TM
278757, Revision 13.2
Cortina Systems®IXF1104 4-Port Gigabit
Ethernet Media Access Controller
Datasheet
The Cortina Systems® IXF1104 4-Port Gigabit Ethernet Media Access Controller (IXF1104 MAC) supports
IEEE 802.3* 10/100/1000 Mbps applications. The IXF1104 MAC supports a System Packet Interface
Phase 3 (SPI3) system interface to a network processor or ASIC, and concurrently supports copper and
fiber physical layer devices (PHYs).
The copper PHY interface supports the standard and reduced pin-count Gigabit Media Independent
Interface (GMII and RGMII) for high-port-count applications. For fiber applications the integrated Serializer/
Deserializer (SerDes) on each port supports direct connection to optical modules to reduce PCB area
requirements and system cost.
Product Features
Applications
Four Independent Ethernet MAC Ports for Copper or
Fiber Physical layer connectivity.
— IEEE 802.3 compliant
— Independent Enable/Disable of any port
Copper Mode:
— RGMII for 10/100/1000 Mbps links
— GMII for 1000 Mbps full-duplex links
— IEEE 802.3 MDIO interface
Fiber Mode:
— Integrated SerDes interface for direct
connection to 1000BASE-X optical modules
— IEEE 802.3 auto-negotiation or forced mode
— Supports SFP MSA-compatible transceivers
SPI3 interface supports data transfers up to 4 Gbps in
both modes:
— 32-bit Multi-PHY mode (133 MHz)
— 4 x 8-bit Single-PHY mode (125 MHz)
IEEE 802.3-compliant Flow Control
— Loss-less up to 9.6 KB packets and 5 km links
— Jumbo frame support for 9.6 KB packets
Internal per-channel FIFOs: 32 KB Rx, 10 KB Tx
Flexible 32/16/8-bit CPU interface
Programmable Packet handling
— Filter broadcast, multicast, unicast, VLAN and
errored packets
— Automatically pad undersized Tx packets
— Remove CRC from Rx packets
Performance Monitoring and Diagnostics
— RMON Statistics
— CRC calculation and error detection
— Detection of length error, runt, or overly large
packets
— Counters for dropped and errored packets
— Loopback modes
— JTAG boundary scan
.18 m CMOS process technology
— 1.8 V core, 2.5 V RGMII, GMII, OMI, and 3.3 V
SPI3 and CPU
Operating Temperature Ranges:
— Copper Mode: -40 °C to +85 °C
— Fiber Mode: 0 °C to +70 °C
Package Options:
— 552-ball Plastic FC-BGA (Leaded)
— 552-ball Plastic FC-BGA (RoHS)
— 552-ball Ceramic BGA (contact your Cortina
Sales Representative)
Load Balancing Systems
MultiService Switches
Web Caching Appliances
Intelligent Backplane Interfaces
Edge Routers
Redundant Line Cards
Base Station Controllers and Transceivers
Serving GPRS Support Nodes (SGSN)
Gateway GPRS Support Nodes (GGSN)
Packet Data Serving Nodes (PDSN)
DSL Access Multiplexers (DSLAM)
Cable Modem Termination Systems (CMTS)
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
Legal Disclaimers
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH CORTINA SYSTEMS®PRODUCTS.
NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS
GRANTED BY THIS DOCUMENT.
EXCEPT AS PROVIDED IN CORTINA’S TERMS AND CONDITIONS OF SALE OF SUCH PRODUCTS, CORTINA ASSUMES NO
LIABILITY WHATSOEVER, AND CORTINA DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY RELATING TO THE SALE
AND/OR USE OF CORTINA PRODUCTS, INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A
PARTICULAR PURPOSE, MERCHANTABILITY OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER
INTELLECTUAL PROPERTY RIGHT.
Cortina products are not intended for use in medical, life saving, life sustaining, critical control or safety systems, or in nuclear facility
applications.
Cortina Systems® and the Cortina Systems logo are the trademarks or registered trademarks of Cortina Systems, Inc. and its
subsidiaries in the U.S. and other countries. Other names and brands may be claimed as the property of others.
Copyright © 2002 − 2008 Cortina Systems, Inc. All rights reserved.
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Page 3Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
Revision History
Revision 13.2
Revision Date: 17 September 2008
• Updated Figure 39, 1000BASE-T Receive Interface Timing, on page 137.
• Updated the Tcdwd and Tcdrh parameter values in Table 53, CPU Interface AC Signal Parameters, on page 143.
• Updated the Tdatd, Tlath and Tlatl parameter values in Table 57, LED Interface AC Timing Parameters, on page 147.
• Replaced the FC-PBGA package drawings in Section 9.3.2, Plastic Ball Grid Array Package Diagram, on page 216.
• Replaced occurences of “2.5V LVTTL” with “2.5V CMOS”.
• Removed caution specifying that “IXF1104 MAC input signals are not 5 V tolerant” in Section 7.1, DC Specifications, on
page 128 and added a note stating that “All 3.3V LVTTL input buffers are 5V tolerant, and all 2.5V CMOS input buffers are 3.3V
LVTTL level tolerant.
• Updated signal names shown in Figure 31, Figure 32, Figure 47and Figure 48 to match the signal tables.
Revision 13.1
Revision Date: 01 August 2008
Removed the ordering information from Table 156, Package Description, on page 213. This information is now available from
www.cortina-systems.com.
Revision 13.0
Revision Date: 30 June 2008
Updated Section 9.0, Mechanical Specifications, on page 213 to reflect the change to the Flip Chip-Plastic Ball Grid Array
(FC-PBGA) package. This chapter includes new package dimensions, part numbers and diagrams.
Revision 12.2
Revision Date: 12 May 2008
• Updated document with the new corporate logo and template.
• Updated Figure 6, Analog Power Supply Filter Network, on page 63.
• Updated Figure 12, MPHY Receive Logical Timing, on page 82.
• Updated Table 40, DC Specifications, on page 128.
• Updated Figure 39, 1000BASE-T Receive Interface Timing, on page 137.
• Updated the RxRuntErrors counter description. See page 169.
Revision 12.1
Revision Date: 14 September 2007
Removed the marking and ordering information. This information is now available from www.cortina-systems.com.
Revision 12.0
Revision Date: 20 July 2007
• DC coupling is not supported and references were removed.
Revision Number: 11.0
Revision Date: 24 April 2007
Page # Description
N/A
• Updated the CBGA package side-view drawing (Figure 55, CBGA Package Side View Diagram).
• Added the FCPBGA package side-view drawing (Figure 57, FC-PBGA Package Diagram (Top and Side
View), on page 216).
• Updated Electrical specs. on UPX_ADD, UPX_BADD, UPX_DATA, UPX_CS_L, UPX_WR_L, UPX_RD_L,
UPX_RDY_L, UPX_WIDTH, TCLK, SYS_RES_L, and CLK123 (Table 7 on page 51, Table 12 on page 55,
and Table 13 on page 55).
• Updated the description of the MDIO Soft Reset Register (0x506) to include a definition of a “reset” (Table
106, MDIO Soft Reset ($0x506), on page 182).
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IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
Revision Number: 10.0
Revision Date: 28 November 2006
Page # Description
N/A First release of this document from Cortina Systems, Inc.
Revision Number: 009
Revision Date: 27-Oct-2005
Page # Description
page 69 Modified Figure 8, Ethernet Frame Format [changed Preamble byte count to 7 bytes].
page 130 Table 44, RGMII Power [changed VCC to VDD in IIH and IIL]
page 105 Added bullet to Section 5.7.3, I²C Module Configuration Interface: The I2C interface only supports random
single-byte reads and does not guarantee coherency when reading two-byte registers.
page 216 Replaced Figure 57, FC-PBGA Package Diagram (Top and Side View), on page 216.
page 205 Modified Table 146, SPI3 Receive Configuration ($0x701).
page 211 Modified Table 153, Optical Module Control Ports 0 - 3 ($0x79A): changed default values.
page 212 Modified Table 154, I2C Control Ports 0 - 3 ($0x79B).
page 227 Modified Table 213, I2C Data Ports 0 - 9 ($0x79F) (changed address from $0x79C to $0x79F).
N/A Added 552-ball Flip Chip-PBGA (FC-PBGA) and Product Ordering Number information.
Revision Number: 008
Revision Date: August 1, 2005 (Sheet 1 of 2)
Page # Description
N/A Added 552-ball Ceramic Ball Grid Array (CBGA) compliant with RoHS and Product Ordering Number
information.
N/A Added 552-ball Flip Chip-PBGA (FC-PBGA) and Product Ordering Number information.
page 55 Modified Table 12, JTAG Interface Signal Descriptions: changed Standard to 3.3 V LVTTL from 2.5 V CMOS.
page 69 Modified Figure 9, PAUSE Frame Format [changed Preamble byte count to 7 bytes].
page 82 Modified Figure 11, MPHY Transmit Logical Timing [updated TDAT[31:0]].
page 82 Modified Figure 12, MPHY Receive Logical Timing [updated RDAT[31:0]].
page 85 Modified Figure 14, SPHY Transmit Logical Timing [updated TDAT[7:0]].
page 85 Modified Figure 15, SPHY Receive Logical Timing [updated RDAT[7:0] and RPRTY].
page 116 Modified Figure 31, Read Timing Diagram - Asynchronous Interface: changed uPx_ADD[12:0] to
uPx_ADD[10:0].
page 119 Added paragraphs two and three under Section 5.11, Loopback Modes.
page 122 Changed 3.3 V CMOS to 2.5 V CMOS under Section 5.12.5, JTAG Clock, on page 122.
page 125 Added Section 6.2, Disable and Enable Port Sequences.
page 130 Modified Table 44, RGMII Power [changed VOH, VOL, VIH, VIL minimum conditions to VDD and changed VIN
value to VDD + .3].
page 131 Modified Table 45, SPI3 Receive Interface Signal Parameters [changed RFCLK duty cycle to 45 min and 55
max; Changed Min for RFCLK frequency to 90].
page 134 Modified Table 46, SPI3 Transmit Interface Signal Parameters [changed TFCLK duty cycle to 45 min and 55
max].
page 140 Changed MDC to MDIO Output delay max for t3 for 2.5 MHz from 200 to 300 in Table 51, MDIO Timing
Parameters, on page 140.
page 162 Modified Table 88, TX Config Word ($ Port_Index + 0x17) [changed default value for the register from
“0x0001A0” to “0x000001A0” and changed default value for bit 6 (Half Duplex) from 1 to 0].
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Datasheet
278757, Revision 13.2
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page 173 Modified Table 94, PHY Control ($ Port Index + 0x60) [added “Need one-sentence descriptions of register” and
register default value].
page 174 Modified Table 95, PHY Status ($ Port Index + 0x61) [added “Need one-sentence descriptions of register” and
register default value].
page 175 Modified Table 96, PHY Identification 1 ($ Port Index + 0x62) [added “Need one-sentence descriptions of
register” and register default value].
page 175 Modified Table 97, PHY Identification 2 ($ Port Index + 0x63) [added “Need one-sentence descriptions of
register” and register default value].
page 176 Modified Table 98, Auto-Negotiation Advertisement ($ Port Index + 0x64) [added “Need one-sentence
descriptions of register” and register default value].
page 177 Modified Table 99, Auto-Negotiation Link Partner Base Page Ability ($ Port Index + 0x65) [added “Need one-
sentence descriptions of register” and register default value].
page 178 Modified Table 100, Auto-Negotiation Expansion ($ Port Index + 0x66) [added “Need one-sentence descriptions
of register” and register default value].
page 179 Modified Table 101, Auto-Negotiation Next Page Transmit ($ Port Index + 0x67) [added “Need one-sentence
descriptions of register” and register default value].
page 202 Modified Table 142, MDIO Single Read and Write Data ($0x681) [changed MDIO write data to “MDIO write data
to external device”].
page 203 Modified Table 145, SPI3 Transmit and Global Configuration ($0x700) [changed default value for bits 3:0 from
“0” to “1” and changed default value for entire register from “0x0020000F” to “0x00200000”].
page 205 Modified Table 146, SPI3 Receive Configuration ($0x701) [changed default value for bits 11:8 from “0xF” to
“0x1”].
page 211 Modified Table 153, Optical Module Control Ports 0 - 3 ($0x79A) [changed default value for bits 16:13 from
“0xF” to “0x1”].
page 216 Added Figure 57, FC-PBGA Package Diagram (Top and Side View), on page 216.
229 Added Section 9.4, “RoHS Compliance” on page 229.
Revision Number: 007
Revision Date: March 24, 2004
(Sheet 1 of 5)
Page # Description
All Globally replaced GBIC with Optical Module Interface.
All Globally edited signal names.
All
Globally changed SerDes and PLL analog power ball names as follows:
TXAVTT and RXAVTT changed to AVDD1P8_2
TXAV25 and RXAV25 changed to AVDD2P5_2
PLL1_VDDA and PLL2_VDDA changed to AVDD1P8_1
PLL3_VDDA changed to AVDD2P5_1
PLL1_GNDA, PLL2_GNDA, and PLL3_GNDA changed to GND
1Reworded and rearranged the Product Features section on page one
Changed Jumbo frame support from “10 kbytes” to “9.6 KB”.
21 Changed heading to Section 2.0, “General Description” [was Section 2.0, “Block Diagram”].
23/37
Reversed sections as follows:
Section 3.0, “Ball Assignments and Ball List Tables”
Section 4.0, “Ball Assignments and Signal Descriptions”
Revision Number: 008
Revision Date: August 1, 2005 (Sheet 2 of 2)
Page # Description
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24
Modified Table 1 “Ball List in Alphanumeric Order by Signal Name”:
Changed A10 from VCC to VDD
Changed C12 from VCC to VDD
Changed D11 from VCC to VDD
Changed J20 from GND to VDD
Changed Ball A1 from NC to No Pad.
Changed Balls A2, A3, A22, A23, A24, B1, B2, B23, B24, C1, C24, AB1, AB24, AC1, AC2, AC23, AC24, AD1,
AD2, AD3, AD22, AD23, AD24 from NC to No Ball.
30
Modified Table 2 “Ball List in Alphanumeric Order by Ball Location”
Changed A10 from VCC to VDD
Changed C12 form VCC to VDD
Changed D11 from VCC to VDD
Changed J20 from GND to VDD
Changed Ball A1 from NC to No Pad.
Changed Balls A2, A3, A22, A23, A24, B1, B2, B23, B24, C1, C24, AB1, AB24, AC1, AC2, AC23, AC24, AD1,
AD2, AD3, AD22, AD23, AD24 from NC to No Ball.
38 Updated Figure 4 “Interface Signals” [modified SPI3 interface signals and added MPHY and SPHY categories;
modified signal names].
39
Broke old Table 1, “IXF1104 Signal Descriptions” into the following:
Table 3 “SPI3 Interface Signal Descriptions” on page 39 through Table 14 “Power Supply Signal Descriptions”
on page 56
39 Modified Table 3 “SPI3 Interface Signal Descriptions” on page 39 [edited description for DTPA; added text to
TFCLK description; added text to RFCLK description].
50 Modified Table 6 “RGMII Interface Signal Descriptions” [Added Ball Designators; added notes under
descriptions].
51 Modified Table 7 “CPU Interface Signal Descriptions” [UPX_DATA[16]: deleted J10, added M10].
53 Modified Table 9 “Optical Module Interface Signal Descriptions” [added Ball Designators].
54 Modified Table 10 “MDIO Interface Signal Descriptions” [moved note from MDC to MDIO].
56 Modified Table 14 “Power Supply Signal Descriptions” [added Ball Designators A4, A21, and AD21 to GND;
added AVDD1P8_1, AVDD1P8_2, AVDD2P5_1, and AVDD2P5_2].
39
Modified Section 4.3, “Signal Description Tables” [changed heading from “Signal Naming Conventions; added
new headings Section 4.1.1, “Signal Name Conventions” and Section 4.1.2, “Register Address Conventions”;
and added/enhanced material under headings.
58 Added new Section 4.5, “Multiplexed Ball Connections” with Table 16 “Line Side Interface Multiplexed Balls”
and Table 17 “SPI3 MPHY/SPHY Interface”.
63 Modified Section 4.7, “Power Supply Sequencing” [changed language under this section and added Section
4.7.1, “Power-Up Sequence” and Section 4.7.2, “Power-Down Sequence”].
63 Modified Table 5 “Power Supply Sequencing” [deleted 3.3 V Supplies Stable; changed Apply 1.8 V to VDD,
AVDD1P8_1, and AVDD1P8_2; changed Apply 2.5 V to AVDD2P5_1 and AVDD2P5_2].
61 Modified Table 18 “Definition of Output and Bi-directional Balls During Hardware Reset” [changed comments for
Optical Modules].
64 Modified Table 20 “Pull-Up/Pull-Down and Unused Ball Guidelines” [changed TRST_L to pull-down; added
MDIO, UPX_RDY_L, I2C_DATA_3:0, and TX_DISABLE_3:0].
64 Added new Section 4.9, “Analog Power Filtering” [including Figure 6 “Analog Power Supply Filter Network” on
page 65 and Table 21 “Analog Power Balls” on page 65].
66 Modified/edited text under Section 5.1, “Media Access Controller (MAC)” [rearranged and created new bullets].
67 Modified first paragraph under Section 5.1.1.1, “Padding of Undersized Frames on Transmit”.
67 Modified entire Section 5.1.1.3, “Filtering of Receive Packets”.
68 Added new Section 5.1.1.3.6, “Filter CRC Error Packets”.
Revision Number: 007
Revision Date: March 24, 2004
(Sheet 2 of 5)
Page # Description
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17 September 2008
69 Added note under Table 22 “CRC Errored Packets Drop Enable Behavior”.
69 Added new Section 5.1.2, “Flow Control” including Figure 7 “Packet Buffering FIFO”, Figure 8 “Ethernet Frame
Format”, and Figure 9 “PAUSE Frame Format”.
73 Replaced Section 5.1.2.1.5, “Transmit Pause Control Interface” [added Table 23 “Valid Decodes for
TXPAUSEADD[2:0]” and modified Table 10 “Transmit Pause Control Interface”.
74 Modified Figure 10 “Transmit Pause Control Interface”
75 Added note under Section 5.1.3.1, “Configuration”.
76 Added table note to Table 24 “Operational Mode Configuration Registers”.
77 Added note under Section 5.1.4.3, “Fiber Forced Mode”.
79 Modified Section 5.1.6.2, “TX Statistics” [added text to third sentence in first paragraph].
79 Modified Section 5.1.6.3, “Loss-less Flow Control” [changed “two kilometers” to “five kilometers” in last
sentence.
80 Modified Section 5.1.7.1.2, “RX FIFO” [changed 10 KB to 9.6 KB; added text to last paragraph].
83 Rewrote/replaced Section 5.2, “SPI3 Interface”.
86 Edited signal names in Figure 13 “MPHY 32-Bit Interface”.
90 Edited signal names in Figure 16 “SPHY Connection for Two IXF1104 MAC Ports (8-Bit Interface)”.
91 Added new Section 5.2.2.9, “SPI3 Flow Control”.
[Removed old “Packet-Level and Byte-Level Transfers” section.}
94 Modified Figure 17 “MAC GMII Interconnect” [edited signal names].
NA Removed old Section 5.3.3 Electrical Requirements and Table 27 “Electrical Requirements” – changed Input
high current Max from 40 to 15 and Input low current Min from -600 to -15.
96 Added a note under Section 5.4, “Reduced Gigabit Media Independent Interface (RGMII)”.
96 Modified Figure 18 “RGMII Interface” [edited signal names].
98 Modified Figure 19 “TX_CTL Behavior” [changed signal names].
98 Modified Figure 20 “RX_CTL Behavior” [changed signal names].
99 Modified Section 5.5, “MDIO Control and Interface” [changed 3.3 us to 3.3 ms in fourth paragraph, third
sentence].
103 Modified/replaced all text under Section 5.6, “SerDes Interface” on page 103 [added Table 29 “SerDes Driver
TX Power Levels”].
NA Removed old Section 5.6.2.4 AC/DC Coupling.
NA Removed old Section 5.6.2.9 System Jitter.
107 Modified Table 30 “IXF1104 MAC-to-SFP Optical Module Interface Connections” [edited signal names].
107 Modified/replaced text and deleted old “Figure 19. Typical GBIC Module Functional Diagram” under Section 5.7,
“Optical Module Interface”].
108 Modified second sentence under Section 5.7.2.2.1, “MOD_DEF_0:3”.
109 Modified second sentence under Section 5.7.2.2.3, “RX_LOS_0:3”.
109 Removed third paragraph under Section 5.7.2.2.7, “RX_LOS_INT”.
110 Modified first and second paragraphs under Section 5.7.3, “I²C Module Configuration Interface”.
111 Modified Section 5.7.3.3, “I2C Write Operation” [edited portions of text].
116 Modified Table 31 “LED Interface Signal Descriptions” [changed 0.5 MHz to 720 Hz for LED_CLK under Signal
Description].
119 Modified Table 35 “LED Behavior (Fiber Mode)” [changed links under Description to “Link LED Enable
($0x502)”].
NA Removed old Figure 30 “CPU – External and Internal Connections”.
Revision Number: 007
Revision Date: March 24, 2004
(Sheet 3 of 5)
Page # Description
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278757, Revision 13.2
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123 Modified Table 37 “Byte Swapper Behavior” [edited/added new values].
123 Modified second paragraph under Section 5.10, “TAP Interface (JTAG)”
126 Modified Figure 33 “SPI3 Interface Loopback Path”.
126 Added note under Section 5.11.2, “Line Side Interface Loopback”.
127 Modified Figure 34 “Line Side Interface Loopback Path”.
127 Changed Section 5.12, “Clocks” [from GBIC output clock to I2C Clock].
129 Changed Section 5.12.6, “I2C Clock” [from GBIC Clock to I2C Clock].
130 Added new Section 6.0, “Applications”.
132 Modified Table 39 “Absolute Maximum Ratings” [changed SerDes analog power to AVDD1P8_2 and
AVDD2P5_2; changed “PLL1_VDDA and PLL2_VDDA to AVDD1P8_1; changed PLL3_VDDA to AVDD2P5_1.
133 Modified Table 40 “Recommended Operating Conditions” [changed SerDes analog power to AVDD1P8_2 and
AVDD2P5_2; changed “PLL1_VDDA and PLL2_VDDA to AVDD1P8_1; changed PLL3_VDDA to AVDD2P5_1.
134 Modified Table 42 “SerDes Transmit Characteristics” [included SerDes power driver level information].
142 Modified Table 49 “GMII 1000BASE-T Transmit Signal Parameters” (changed Min values for t1 and t2.
143 Modified Table 50 “GMII 1000BASE-T Receive Signal Parameters” (changed Min values for t1 and t2.
146 Replaced old MDIO Timing diagram and table with Figure 43 “MDIO Write Timing Diagram”, Figure 44 “MDIO
Read Timing Diagram”, and Table 52 “MDIO Timing Parameters”.
156
Broke up the old Register Map into Table 59 “MAC Control Registers ($ Port Index + Offset)”, Table 60 “MAC
RX Statistics Registers ($ Port Index + Offset)”, Table 61 “MAC TX Statistics Registers ($ Port Index + Offset)”,
Table 62 “PHY Autoscan Registers ($ Port Index + Offset)”, Table 63 “Global Status and Configuration Registers
($ 0x500 - 0X50C)”, Table 64 “RX FIFO Registers ($ 0x580 - 0x5BF)”, Table 65 “TX FIFO Registers ($ 0x600 -
0x63E)”, Table 66 “MDIO Registers ($ 0x680 - 0x683)”, Table 67 “SPI3 Registers ($ 0x700 - 0x716)”, Table 68
“SerDes Registers ($ 0x780 - 0x798)”, and Table 69 “Optical Module Registers ($ 0x799 - 0x79F)”.
159 Edited Table 63 “Global Status and Configuration Registers ($ 0x500 - 0X50C)” [no offset].
159 Edited Table 64 “RX FIFO Registers ($ 0x580 - 0x5BF)” [no offset].
160 Edited Table 65 “TX FIFO Registers ($ 0x600 - 0x63E)” [no offset].
161 Edited Table 66 “MDIO Registers ($ 0x680 - 0x683)” [no offset].
161 Edited Table 67 “SPI3 Registers ($ 0x700 - 0x716)” [no offset].
162 Edited Table 68 “SerDes Registers ($ 0x780 - 0x798)” [no offset].
162 Edited Table 69 “Optical Module Registers ($ 0x799 - 0x79F)” [no offset].
163 Modified Table 71 “Desired Duplex ($ Port_Index + 0x02)” [changed 100 Mbps to 1000 Mbps in register
description.
167 Modified Table 82 “MAC IF Mode and RGMII Speed ($ Port_Index + 0x10)” [Added text to register description.]
168 Modified Table 84 “FC Enable ($ Port_Index + 0x12)” [changed description for bits 1:0].
169 Modified Table 88 “RX Config Word ($ Port_Index + 0x16)” [edited Register Description text; changed
description and type for bits 13:12].
170 Modified Table 89 “TX Config Word ($ Port_Index + 0x17)” [edited description and type for bits 14, 13:12.
171 Modified Table 90 “Diverse Config Write ($ Port_Index + 0x18)” [edited description and type for bits 18:8;
changed bits 3:1 to Reserved; added table note 2].
172 Renamed/modified Table 91 “RX Packet Filter Control ($ Port_Index + 0x19)” [old register name - added RX to
heading; added table note 2].
174 Modified Table 93 “MAC RX Statistics ($ Port_Index + 0x20 – + 0x39)” [added note to
RxPauseMacControlReceivedCounter description; edited note 3 and added note 4].
178 Modified Table 94 “MAC TX Statistics ($ Port_Index +0x40 – +0x58)” [changed “1526-max” to “1523 - max
frame size” for Txpkts1519toMaxOctets description].
Revision Number: 007
Revision Date: March 24, 2004
(Sheet 4 of 5)
Page # Description
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193
Modified Table 113 “RX FIFO High Watermark Port 0 ($0x580)”, Table 114 “RX FIFO High Watermark Port 1
($0x581)”, Table 115 “RX FIFO High Watermark Port 2 ($0x582)”, and Table 116 “RX FIFO High Watermark
Port 3 ($0x583)” [changed bits 11:0 description].
195
Renamed and modified Table 121 “RX FIFO Overflow Frame Drop Counter Ports 0 - 3 ($0x594 – 0x597)”
[old register name: RX FIFO Number of Frames Removed Ports 0 to 3; renamed bit names to match register
names; removed “This register gets updated after one cycle of sw reset is applied” under Description].
196 Modified Table 123 “RX FIFO Errored Frame Drop Enable ($0x59F)” [renamed bit names to match register
name].
198
Renamed/modified Table 125 “RX FIFO Errored Frame Drop Counter Ports 0 - 3 ($0x5A2 - 0x5A5)” on
page 198 [older register name: RX FIFO Dropped Packet Counter for Ports 0 to 3; renamed bit names to match
register name].
199 Modified Table 126 “RX FIFO SPI3 Loopback Enable for Ports 0 - 3 ($0x5B2)” [renamed heading and bit name;
changed description and type for bits 7:0].
201 Renamed Table 128 “RX FIFO Transfer Threshold Port 0 ($0x5B8)” on page 201 [from “RX FIFO Jumbo Packet
Size; changed bit names and edited/added text under description].
207 Modified Table 136 “Loop RX Data to TX FIFO (Line-Side Loopback) Ports 0 - 3 ($0x61F)” [renamed heading
and bit name].
208 Modified Table 138 “TX FIFO Overflow Frame Drop Counter Ports 0 - 3 ($0x621 – 0x624)” [renamed from TX
FIFO Number of Frames Removed Ports 3 - 0].
209 Modified Table 139 “TX FIFO Errored Frame Drop Counter Ports 0 - 3 ($0x625 – 0x629)” [renamed from TX
FIFO Number of Dropped Packets Ports 0-3 and text under the description].
210 Modified Table 141 “TX FIFO Port Drop Enable ($0x63D)” [changed description for bits 3:0].
211 Modified Table 142 “MDIO Single Command ($0x680)” [changed default; changed description and default for
bits 9:8; changed default for bits 4:0].
212 Modified Table 144 “Autoscan PHY Address Enable ($0x682)” [added note to register description].
213 Modified Table 146 “SPI3 Transmit and Global Configuration ($0x700)” [broke out bits 19:16, 7:4, and 3:0 and
changed description text].
215 Modified Table 147 “SPI3 Receive Configuration ($0x701)” [broke out bits and modified all text adding SPHY
and MPHY modes].
221 Modified Table 152 “Clock and Interface Mode Change Enable Ports 0 - 3 ($0x794)” [deleted second paragraph
of the Register Description; renamed bits to match caption; changed text under Description].
222 Added note under Section 8.4.11, “Optical Module Register Overview”.
222 Modified Table 153 “Optical Module Status Ports 0-3 ($0x799)” [edited register description].
222 Modified Table 154 “Optical Module Control Ports 0 - 3 ($0x79A)” [changed register description].
NA Removed/Reserved Table 190 “TX and RX AC/DC Coupling Selection ($7x780)”.
NA Deleted old Figure 19, “Typical GBIC Module Functional Diagram” under Section 5.7, “Optical Module
Interface”.
NA Removed old Section 5.1.1.5, “Pause Command Frames.”
180(old) Removed old Table 13. TX FIFO Mini Frame Size for MAC and Padding Enable Port 0 to 3 Register (Addr:
0x63E) and replaced with Reserved.
Revision Number: 006
Revision Date: August 21, 2003
(Sheet 1 of 2)
Page # Description
19 Modified Table 1 “IXF1104 Signal Descriptions”
53 Modified Section 5.1.1.1, “Padding of Undersized Frames on Transmit”.
60 Modified text for etherStatsCollision in Table 9 “RMON Additional Statistics”.
Revision Number: 007
Revision Date: March 24, 2004
(Sheet 5 of 5)
Page # Description
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87 Modified Table 17 “IXF1104-to-Optical Module Interface Connections”
65 Modified first paragraph under Section 5.3.1.2, “Clock Rates”.
87 Modified Section 5.8.2.1, “High-Speed Serial Interface”.
100 Modified Figure 27 “Microprocessor — External and Internal Connections”.
110 Changed PECL to LVDS under Section 6.1, “DC Specifications”.
113 Modified table note 4 in Table 32 “SPI3 Receive Interface Signal Parameters”.
119 Modified Table 37 “SerDes Timing Parameters”.
125 Modified Table 40 “Microprocessor Interface Write Cycle AC Signal Parameters”.
140 Modified Table 53 “IPG Receive and Transmit Time Register (Addr: Port_Index + 0x0A – + 0x0C)”.
143 Modified Table 60 “Short Runts Threshold Register (Addr: Port_Index + 0x14)”.
143 Modified Table 61 “Discard Unknown Control Frame Register (Addr: Port_Index + 0x15)”.
143 Modified Table 62 “RX Config Word Register Bit Definition (Addr: Port_Index + 0x16)”.
145 Modified Table 64 “DiverseConfigWrite Register (Addr: Port_Index + 0x18)”.
148 Modified Table 67 “RX Statistics Registers (Addr: Port_Index + 0x20 – + 0x39)”.
163 Modified Table 82 “Microprocessor Interface Register (Addr: 0x508)”.
164 Modified Table 84 “LED Flash Rate Register (Addr: 0x50A)”.
169 Modified Table 93 “RX FIFO Errored Frame Drop Enable Register (Addr: 0x59F)”.
170 Modified Table 96 “RX FIFO Loopback Enable for Ports 0 - 3 Register (Addr: 0x5B2)”.
171 Added Table 98 “RX FIFO Jumbo Packet Size 0-3 Register (Addr: 0x5B8 – 0x5BB”.
172 Added Table 99 “RX FIFO Jumbo Packet Size Port 0 Register Bit Definitions (Addr: 0x5B8)”.
172 Added Table 100 “RX FIFO Jumbo Packet Size Port 1 Register Bit Definitions (Addr: 0x5B9)”.
172 Added Table 101 “RX FIFO Jumbo Packet Size Port 2 Register Bit Definitions (Addr: 0x5BA)”.
172 Added Table 102 “RX FIFO Jumbo Packet Size Port 3 Register Bit Definitions (Addr: 0x5BB)”.
178 Modified Table 110 “TX FIFO Number of Dropped Packets Register Ports 0-3 (Addr: 0x625 – 0x629)”.
177 Modified Table 108 “TX FIFO Port Reset Register (Addr: 0x620)”.
177 Modified Table 108 “TX FIFO Port Reset Register (Addr: 0x620)”.
177 Modified Table 107 “Loop RX Data to TX FIFO Register Ports 0 - 3 (Addr: 0x61F)”.
179 Added Table 111 “TX FIFO Occupancy Counter for Ports 0 - 3 Registers (Addr: 0x62D – 0x630)”.
180 Added Table 112 “TX FIFO Port Drop Enable Register (Addr: 0x63D)”.
181 Modified Table 114 “MDI Single Command Register (Addr: 0x680)”.
186 Added Table 122 “Tx and Rx Power-Down Register (Addr: 0x787)”.
194 Replaced Figure 53 “IXF1104 Example Package Marking”.
Revision 005
Revision Date: April 30, 2003
Page # Description
Initial external release.
Revision Number: 006
Revision Date: August 21, 2003
(Sheet 2 of 2)
Page # Description
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Revisions 001 through 004
Revision Date: April 2001 – December 2002
Page # Description
Internal releases.
Page 12Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Contents
1.0 Introduction.................................................................................................................................. 21
1.1 What You Will Find in This Document ................................................................................ 21
1.2 Related Documents ............................................................................................................21
2.0 General Description .................................................................................................................... 22
3.0 Ball Assignments and Ball List Tables ...................................................................................... 24
3.1 Ball Assignments ................................................................................................................ 24
3.2 Ball List Tables ................................................................................................................... 25
3.2.1 Balls Listed in Alphabetic Order by Signal Name .................................................. 25
3.2.2 Balls Listed in Alphabetic Order by Ball Location .................................................. 30
4.0 Ball Assignments and Signal Descriptions .............................................................................. 36
4.1 Naming Conventions ..........................................................................................................36
4.1.1 Signal Name Conventions ..................................................................................... 36
4.1.2 Register Address Conventions .............................................................................. 36
4.2 Interface Signal Groups ......................................................................................................36
4.3 Signal Description Tables ................................................................................................... 37
4.4 Multiplexed Ball Connections.............................................................................................. 56
4.4.1 GMII/RGMII/SerDes/OMI Multiplexed Ball Connections........................................ 56
4.4.2 SPI3 MPHY/SPHY Ball Connections..................................................................... 57
4.5 Ball State During Reset ......................................................................................................60
4.6 Power Supply Sequencing.................................................................................................. 61
4.6.1 Power-Up Sequence.............................................................................................. 61
4.6.2 Power-Down Sequence ......................................................................................... 61
4.7 Pull-Up/Pull-Down Ball Guidelines...................................................................................... 62
4.8 Analog Power Filtering........................................................................................................ 62
5.0 Functional Descriptions.............................................................................................................. 64
5.1 Media Access Controller (MAC) ......................................................................................... 64
5.1.1 Features for Fiber and Copper Mode .................................................................... 65
5.1.2 Flow Control........................................................................................................... 67
5.1.3 Mixed-Mode Operation .......................................................................................... 71
5.1.4 Fiber Mode............................................................................................................. 73
5.1.5 Copper Mode ......................................................................................................... 74
5.1.6 Jumbo Packet Support .......................................................................................... 75
5.1.7 Packet Buffer Dimensions ..................................................................................... 76
5.1.8 RMON Statistics Support....................................................................................... 77
5.2 SPI3 Interface ..................................................................................................................... 80
5.2.1 MPHY Operation.................................................................................................... 80
5.2.2 MPHY Logical Timing ............................................................................................ 81
5.2.3 Pre-Pending Function ............................................................................................ 88
5.3 Gigabit Media Independent Interface (GMII) ...................................................................... 89
5.3.1 GMII Signal Multiplexing ........................................................................................ 90
5.3.2 GMII Interface Signal Definition ............................................................................. 90
5.4 Reduced Gigabit Media Independent Interface (RGMII) .................................................... 92
5.4.1 Multiplexing of Data and Control............................................................................ 92
5.4.2 Timing Specifics..................................................................................................... 92
5.4.3 TX_ER and RX_ER Coding................................................................................... 93
5.4.4 10/100 Mbps Functionality..................................................................................... 95
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5.5 MDIO Control and Interface................................................................................................ 95
5.5.1 MDIO Address ....................................................................................................... 96
5.5.2 MDIO Register Descriptions .................................................................................. 96
5.5.3 Clear When Done .................................................................................................. 96
5.5.4 MDC Generation.................................................................................................... 96
5.5.5 Management Frames............................................................................................. 96
5.5.6 Single MDI Command Operation........................................................................... 97
5.5.7 MDI State Machine ................................................................................................ 97
5.5.8 Autoscan Operation ............................................................................................... 99
5.6 SerDes Interface................................................................................................................. 99
5.6.1 Features................................................................................................................. 99
5.6.2 Functional Description ........................................................................................... 99
5.7 Optical Module Interface................................................................................................... 103
5.7.1 IXF1104 MAC-Supported Optical Module Interface Signals................................ 103
5.7.2 Functional Descriptions ....................................................................................... 104
5.7.3 I²C Module Configuration Interface...................................................................... 105
5.8 LED Interface.................................................................................................................... 110
5.8.1 Modes of Operation ............................................................................................. 110
5.8.2 LED Interface Signal Description......................................................................... 111
5.8.3 Mode 0: Detailed Operation................................................................................. 111
5.8.4 Mode 1: Detailed Operation................................................................................. 112
5.8.5 Power-On, Reset, Initialization ............................................................................ 113
5.8.6 LED DATA Decodes ............................................................................................ 113
5.9 CPU Interface ................................................................................................................... 115
5.9.1 Functional Description ......................................................................................... 116
5.9.2 Endian.................................................................................................................. 117
5.10 TAP Interface (JTAG) ....................................................................................................... 118
5.10.1 TAP State Machine.............................................................................................. 118
5.10.2 Instruction Register and Supported Instructions.................................................. 119
5.10.3 ID Register........................................................................................................... 119
5.10.4 Boundary Scan Register...................................................................................... 119
5.10.5 Bypass Register................................................................................................... 119
5.11 Loopback Modes ..............................................................................................................119
5.11.1 SPI3 Interface Loopback ..................................................................................... 120
5.11.2 Line Side Interface Loopback .............................................................................. 120
5.12 Clocks ............................................................................................................................... 121
5.12.1 System Interface Reference Clocks .................................................................... 121
5.12.2 SPI3 Receive and Transmit Clocks ..................................................................... 122
5.12.3 RGMII Clocks....................................................................................................... 122
5.12.4 MDC Clock........................................................................................................... 122
5.12.5 JTAG Clock.......................................................................................................... 122
5.12.6 I2C Clock.............................................................................................................. 123
5.12.7 LED Clock............................................................................................................ 123
6.0 Applications ............................................................................................................................... 124
6.1 Change Port Mode Initialization Sequence....................................................................... 124
6.2 Disable and Enable Port Sequences ................................................................................ 125
6.2.1 Disable Port Sequence ........................................................................................ 125
6.2.2 Enable Port Sequence......................................................................................... 125
7.0 Electrical Specifications ........................................................................................................... 126
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7.1 DC Specifications ............................................................................................................. 128
7.1.1 Undershoot / Overshoot Specifications ............................................................... 129
7.1.2 RGMII Electrical Characteristics .......................................................................... 130
7.2 SPI3 AC Timing Specifications ......................................................................................... 130
7.2.1 Receive Interface Timing ..................................................................................... 130
7.2.2 Transmit Interface Timing .................................................................................... 133
7.3 RGMII AC Timing Specification ........................................................................................ 135
7.4 GMII AC Timing Specification........................................................................................... 136
7.4.1 1000 Base-T Operation ....................................................................................... 136
7.5 SerDes AC Timing Specification....................................................................................... 138
7.6 MDIO AC Timing Specification ......................................................................................... 139
7.6.1 MDC High-Speed Operation Timing .................................................................... 139
7.6.2 MDC Low-Speed Operation Timing..................................................................... 139
7.6.3 MDIO AC Timing.................................................................................................. 140
7.7 Optical Module and I2C AC Timing Specification ............................................................. 141
7.7.1 I2C Interface Timing............................................................................................. 141
7.8 CPU AC Timing Specification ........................................................................................... 142
7.8.1 CPU Interface Read Cycle AC Timing................................................................. 142
7.8.2 CPU Interface Write Cycle AC Timing ................................................................. 143
7.9 Transmit Pause Control AC Timing Specification............................................................. 144
7.10 JTAG AC Timing Specification ......................................................................................... 145
7.11 System AC Timing Specification....................................................................................... 146
7.12 LED AC Timing Specification............................................................................................ 147
8.0 Register Set................................................................................................................................ 148
8.1 Document Structure.......................................................................................................... 148
8.2 Graphical Representation ................................................................................................. 148
8.3 Per Port Registers ............................................................................................................ 148
8.4 Register Map .................................................................................................................... 149
8.4.1 MAC Control Registers ........................................................................................ 155
8.4.2 MAC RX Statistics Register Overview ................................................................. 165
8.4.3 MAC TX Statistics Register Overview ................................................................. 170
8.4.4 PHY Autoscan Registers ..................................................................................... 173
8.4.5 Global Status and Configuration Register Overview ........................................... 179
8.4.6 RX FIFO Register Overview ................................................................................ 184
8.4.7 TX FIFO Register Overview................................................................................. 193
8.4.8 MDIO Register Overview ..................................................................................... 201
8.4.9 SPI3 Register Overview....................................................................................... 203
8.4.10 SerDes Register Overview .................................................................................. 208
8.4.11 Optical Module Register Overview ...................................................................... 210
9.0 Mechanical Specifications........................................................................................................ 213
9.1 Overview........................................................................................................................... 213
9.1.1 Features............................................................................................................... 213
9.2 Package Specifics ............................................................................................................213
9.3 Package Information.........................................................................................................213
9.3.1 CBGA Package Diagrams ................................................................................... 214
9.3.2 Plastic Ball Grid Array Package Diagram ............................................................ 216
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List of Figures
1 Block Diagram ............................................................................................................................... 22
2 Internal Architecture ...................................................................................................................... 23
3 552-Ball Assignments (Top View) ................................................................................................. 24
4 Interface Signals ........................................................................................................................... 37
5 Power Supply Sequencing ............................................................................................................ 61
6 Analog Power Supply Filter Network .............................................................................................63
7 Packet Buffering FIFO ................................................................................................................... 68
8 Ethernet Frame Format ................................................................................................................. 69
9 PAUSE Frame Format................................................................................................................... 69
10 Transmit Pause Control Interface.................................................................................................. 71
11 MPHY Transmit Logical Timing ..................................................................................................... 82
12 MPHY Receive Logical Timing ...................................................................................................... 82
13 MPHY 32-Bit Interface................................................................................................................... 83
14 SPHY Transmit Logical Timing...................................................................................................... 85
15 SPHY Receive Logical Timing....................................................................................................... 85
16 SPHY Connection for Two IXF1104 MAC Ports (8-Bit Interface).................................................. 86
17 MAC GMII Interconnect................................................................................................................. 90
18 RGMII Interface ............................................................................................................................. 92
19 TX_CTL Behavior.......................................................................................................................... 94
20 RX_CTL Behavior.......................................................................................................................... 94
21 Management Frame Structure (Single-Frame Format) ................................................................. 97
22 MDI State....................................................................................................................................... 98
23 SerDes Receiver Jitter Tolerance................................................................................................ 102
24 I2C Random Read Transaction ................................................................................................... 107
25 Data Validity Timing..................................................................................................................... 108
26 Start and Stop Definition Timing.................................................................................................. 109
27 Acknowledge Timing ................................................................................................................... 109
28 Random Read ............................................................................................................................. 110
29 Mode 0 Timing............................................................................................................................. 111
30 Mode 1 Timing............................................................................................................................. 113
31 Read Timing Diagram - Asynchronous Interface......................................................................... 116
32 Write Timing Diagram - Asynchronous Interface......................................................................... 117
33 SPI3 Interface Loopback Path..................................................................................................... 120
34 Line Side Interface Loopback Path.............................................................................................. 121
35 SPI3 Receive Interface Timing.................................................................................................... 131
36 SPI3 Transmit Interface Timing ................................................................................................... 133
37 RGMII Interface Timing ............................................................................................................... 135
38 1000BASE-T Transmit Interface Timing...................................................................................... 136
39 1000BASE-T Receive Interface Timing....................................................................................... 137
40 SerDes Timing Diagram .............................................................................................................. 138
41 MDC High-Speed Operation Timing............................................................................................ 139
42 MDC Low-Speed Operation Timing............................................................................................. 139
43 MDIO Write Timing Diagram ....................................................................................................... 140
44 MDIO Read Timing Diagram ....................................................................................................... 140
45 Bus Timing Diagram .................................................................................................................... 141
46 Write Cycle Diagram.................................................................................................................... 141
47 CPU Interface Read Cycle AC Timing......................................................................................... 142
48 CPU Interface Write Cycle AC Timing......................................................................................... 143
49 Pause Control Interface Timing ................................................................................................... 144
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50 JTAG AC Timing.......................................................................................................................... 145
51 System Reset AC Timing ............................................................................................................ 146
52 LED AC Interface Timing............................................................................................................. 147
53 Memory Overview Diagram ......................................................................................................... 148
54 Register Overview Diagram......................................................................................................... 149
55 CBGA Package Diagram (Top and Side View) ........................................................................... 214
56 CBGA Package Diagram (Bottom View) ..................................................................................... 215
57 FC-PBGA Package Diagram (Top and Side View) ..................................................................... 216
58 FC-PBGA Package Diagram (Bottom View) ............................................................................... 217
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List of Tables
1 Ball List in Alphanumeric Order by Signal Name........................................................................... 25
2 Ball List in Alphanumeric Order by Ball Location........................................................................... 30
3 SPI3 Interface Signal Descriptions................................................................................................ 38
4 SerDes Interface Signal Descriptions............................................................................................ 46
5 GMII Interface Signal Descriptions ................................................................................................ 47
6 RGMII Interface Signal Descriptions ............................................................................................. 49
7 CPU Interface Signal Descriptions ................................................................................................ 51
8 Transmit Pause Control Interface Signal Descriptions .................................................................. 52
9 Optical Module Interface Signal Descriptions................................................................................ 53
10 MDIO Interface Signal Descriptions .............................................................................................. 54
11 LED Interface Signal Descriptions................................................................................................. 54
12 JTAG Interface Signal Descriptions............................................................................................... 55
13 System Interface Signal Descriptions............................................................................................ 55
14 Power Supply Signal Descriptions................................................................................................. 55
15 Line Side Interface Multiplexed Balls............................................................................................. 56
16 SPI3 MPHY/SPHY Interface.......................................................................................................... 58
17 Definition of Output and Bi-directional Balls During Hardware Reset............................................ 60
18 Power Supply Sequencing ............................................................................................................ 62
19 Pull-Up/Pull-Down and Unused Ball Guidelines ............................................................................ 62
20 Analog Power Balls ....................................................................................................................... 63
21 CRC Errored Packets Drop Enable Behavior................................................................................ 67
22 Valid Decodes for TXPAUSEADD[2:0].......................................................................................... 71
23 Operational Mode Configuration Registers ................................................................................... 72
24 RMON Additional Statistics ........................................................................................................... 77
25 GMII Interface Signal Definitions ................................................................................................... 91
26 RGMII Signal Definitions ............................................................................................................... 93
27 TX_ER and RX_ER Coding Description........................................................................................ 93
28 SerDes Driver TX Power Levels.................................................................................................. 100
29 IXF1104 MAC-to-SFP Optical Module Interface Connections..................................................... 103
30 LED Interface Signal Descriptions............................................................................................... 111
31 Mode 0 Clock Cycle to Data Bit Relationship .............................................................................. 112
32 Mode 1 Clock Cycle to Data Bit Relationship .............................................................................. 113
33 LED_DATA# Decodes................................................................................................................. 113
34 LED Behavior (Fiber Mode)......................................................................................................... 114
35 LED Behavior (Copper Mode) ..................................................................................................... 115
36 Byte Swapper Behavior ............................................................................................................... 118
37 Instruction Register Description................................................................................................... 119
38 Absolute Maximum Ratings......................................................................................................... 126
39 Recommended Operating Conditions ......................................................................................... 127
40 DC Specifications ........................................................................................................................ 128
41 SerDes Transmit Characteristics................................................................................................. 128
42 SerDes Receive Characteristics.................................................................................................. 129
43 Undershoot / Overshoot Limits .................................................................................................... 129
44 RGMII Power ............................................................................................................................... 130
45 SPI3 Receive Interface Signal Parameters ................................................................................. 131
46 SPI3 Transmit Interface Signal Parameters ................................................................................ 134
47 RGMII Interface Timing Parameters............................................................................................ 135
48 GMII 1000BASE-T Transmit Signal Parameters ......................................................................... 136
49 GMII 1000BASE-T Receive Signal Parameters .......................................................................... 137
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50 SerDes Timing Parameters ......................................................................................................... 138
51 MDIO Timing Parameters............................................................................................................ 140
52 I2C AC Timing Characteristics.....................................................................................................141
53 CPU Interface AC Signal Parameters ......................................................................................... 143
54 Transmit Pause Control Interface Timing Parameters ................................................................ 144
55 JTAG AC Timing Parameters ......................................................................................................145
56 System Reset AC Timing Parameters......................................................................................... 146
57 LED Interface AC Timing Parameters ......................................................................................... 147
58 MAC Control Registers ($ Port Index + Offset) ........................................................................... 149
59 MAC RX Statistics Registers ($ Port Index + Offset) .................................................................. 150
60 MAC TX Statistics Registers ($ Port Index + Offset)................................................................... 151
61 PHY Autoscan Registers ($ Port Index + Offset) ........................................................................ 151
62 Global Status and Configuration Registers ($ 0x500 - 0X50C) ................................................... 152
63 RX FIFO Registers ($ 0x580 - 0x5BF) ........................................................................................ 152
64 TX FIFO Registers ($ 0x600 - 0x63E) ......................................................................................... 153
65 MDIO Registers ($ 0x680 - 0x683)..............................................................................................154
66 SPI3 Registers ($ 0x700 - 0x716) ............................................................................................... 154
67 SerDes Registers ($ 0x780 - 0x798) ........................................................................................... 154
68 Optical Module Registers ($ 0x799 - 0x79F) ............................................................................... 155
69 Station Address ($ Port_Index +0x00 – +0x01)........................................................................... 155
70 Desired Duplex ($ Port_Index + 0x02) ........................................................................................ 156
71 FD FC Type ($ Port_Index + 0x03) ............................................................................................. 156
72 Collision Distance ($ Port_Index + 0x05) .................................................................................... 156
73 Collision Threshold ($ Port_Index + 0x06) .................................................................................. 156
74 FC TX Timer Value ($ Port_Index + 0x07) .................................................................................. 157
75 FD FC Address ($ Port_Index + 0x08 – + 0x09) ......................................................................... 157
76 IPG Receive Time 1 ($ Port_Index + 0x0A) ................................................................................ 157
77 IPG Receive Time 2 ($ Port_Index + 0x0B) ................................................................................ 158
78 IPG Transmit Time ($ Port_Index + 0x0C) .................................................................................. 158
79 Pause Threshold ($ Port_Index + 0x0E) ..................................................................................... 158
80 Max Frame Size (Addr: Port_Index + 0x0F)................................................................................ 159
81 MAC IF Mode and RGMII Speed ($ Port_Index + 0x10) ............................................................. 159
82 Flush TX ($ Port_Index + 0x11) .................................................................................................. 159
83 FC Enable ($ Port_Index + 0x12)................................................................................................ 160
84 FC Back Pressure Length ($ Port_Index + 0x13)........................................................................ 160
85 Short Runts Threshold ($ Port_Index + 0x14)............................................................................. 161
86 Discard Unknown Control Frame ($ Port_Index + 0x15)............................................................. 161
87 RX Config Word ($ Port_Index + 0x16)....................................................................................... 161
88 TX Config Word ($ Port_Index + 0x17) ....................................................................................... 162
89 Diverse Config Write ($ Port_Index + 0x18)................................................................................ 163
90 RX Packet Filter Control ($ Port_Index + 0x19) .......................................................................... 164
91 Port Multicast Address ($ Port_Index +0x1A – +0x1B) ............................................................... 165
92 MAC RX Statistics ($ Port_Index + 0x20 – + 0x39)..................................................................... 166
93 MAC TX Statistics ($ Port_Index +0x40 – +0x58) ....................................................................... 170
94 PHY Control ($ Port Index + 0x60).............................................................................................. 173
95 PHY Status ($ Port Index + 0x61) ............................................................................................... 174
96 PHY Identification 1 ($ Port Index + 0x62) .................................................................................. 175
97 PHY Identification 2 ($ Port Index + 0x63) .................................................................................. 175
98 Auto-Negotiation Advertisement ($ Port Index + 0x64) ............................................................... 176
99 Auto-Negotiation Link Partner Base Page Ability ($ Port Index + 0x65) ..................................... 177
100 Auto-Negotiation Expansion ($ Port Index + 0x66) ..................................................................... 178
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101 Auto-Negotiation Next Page Transmit ($ Port Index + 0x67) ...................................................... 179
102 Port Enable ($0x500)................................................................................................................... 180
103 Interface Mode ($0x501) ............................................................................................................. 180
104 Link LED Enable ($0x502)........................................................................................................... 181
105 MAC Soft Reset ($0x505)............................................................................................................ 181
106 MDIO Soft Reset ($0x506) .......................................................................................................... 182
107 CPU Interface ($0x508)............................................................................................................... 182
108 LED Control ($0x509).................................................................................................................. 182
109 LED Flash Rate ($0x50A)............................................................................................................ 183
110 LED Fault Disable ($0x50B) ........................................................................................................ 183
111 JTAG ID ($0x50C)....................................................................................................................... 184
112 RX FIFO High Watermark Port 0 ($0x580).................................................................................. 184
113 RX FIFO High Watermark Port 1 ($0x581).................................................................................. 185
114 RX FIFO High Watermark Port 2 ($0x582).................................................................................. 185
115 RX FIFO High Watermark Port 3 ($0x583).................................................................................. 185
116 RX FIFO Low Watermark Port 0 ($0x58A) .................................................................................. 186
117 RX FIFO Low Watermark Port 1 ($0x58B) .................................................................................. 186
118 RX FIFO Low Watermark Port 2 ($0x58C).................................................................................. 186
119 RX FIFO Low Watermark Port 3 ($0x58D).................................................................................. 187
120 RX FIFO Overflow Frame Drop Counter Ports 0 - 3 ($0x594 – 0x597)....................................... 187
121 RX FIFO Port Reset ($0x59E)..................................................................................................... 187
122 RX FIFO Errored Frame Drop Enable ($0x59F).......................................................................... 188
123 RX FIFO Overflow Event ($0x5A0) .............................................................................................189
124 RX FIFO Errored Frame Drop Counter Ports 0 - 3 ($0x5A2 - 0x5A5)......................................... 189
125 RX FIFO SPI3 Loopback Enable for Ports 0 - 3 ($0x5B2) .......................................................... 190
126 RX FIFO Padding and CRC Strip Enable ($0x5B3) .................................................................... 191
127 RX FIFO Transfer Threshold Port 0 ($0x5B8)............................................................................. 191
128 RX FIFO Transfer Threshold Port 1 ($0x5B9)............................................................................. 192
129 RX FIFO Transfer Threshold Port 2 ($0x5BA) ............................................................................ 192
130 RX FIFO Transfer Threshold Port 3 ($0x5BB) ............................................................................ 193
131 TX FIFO High Watermark Ports 0 - 3 ($0x600 – 0x603) ............................................................. 193
132 TX FIFO Low Watermark Register Ports 0 - 3 ($0x60A – 0x60D)............................................... 195
133 TX FIFO MAC Threshold Register Ports 0 - 3 ($0x614 – 0x617)................................................ 196
134 TX FIFO Overflow/Underflow/Out of Sequence Event ($0x61E)................................................. 197
135 Loop RX Data to TX FIFO (Line-Side Loopback) Ports 0 - 3 ($0x61F) ...................................... 198
136 TX FIFO Port Reset ($0x620)...................................................................................................... 198
137 TX FIFO Overflow Frame Drop Counter Ports 0 - 3 ($0x621 – 0x624) ....................................... 199
138 TX FIFO Errored Frame Drop Counter Ports 0 - 3 ($0x625 – 0x629) ......................................... 200
139 TX FIFO Occupancy Counter for Ports 0 - 3 ($0x62D – 0x630).................................................. 200
140 TX FIFO Port Drop Enable ($0x63D) .......................................................................................... 201
141 MDIO Single Command ($0x680) ............................................................................................... 201
142 MDIO Single Read and Write Data ($0x681) .............................................................................. 202
143 Autoscan PHY Address Enable ($0x682).................................................................................... 202
144 MDIO Control ($0x683) ............................................................................................................... 202
145 SPI3 Transmit and Global Configuration ($0x700)...................................................................... 203
146 SPI3 Receive Configuration ($0x701) ......................................................................................... 205
147 Address Parity Error Packet Drop Counter ($0x70A) .................................................................. 208
148 TX Driver Power Level Ports 0 - 3 ($0x784)................................................................................ 208
149 TX and RX Power-Down ($0x787) .............................................................................................. 209
150 RX Signal Detect Level Ports 0 - 3 ($0x793)............................................................................... 209
151 Clock and Interface Mode Change Enable Ports 0 - 3 ($0x794)................................................. 210
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152 Optical Module Status Ports 0-3 ($0x799)................................................................................... 211
153 Optical Module Control Ports 0 - 3 ($0x79A)............................................................................... 211
154 I2C Control Ports 0 - 3 ($0x79B)..................................................................................................212
155 I2C Data Ports 0 - 3 ($0x79F)......................................................................................................212
156 Package Description.................................................................................................................... 213
Page 21Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
1.0 Introduction
This document contains information on the Cortina Systems®IXF1104 4-Port Gigabit
Ethernet Media Access Controller (IXF1104 MAC), a four-port Gigabit Media Access
Controller that supports IEEE 802.3 10/100/1000 Mbps applications from
Cortina Systems, Inc. (Cortina).
1.1 What You Will Find in This Document
This document contains the following sections:
•Section 2.0, General Description, on page 22 provides the block diagram system
architecture.
•Section 3.0, Ball Assignments and Ball List Tables, on page 24 shows the signal
naming methodology and signal descriptions.
•Section 4.0, Ball Assignments and Signal Descriptions, on page 36 illustrates and lists
the IXF1104 ball grid diagram with two ball list tables (by signal name and ball location)
•Section 5.0, Functional Descriptions, on page 64 gives detailed information about the
operation of the IXF1104 including general features, and interface types and
descriptions.
•Section 7.0, Electrical Specifications, on page 126 provides information on the product-
operating parameters, electrical specifications, and timing parameters.
•Section 8.0, Register Set, on page 148 illustrates and lists the memory map, detailed
descriptions, default values for the register set, and detailed information on each
register.
•Section 9.0, Mechanical Specifications, on page 213 illustrates the packaging
information.
1.2 Related Documents
Document
IXF1104 Media Access Controller Design and Layout Guide
IXF1104 Media Access Controller Thermal Design Considerations
IXF1104 Media Access Controller Development Kit Manual
IXF1104 Media Access Controller Specification Update
Page 22Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
2.0 General Description
The IXF1104 MAC provides up to a 4.0 Gbps interface to four individual 10/100/1000 Mbps
full-duplex or 10/100 Mbps half-duplex-capable Ethernet Media Access Controllers (MACs).
The network processor is supported through a System Packet Interface Phase 3 (SPI3)
media interface. The following PHY interfaces are selected on a per-port basis:
• Serializer/Deserializer (SerDes) with Optical Module Interface support
• Gigabit Media Independent Interface (GMII)
• Reduced Gigabit Media Independent Interface (RGMII).
Figure 1 illustrates the IXF1104 MAC block diagram.
Figure 2 illustrates the IXF1104 MAC internal architecture.
Figure 1 Block Diagram
Forwarding Engine/Network Processor
CPU
IXF1104 MAC
SerDes/RGMII/GMII Interface
MDIO
SPI3
uP IF
PHY 1 Device
PHY 2 Device
PHY 3 Device
PHY 4 Device
B3175-02
Page 23Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
Figure 2 Internal Architecture
SPI3 Interface
CPU Interface RMON Statistics
Packet
TX
Buffer
RX
Packet
Buffer
Packet
Buffer
Packet
Buffer
Clock Control Block Clock Register Block
PLLs MDIO OMI
TX
TX
TX
RX
RX
RX
10/100/1000 MAC
10/100/1000 MAC
10/100/1000 MAC
10/100/1000 MAC
RGMII/GMII Interface
RGMII/GMII Interface
RGMII/GMII Interface
RGMII/GMII Interface
PMA Layer SerDes
PMA Layer SerDes
PMA Layer SerDes
PMA Layer SerDes
B3176-01
Page 24Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
3.0 Ball Assignments and Ball List Tables
3.1 Ball Assignments
See Figure 3, Table 1, Ball List in Alphanumeric Order by Signal Name, on page 25, and
Table 2, Ball List in Alphanumeric Order by Ball Location, on page 30 for the IXF1104 MAC
ball assignments.
Figure 3 552-Ball Assignments (Top View)
B1458-01
1AD AC AB AA Y W V U T R P N M L K J H G F E D C B A
AD AC AB AA Y W V U T R P N M L K J H G F E D C B A
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
V7 U7 T7 R7 P7 N7 M7 L7 K7 J7 H7 G7 F7 E7 D7 G7 B7 A7
V8
V9
V10
V11
V12
V13
V14
V15
V16
V
17
V18
V19
V20
V21
V22
V23
V24
U8
U9
U10
U11
U12
U13
U14
U15
U16
U17
U18
U19
U20
U21
U22
U23
U24
T8
T9
T10
T11
T12
T13
T14
T15
T16
T17
T18
T19
T20
T21
T22
T23
T24
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R22
R23
R24
P8
P9
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P24
N8
N9
N10
N11
N12
N13
N14
N15
N16
N17
N18
N19
N20
N121
N22
N23
N24
M8
M9
M10
M11
M12
M13
M14
M15
M16
M17
M18
M19
M20
M21
M22
M23
M24
L8
L9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L24
K8
K9
K10
K11
K12
K13
K14
K15
K16
K17
K18
K19
K20
K21
K22
K23
K24
J8
J9
J10
J11
J12
J13
J14
J15
J16
J17
J18
J19
J20
J21
J22
J23
J24
H8
H9
H10
H11
H12
H13
H14
H15
H16
H17
H18
H19
H20
H21
H22
H23
H24
G8
G9
G10
G11
G12
G13
G14
G15
G16
G17
G18
G19
G20
G21
G22
G23
G24
F8
F9
F10
F11
F12
F13
F14
F15
F16
F17
F18
F19
F20
F21
F22
F23
F24
E8
E9
E10
E11
E12
E13
E14
E15
E16
E17
E18
E19
E20
E21
E22
E23
E24
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23
C24
B28
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
= No Ball (A2, A3, A22, A23, A24, B1, B2, B23, B24, C1, C24, AB1, AB24, AC1, AC2, AC23, AC24, AD1, AD2, AD3,
AD22, AD23, AD24)
= No Pad (A1)
W24Y24AA24AB24AC24AD24
W23Y23AA23AB23AC23AD23
W22
Y22
AA22AB22AC22AD22
W21Y21AA21AB21AC21AD21
W20Y20AA20AB20AC20AD20
W19Y19AA19AB19AC19AD19
W18Y18AA18AB18AC18AD18
W17Y17AA17AB17AC17AD17
W16Y16AA16AB16AC16AD16
W15Y15AA15AB15AC15AD15
W14Y14AA14AB14AC14AD14
W13Y13AA13AB13AC13AD13
W12Y12AA12AB12AC12AD12
W11Y11AA11AB11AC11AD11
W10Y10AA10AB10AC10AD10
W9Y9AA9AB9AC9AD9
W8Y8AA8AB8AC8AD8
W7Y7AA7AB7AC7AD7
A6B6C6D6F6F6G6H6J6K6L6M6N6P6R6T6U6V6W6Y6AA6AB6AC6AD6
A5B5C5D5E5F5G5H5J5K5L5M5N5P5R5T5U5V5W5Y5AA4AB5AC5AD5
A4B4C4D4E4F4G4H4J4K4L4M4N4P4R4T4U4V4W4Y4AA4AB4AC4AD4
A3B3C3D3E3F3G3H3J3K3L3M3N3P13R3T3U3V3W3Y3AA3AB3AC3AD3
A2B2C2D2E2F2G2H2J2K2L2M2N2P2R2T2U2V2W2Y2AA2AB2AD2
B1C1D1E1F1G1H1J1K1L1M1N1P1R1T1U1V1W1Y1AA1AB1AC1
AC2
A1
AD1
Page 25Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
3.2 Ball List Tables
3.2.1 Balls Listed in Alphabetic Order by Signal Name
Table 1 shows the ball locations and signal names arranged in alphanumeric order by signal
name.
The following table notes relate to Tabl e 1 and Table 2:
1. GMII Ball Connection:
See Table 15 for connection in RGMII or fiber mode.
2. SPI3 Ball Connection:
See Table 16 for proper SPHY and MPHY connection.
3. Fiber Mode Ball Connection:
See Table 15 for use in RGMII and GMII (copper mode).
Table 1 Ball List in Alphanumeric Order by Signal Name
Signal Name Ball
Location
AVDD1P8_1 A5
AVDD1P8_1 A20
AVDD1P8_2 T23
AVDD1P8_2 AB16
AVDD2P5_1 AD20
AVDD2P5_2 R18
AVDD2P5_2 U14
CLK125 AD19
COL_01AB6
COL_11AB10
COL_21AD15
COL_31AB17
CRS_01AA5
CRS_11AA9
CRS_21AB15
CRS_31AC16
DTPA_02D3
DTPA_12L1
DTPA_22A9
DTPA_32J7
GND B6
GND B10
GND B15
GND B19
GND D4
GND D8
GND D12
GND D13
GND D17
GND D21
GND F2
GND F6
GND F10
GND F15
GND F19
GND F23
GND H4
GND H8
GND H12
GND H13
GND H17
GND H21
GND J10
GND J15
GND K2
GND K6
GND K9
GND K11
GND K14
GND K16
GND K19
GND K23
GND L10
Signal Name Ball
Location
GND L12
GND L13
GND L15
GND M4
GND M8
GND M11
GND M14
GND M17
GND M21
GND N4
GND N8
GND N11
GND N14
GND N17
GND N21
GND P10
GND P12
GND P13
GND P15
GND R2
GND R6
GND R9
GND R11
GND R14
GND R16
GND R19
GND R23
Signal Name Ball
Location
Page 26Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
GND T10
GND T15
GND U4
GND U8
GND U12
GND U13
GND U17
GND U21
GND W2
GND W6
GND W10
GND W15
GND W19
GND W23
GND AA4
GND AA8
GND AA12
GND AA13
GND AA17
GND AA21
GND AC6
GND AC10
GND AC15
GND AC19
GND AC14
GND L20
GND L5
GND R7
GND AB12
GND A4
GND A21
GND AD21
I2C_CLK L23
I2C_DATA_03L24
I2C_DATA_13M24
I2C_DATA_23N24
I2C_DATA_33P24
LED_CLK K24
LED_DATA M22
Signal Name Ball
Location
LED_LATCH L22
MDC4W24
MDIO4V21
MOD_DEF_INT N22
NC D24
NC E12
NC F11
NC G15
NC H7
NC H18
NC J21
NC K7
NC K18
NC K20
NC K22
NC L18
NC L19
NC L21
NC M7
NC M18
NC M20
NC N3
NC N18
NC P2
NC P4
NC P6
NC P7
NC P8
NC P17
NC P18
NC R5
NC R10
NC R12
NC R13
NC R15
NC R20
NC T6
NC T7
NC T8
Signal Name Ball
Location
NC T9
NC T21
NC T22
NC U5
NC U7
NC U9
NC U11
NC U18
NC V9
NC V10
NC V11
NC V13
NC AB18
NC AD4
NC AD5
No Ball A2
No Ball A3
No Ball A22
No Ball A23
No Ball A24
No Ball B1
No Ball B2
No Ball B23
No Ball B24
No Ball C1
No Ball C24
No Ball AB1
No Ball AB24
No Ball AC1
No Ball AC2
No Ball AC23
No Ball AC24
No Ball AD1
No Ball AD2
No Ball AD3
No Ball AD22
No Ball AD23
No Ball AD24
No Pad A1
Signal Name Ball
Location
Page 27Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
PTPA2B11
RDAT_02A15
RDAT_12A14
RDAT_22B14
RDAT_32C14
RDAT_42C13
RDAT_52D14
RDAT_62E14
RDAT_72F14
RDAT_82A17
RDAT_92C17
RDAT_102D16
RDAT_112E16
RDAT_122F16
RDAT_132E17
RDAT_142E18
RDAT_152F18
RDAT_162B20
RDAT_172B22
RDAT_182C20
RDAT_192C21
RDAT_202C22
RDAT_212D22
RDAT_222E22
RDAT_232E21
RDAT_242G18
RDAT_252G19
RDAT_262G20
RDAT_272G21
RDAT_282G22
RDAT_292G23
RDAT_302G24
RDAT_312F24
RENB_02A13
RENB_12A18
RENB_22C19
RENB_32E24
REOP_02C16
REOP_12D18
Signal Name Ball
Location
REOP_22C23
REOP_32J19
RERR_02A16
RERR_12G17
RERR_22D20
RERR_32H20
RFCLK2A19
RMOD02G14
RMOD12G13
RPRTY_02E15
RPRTY_12G16
RPRTY_22E20
RPRTY_32F20
RSOP_02B16
RSOP_12C18
RSOP_22E23
RSOP_32J18
RSX2E13
RVAL_02C15
RVAL_12B18
RVAL_22E19
RVAL_32F22
RX_DV_01V5
RX_DV_11AB11
RX_DV_21Y24
RX_DV_31V18
RX_ER_01W5
RX_ER_11Y12
RX_ER_21AA22
RX_ER_31U20
RX_LOS_INT3P19
RX_N_03R22
RX_N_13U22
RX_N_23R24
RX_N_33V24
RX_P_03P22
RX_P_13V22
RX_P_23T24
RX_P_33U24
Signal Name Ball
Location
RXC_01V4
RXC_11AD11
RXC_21AA24
RXC_31V23
RXD0_01V8
RXD0_11Y9
RXD0_21Y20
RXD0_31Y17
RXD1_01V7
RXD1_11Y11
RXD1_21Y21
RXD1_31Y18
RXD2_01W7
RXD2_11W11
RXD2_21Y22
RXD2_31Y19
RXD3_01Y7
RXD3_11W9
RXD3_21Y23
RXD3_31W18
RXD4_01Y6
RXD4_11AD10
RXD4_21W22
RXD4_31T16
RXD5_01Y5
RXD5_11AC11
RXD5_21V20
RXD5_31T17
RXD6_01AB5
RXD6_11AA11
RXD6_21V19
RXD6_31T18
RXD7_01AC5
RXD7_11Y10
RXD7_21W20
RXD7_31T19
STPA2C11
SYS_RST_L AD12
TADR02A11
Signal Name Ball
Location
Page 28Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
TADR12A12
TCLK J22
TDAT02B3
TDAT12C2
TDAT22C3
TDAT32D1
TDAT42C4
TDAT52C5
TDAT62B5
TDAT72C6
TDAT82F1
TDAT92G1
TDAT102G2
TDAT112H1
TDAT122J1
TDAT132J2
TDAT142J3
TDAT152H3
TDAT162E5
TDAT172E6
TDAT182E7
TDAT192E8
TDAT202E9
TDAT212E10
TDAT222F9
TDAT232C8
TDAT242G4
TDAT252G5
TDAT262G6
TDAT272G7
TDAT282G8
TDAT292G9
TDAT302F5
TDAT312F7
TDI J24
TDO H24
TENB_02B7
TENB_12E2
TENB_22C9
Signal Name Ball
Location
TENB_32J4
TEOP_02A7
TEOP_12F3
TEOP_22E4
TEOP_32H5
TERR_02A8
TERR_12K1
TERR_22E11
TERR_32J8
TFCLK2D7
TMOD02A6
TMOD12D9
TMS H22
TPRTY_02D5
TPRTY_12G3
TPRTY_22B9
TPRTY_32J6
TRST_L J23
TSOP_02C7
TSOP_12E3
TSOP_22C10
TSOP_32J5
TSX E1
TX_EN_01AB2
TX_EN_11Y8
TX_EN_21AC22
TX_EN_31V12
TX_ER_01W1
TX_ER_11AD6
TX_ER_21AD17
TX_ER_31AB13
TX_FAULT_INT3P23
TX_N_03Y14
TX_N_13AD14
TX_N_23Y16
TX_N_33AD18
TX_P_03Y13
TX_P_13AD13
TX_P_23W16
Signal Name Ball
Location
TX_P_33AC18
TXC_01AA1
TXC_11AD7
TXC_21AC20
TXC_31AB14
TXD0_01Y1
TXD0_11AC7
TXD0_21AB20
TXD0_31V14
TXD1_01Y2
TXD1_11AB7
TXD1_21AB21
TXD1_31V15
TXD2_01Y3
TXD2_11AB9
TXD2_21AB22
TXD2_31V16
TXD3_01AA3
TXD3_11AD9
TXD3_21AB23
TXD3_31V17
TXD4_01AB3
TXD4_11AA7
TXD4_21AD16
TXD4_31AA14
TXD5_01AC3
TXD5_11AB8
TXD5_21AB19
TXD5_31Y15
TXD6_01AB4
TXD6_11AD8
TXD6_21AA20
TXD6_31AA16
TXD7_01Y4
TXD7_11AC9
TXD7_21AA18
TXD7_31W14
TXPAUSE_ADD0 N20
TXPAUSE_ADD1 P20
Signal Name Ball
Location
Page 29Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
TXPAUSE_ADD2 P21
TXPAUSEFR T20
UPX_ADD0 P3
UPX_ADD1 N1
UPX_ADD2 P1
UPX_ADD3 R1
UPX_ADD4 T1
UPX_ADD5 U1
UPX_ADD6 V1
UPX_ADD7 V2
UPX_ADD8 V3
UPX_ADD9 U3
UPX_ADD10 T3
UPX_BADD0 T2
UPX_BADD1 W3
uPx_Cs_L R3
UPX_DATA0 L2
UPX_DATA1 K3
UPX_DATA2 L3
UPX_DATA3 M3
UPX_DATA4 L4
UPX_DATA5 N5
UPX_DATA6 M5
UPX_DATA7 K5
UPX_DATA8 P5
UPX_DATA9 L6
UPX_DATA10 L7
UPX_DATA11 N7
UPX_DATA12 L8
UPX_DATA13 H9
UPX_DATA14 J9
UPX_DATA15 N10
UPX_DATA16 M10
UPX_DATA17 K10
UPX_DATA18 G10
UPX_DATA19 H11
UPX_DATA20 G11
UPX_DATA21 K12
UPX_DATA22 G12
Signal Name Ball
Location
UPX_DATA23 K13
UPX_DATA24 H14
UPX_DATA25 K15
UPX_DATA26 N15
UPX_DATA27 M15
UPX_DATA28 J16
UPX_DATA29 H16
UPX_DATA30 J17
UPX_DATA31 L17
uPx_Rd_L V6
uPx_Rdy_L M1
UPX_WIDTH0 U16
UPX_WIDTH1 T5
uPx_Wr_L T4
VDD D6
VDD D10
VDD D15
VDD D19
VDD F4
VDD F21
VDD H10
VDD H15
VDD J11
VDD J14
VDD K4
VDD K8
VDD K17
VDD K21
VDD L9
VDD L11
VDD L14
VDD L16
VDD P9
VDD P11
VDD P14
VDD P16
VDD R4
VDD R8
VDD R17
Signal Name Ball
Location
VDD R21
VDD T11
VDD T14
VDD U10
VDD U15
VDD W4
VDD W21
VDD AA6
VDD AA10
VDD AA15
VDD AA19
VDD C12
VDD D11
VDD J20
VDD A10
VDD2 B4
VDD2 B8
VDD2 B12
VDD2 D2
VDD2 F8
VDD2 F12
VDD2 H2
VDD2 H6
VDD2 J12
VDD2 M2
VDD2 M6
VDD2 M9
VDD2 M12
VDD3 B13
VDD3 B17
VDD3 B21
VDD3 D23
VDD3 F13
VDD3 F17
VDD3 H19
VDD3 H23
VDD3 J13
VDD3 M13
VDD3 M16
Signal Name Ball
Location
Page 30Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
3.2.2 Balls Listed in Alphabetic Order by Ball Location
Table 2 shows the ball locations and signal names arranged in order by ball location.
Table 2 Ball List in Alphanumeric Order by Ball Location
VDD3 M19
VDD3 M23
VDD4 N13
VDD4 N16
VDD4 N19
VDD4 N23
VDD4 T13
VDD4 U19
VDD4 U23
VDD4 W13
VDD4 W17
VDD4 AA23
VDD4 AC13
VDD4 AC17
VDD4 AC21
VDD5 N2
VDD5 N6
VDD5 N9
VDD5 N12
VDD5 T12
VDD5 U2
VDD5 U6
VDD5 W8
VDD5 W12
VDD5 AA2
VDD5 AC4
VDD5 AC8
VDD5 AC12
Signal Name Ball
Location
Ball
Location Signal Name
A1 No Pad
A2 No Ball
A3 No Ball
A4 GND
A5 AVDD1P8_1
A6 TMOD02
A7 TEOP_02
A8 TERR_02
A9 DTPA_22
A10 VDD
Ball
Location Signal Name
A11 TADR02
A12 TADR12
A13 RENB_02
A14 RDAT_12
A15 RDAT_02
Ball
Location Signal Name
Page 31Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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A16 RERR_02
A17 RDAT_82
A18 RENB_12
A19 RFCLK2
A20 AVDD1P8_1
A21 GND
A22 No Ball
A23 No Ball
A24 No Ball
B1 No Ball
B2 No Ball
B3 TDAT02
B4 VDD2
B5 TDAT62
B6 GND
B7 TENB_02
B8 VDD2
B9 TPRTY_22
B10 GND
B11 PTPA2
B12 VDD2
B13 VDD3
B14 RDAT_22
B15 GND
B16 RSOP_02
B17 VDD3
B18 RVAL_12
B19 GND
B20 RDAT_162
B21 VDD3
B22 RDAT_172
B23 No Ball
B24 No Ball
C1 No Ball
C2 TDAT12
C3 TDAT22
C4 TDAT42
C5 TDAT52
C6 TDAT72
Ball
Location Signal Name
C7 TSOP_02
C8 TDAT232
C9 TENB_22
C10 TSOP_22
C11 STPA2
C12 VDD
C13 RDAT_42
C14 RDAT_32
C15 RVAL_02
C16 REOP_02
C17 RDAT_92
C18 RSOP_12
C19 RENB_22
C20 RDAT_182
C21 RDAT_192
C22 RDAT_202
C23 REOP_22
C24 No Ball
D1 TDAT32
D2 VDD2
D3 DTPA_02
D4 GND
D5 TPRTY_02
D6 VDD
D7 TFCLK2
D8 GND
D9 TMOD12
D10 VDD
D11 VDD
D12 GND
D13 GND
D14 RDAT_52
D15 VDD
D16 RDAT_102
D17 GND
D18 REOP_12
D19 VDD
D20 RERR_22
D21 GND
Ball
Location Signal Name
D22 RDAT_212
D23 VDD3
D24 NC
E1 TSX
E2 TENB_12
E3 TSOP_12
E4 TEOP_22
E5 TDAT162
E6 TDAT172
E7 TDAT182
E8 TDAT192
E9 TDAT202
E10 TDAT212
E11 TERR_22
E12 NC
E13 RSX2
E14 RDAT_62
E15 RPRTY_02
E16 RDAT_112
E17 RDAT_132
E18 RDAT_142
E19 RVAL_22
E20 RPRTY_22
E21 RDAT_232
E22 RDAT_222
E23 RSOP_22
E24 RENB_32
F1 TDAT82
F2 GND
F3 TEOP_12
F4 VDD
F5 TDAT302
F6 GND
F7 TDAT312
F8 VDD2
F9 TDAT222
F10 GND
F11 NC
F12 VDD2
Ball
Location Signal Name
Page 32Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
F13 VDD3
F14 RDAT_72
F15 GND
F16 RDAT_122
F17 VDD3
F18 RDAT_152
F19 GND
F20 RPRTY_32
F21 VDD
F22 RVAL_32
F23 GND
F24 RDAT_312
G1 TDAT92
G2 TDAT102
G3 TPRTY_12
G4 TDAT242
G5 TDAT252
G6 TDAT262
G7 TDAT272
G8 TDAT282
G9 TDAT292
G10 UPX_DATA18
G11 UPX_DATA20
G12 UPX_DATA22
G13 RMOD12
G14 RMOD02
G15 NC
G16 RPRTY_12
G17 RERR_12
G18 RDAT_242
G19 RDAT_252
G20 RDAT_262
G21 RDAT_272
G22 RDAT_282
G23 RDAT_292
G24 RDAT_302
H1 TDAT112
H2 VDD2
H3 TDAT152
Ball
Location Signal Name
H4 GND
H5 TEOP_32
H6 VDD2
H7 NC
H8 GND
H9 UPX_DATA13
H10 VDD
H11 UPX_DATA19
H12 GND
H13 GND
H14 UPX_DATA24
H15 VDD
H16 UPX_DATA29
H17 GND
H18 NC
H19 VDD3
H20 RERR_32
H21 GND
H22 TMS
H23 VDD3
H24 TDO
J1 TDAT122
J2 TDAT132
J3 TDAT142
J4 TENB_32
J5 TSOP_32
J6 TPRTY_32
J7 DTPA_32
J8 TERR_32
J9 UPX_DATA14
J10 GND
J11 VDD
J12 VDD2
J13 VDD3
J14 VDD
J15 GND
J16 UPX_DATA28
J17 UPX_DATA30
J18 RSOP_32
Ball
Location Signal Name
J19 REOP_32
J20 VDD
J21 NC
J22 TCLK
J23 TRST_L
J24 TDI
K1 TERR_12
K2 GND
K3 UPX_DATA1
K4 VDD
K5 UPX_DATA7
K6 GND
K7 NC
K8 VDD
K9 GND
K10 UPX_DATA17
K11 GND
K12 UPX_DATA21
K13 UPX_DATA23
K14 GND
K15 UPX_DATA25
K16 GND
K17 VDD
K18 NC
K19 GND
K20 NC
K21 VDD
K22 NC
K23 GND
K24 LED_CLK
L1 DTPA_12
L2 UPX_DATA0
L3 UPX_DATA2
L4 UPX_DATA4
L5 GND
L6 UPX_DATA9
L7 UPX_DATA10
L8 UPX_DATA12
L9 VDD
Ball
Location Signal Name
Page 33Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
L10 GND
L11 VDD
L12 GND
L13 GND
L14 VDD
L15 GND
L16 VDD
L17 UPX_DATA31
L18 NC
L19 NC
L20 GND
L21 NC
L22 LED_LATCH
L23 I2C_CLK
L24 I2C_DATA_03
M1 uPx_Rdy_L
M2 VDD2
M3 UPX_DATA3
M4 GND
M5 UPX_DATA6
M6 VDD2
M7 NC
M8 GND
M9 VDD2
M10 UPX_DATA16
M11 GND
M12 VDD2
M13 VDD3
M14 GND
M15 UPX_DATA27
M16 VDD3
M17 GND
M18 NC
M19 VDD3
M20 NC
M21 GND
M22 LED_DATA
M23 VDD3
M24 I2C_DATA_13
Ball
Location Signal Name
N1 UPX_ADD1
N2 VDD5
N3 NC
N4 GND
N5 UPX_DATA5
N6 VDD5
N7 UPX_DATA11
N8 GND
N9 VDD5
N10 UPX_DATA15
N11 GND
N12 VDD5
N13 VDD4
N14 GND
N15 UPX_DATA26
N16 VDD4
N17 GND
N18 NC
N19 VDD4
N20 TXPAUSE_ADD0
N21 GND
N22 MOD_DEF_INT
N23 VDD4
N24 I2C_DATA_23
P1 UPX_ADD2
P2 NC
P3 UPX_ADD0
P4 NC
P5 UPX_DATA8
P6 NC
P7 NC
P8 NC
P9 VDD
P10 GND
P11 VDD
P12 GND
P13 GND
P14 VDD
P15 GND
Ball
Location Signal Name
P16 VDD
P17 NC
P18 NC
P19 RX_LOS_INT3
P20 TXPAUSE_ADD1
P21 TXPAUSE_ADD2
P22 RX_P_03
P23 TX_FAULT_INT3
P24 I2C_DATA_33
R1 UPX_ADD3
R2 GND
R3 uPx_Cs_L
R4 VDD
R5 NC
R6 GND
R7 GND
R8 VDD
R9 GND
R10 NC
R11 GND
R12 NC
R13 NC
R14 GND
R15 NC
R16 GND
R17 VDD
R18 AVDD2P5_2
R19 GND
R20 NC
R21 VDD
R22 RX_N_03
R23 GND
R24 RX_N_23
T1 UPX_ADD4
T2 UPX_BADD0
T3 UPX_ADD10
T4 uPx_Wr_L
T5 UPX_WIDTH1
T6 NC
Ball
Location Signal Name
Page 34Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
T7 NC
T8 NC
T9 NC
T10 GND
T11 VDD
T12 VDD5
T13 VDD4
T14 VDD
T15 GND
T16 RXD4_31
T17 RXD5_31
T18 RXD6_31
T19 RXD7_31
T20 TXPAUSEFR
T21 NC
T22 NC
T23 AVDD1P8_2
T24 RX_P_23
U1 UPX_ADD5
U2 VDD5
U3 UPX_ADD9
U4 GND
U5 NC
U6 VDD5
U7 NC
U8 GND
U9 NC
U10 VDD
U11 NC
U12 GND
U13 GND
U14 AVDD2P5_2
U15 VDD
U16 UPX_WIDTH0
U17 GND
U18 NC
U19 VDD4
U20 RX_ER_31
U21 GND
Ball
Location Signal Name
U22 RX_N_13
U23 VDD4
U24 RX_P_33
V1 UPX_ADD6
V2 UPX_ADD7
V3 UPX_ADD8
V4 RXC_01
V5 RX_DV_01
V6 uPx_Rd_L
V7 RXD1_01
V8 RXD0_01
V9 NC
V10 NC
V11 NC
V12 TX_EN_31
V13 NC
V14 TXD0_31
V15 TXD1_31
V16 TXD2_31
V17 TXD3_31
V18 RX_DV_31
V19 RXD6_21
V20 RXD5_21
V21 MDIO4
V22 RX_P_13
V23 RXC_31
V24 RX_N_33
W1 TX_ER_01
W2 GND
W3 UPX_BADD1
W4 VDD
W5 RX_ER_01
W6 GND
W7 RXD2_01
W8 VDD5
W9 RXD3_11
W10 GND
W11 RXD2_11
W12 VDD5
Ball
Location Signal Name
W13 VDD4
W14 TXD7_31
W15 GND
W16 TX_P_23
W17 VDD4
W18 RXD3_31
W19 GND
W20 RXD7_21
W21 VDD
W22 RXD4_21
W23 GND
W24 MDC4
Y1 TXD0_01
Y2 TXD1_01
Y3 TXD2_01
Y4 TXD7_01
Y5 RXD5_01
Y6 RXD4_01
Y7 RXD3_01
Y8 TX_EN_11
Y9 RXD0_11
Y10 RXD7_11
Y11 RXD1_11
Y12 RX_ER_11
Y13 TX_P_03
Y14 TX_N_03
Y15 TXD5_31
Y16 TX_N_23
Y17 RXD0_31
Y18 RXD1_31
Y19 RXD2_31
Y20 RXD0_21
Y21 RXD1_21
Y22 RXD2_21
Y23 RXD3_21
Y24 RX_DV_21
AA1 TXC_01
AA2 VDD5
AA3 TXD3_01
Ball
Location Signal Name
Page 35Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Datasheet
278757, Revision 13.2
17 September 2008
AA4 GND
AA5 CRS_01
AA6 VDD
AA7 TXD4_11
AA8 GND
AA9 CRS_11
AA10 VDD
AA11 RXD6_11
AA12 GND
AA13 GND
AA14 TXD4_31
AA15 VDD
AA16 TXD6_31
AA17 GND
AA18 TXD7_21
AA19 VDD
AA20 TXD6_21
AA21 GND
AA22 RX_ER_21
AA23 VDD4
AA24 RXC_21
AB1 No Ball
AB2 TX_EN_01
AB3 TXD4_01
AB4 TXD6_01
AB5 RXD6_01
AB6 COL_01
AB7 TXD1_11
AB8 TXD5_11
AB9 TXD2_11
AB10 COL_11
AB11 RX_DV_11
AB12 GND
AB13 TX_ER_31
AB14 TXC_31
AB15 CRS_21
AB16 AVDD1P8_2
AB17 COL_31
AB18 NC
Ball
Location Signal Name
AB19 TXD5_21
AB20 TXD0_21
AB21 TXD1_21
AB22 TXD2_21
AB23 TXD3_21
AB24 No Ball
AC1 No Ball
AC2 No Ball
AC3 TXD5_01
AC4 VDD5
AC5 RXD7_01
AC6 GND
AC7 TXD0_11
AC8 VDD5
AC9 TXD7_11
AC10 GND
AC11 RXD5_11
AC12 VDD5
AC13 VDD4
AC14 GND
AC15 GND
AC16 CRS_31
AC17 VDD4
AC18 TX_P_33
AC19 GND
AC20 TXC_21
AC21 VDD4
AC22 TX_EN_21
AC23 No Ball
AC24 No Ball
AD1 No Ball
AD2 No Ball
AD3 No Ball
AD4 NC
AD5 NC
AD6 TX_ER_11
AD7 TXC_11
AD8 TXD6_11
AD9 TXD3_11
Ball
Location Signal Name
AD10 RXD4_11
AD11 RXC_11
AD12 SYS_RST_L
AD13 TX_P_13
AD14 TX_N_13
AD15 COL_21
AD16 TXD4_21
AD17 TX_ER_21
AD18 TX_N_33
AD19 CLK125
AD20 AVDD2P5_1
AD21 GND
AD22 No Ball
AD23 No Ball
AD24 No Ball
Ball
Location Signal Name
Page 36Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Datasheet
278757, Revision 13.2
17 September 2008
4.0 Ball Assignments and Signal Descriptions
4.1 Naming Conventions
4.1.1 Signal Name Conventions
Signal names begin with a Signal Mnemonic, and can also contain one or more of the
following designations: a differential pair designation, a serial designation, a port
designation (RGMII interface), and an active low designation. Signal naming conventions
are as follows:
Differential Pair + Port Designation. The positive and negative components of differential
pairs tied to a specific port are designated by the Signal Mnemonic, immediately followed by
an underscore and either P (positive component) or N (negative component), and an
underscore followed by the port designation. For example, SerDes interface signals for port
0 are identified as TX_P_0 and TX_N_0.
Serial Designation. A set of signals that are not tied to any specific port are designated by
the Signal Mnemonic, followed by a bracketed serial designation. For example, the set of 11
CPU Address Bus signals is identified as UPX_ADD[10:0].
Port Designation. Individual signals that apply to a particular port are designated by the
Signal Mnemonic, immediately followed by an underscore and the Port Designation. For
example, RGMII Transmit Control signals are identified as TX_CTL_0, TX_CTL_1,
TX_CTL_2, and so on.
Port Bus Designation. A set of bus signals that apply to a particular port are designated by
the Signal Mnemonic, immediately followed by a bracketed bus designation, followed by an
underscore and the port designation. For example, RGMII transmit data bus signals are
identified as TD[3:0]_0, TD[3:0]_1, TD[3:0]_2, and so on.
Active Low Designation. A control input or indicator output that is active Low is designated
by a final suffix consisting of an underscore followed by an upper case “L”. For example, the
CPU cycle complete identifier is shown as UPX_RDY_L.
4.1.2 Register Address Conventions
Registers located in on-chip memory are accessed using a register address, which is
provided in Hex notation. A Register Address is indicated by the dollar sign ($), followed by
the memory location in Hex.
4.2 Interface Signal Groups
This section describes the IXF1104 MAC signals in groups according to the associated
interface or function. Figure 4 shows the various interfaces available on the IXF1104 MAC.
Page 37Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
4.3 Signal Description Tables
The I/O signals, power supplies, or ground returns associated with each IXF1104 MAC
connection ball are described in Ta bl e 3 through Table 14.
Figure 4 Interface Signals
TDAT[31:0]
TFCLK
TENB_0
TERR_0
TPRTY_0
TMOD[1:0]
TSX
TSOP_0
TEOP_0
TADR[1:0]
DTPA_0:3
STPA
PTPA
RDAT[31:0]
RFCLK
RENB_0
RVAL_0
RERR_0
RPRTY_0
RMOD[1:0]
RSX
RSOP_0
REOP_0
TMS
TDI
TDO
TCLK
MDIO
MDC
TXPAUSEADD[2:0]
TXPAUSEFR
UPX_WIDTH[1:0]
UPX_DATA[31:0]
UPX_ADD[10:0]
UPX_BADD[1:0]
UPX_WR_L
UPX_RD_L
UPX_CS_L
UPX_RDY_L
LED_CLK
LED_DATA
LED_LATCH
SYS_RES_L
CLK125
MOD_DEF_0:3
TX_DISABLE_0:3
TX_FAULT_0:3
RX_LOS_0:3
TX_FAULT_INT
RX_LOS_INT
MOD_DEF_INT
I2C_CLK
I2C_DATA_0:3
SPI3
Interface
JTAG
Interface
MDIO
Interface
Pause
Control
Interface
CPU
Interface
LED
Interface
System
Interface
GMII RGMII
GMII and
RGMII
Interfaces*
* Data and clock balls are shared for
GMII and RGMII Interfaces
SerDes
Interface
Optical
Module
Interface
Signals**
** These optical module signals
are multiplexed on the GMII balls.
RX_P/N_0:3
TX_P/N_0:3
TRST_L
IXF1104
Media Access
Controller
B3181-02
MPHYSPHY
TFCLK
TENB_0:3
TERR_0:3
TPRTY_0:3
TSOP_0:3
TEOP_0:3
TDAT[7:0]_0:3
TADR[1:0]
DTPA_0:3
PTPA
RDAT[7:0]_0:3
RFCLK
RENB_0:3
RVAL_0:3
RERR_0:3
RPRTY_0:3
RSOP_0:3
REOP_0:3
TXC_0:3
TXD[7:0]_3
TXC_0:3
TD[3:0]_3
TXD[7:0]_2 TD[3:0]_2
TXD[7:0]_1 TD[3:0]_1
TXD[7:0]_0 TD[3:0]_0
TX_EN_0:3
TX_ER_0:3
TX_CTL_0:3
RXC_0:3 RXC_0:3
RXD[7:0]_3
RD[3:0]_3
RXD[7:0]_2
RD[3:0]_2RXD[7:0]_1
RD[3:0]_1
RXD[7:0]_0
RD[3:0]_0
RX_DV_0:3
RX_ER_0:3
CRS_0:3
COL_0:3
RX_CTL_0:3
Page 38Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
Table 3 SPI3 Interface Signal Descriptions (Sheet 1 of 8)
Signal Name Ball
Designator Type Standard Description
MPHY SPHY
TDAT31
TDAT30
TDAT29
TDAT28
TDAT27
TDAT26
TDAT25
TDAT24
TDAT7_3
TDAT6_3
TDAT5_3
TDAT4_3
TDAT3_3
TDAT2_3
TDAT1_3
TDAT0_3
F7
F5
G9
G8
G7
G6
G5
G4
Input 3.3 V
LVTTL
Transmit Data Bus.
Carries payload data to the IXF1104 MAC
egress path.
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Bits
[31:24]
[7:0] for port 3
TDAT23
TDAT22
TDAT21
TDAT20
TDAT19
TDAT18
TDAT17
TDAT16
TDAT7_2
TDAT6_2
TDAT5_2
TDAT4_2
TDAT3_2
TDAT2_2
TDAT1_2
TDAT0_2
C8
F9
E10
E9
E8
E7
E6
E5
Input 3.3 V
LVTTL
Transmit Data Bus.
Carries payload data to the IXF1104 MAC
egress path.
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Bits
[23:16]
[7:0] for port 2
TDAT15
TDAT14
TDAT13
TDAT12
TDAT11
TDAT10
TDAT9
TDAT8
TDAT7_1
TDAT6_1
TDAT5_1
TDAT4_1
TDAT3_1
TDAT2_1
TDAT1_1
TDAT0_1
H3
J3
J2
J1
H1
G2
G1
F1
Input 3.3 V
LVTTL
Transmit Data Bus.
Carries payload data to the IXF1104 MAC
egress path.
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Bits
[15:8]
[7:0] for port 1
TDAT7
TDAT6
TDAT5
TDAT4
TDAT3
TDAT2
TDAT1
TDAT0
TDAT7_0
TDAT6_0
TDAT5_0
TDAT4_0
TDAT3_0
TDAT2_0
TDAT1_0
TDAT0_0
C6
B5
C5
C4
D1
C3
C2
B3
Input 3.3 V
LVTTL
Transmit Data Bus.
Carries payload data to the IXF1104 MAC
egress path.
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Bits
7:0]
[7:0] for port 0
TFCLK TFCLK D7 Input 3.3 V
LVTTL
Transmit Clock.
TFCLK is the clock associated with all
transmit signals. Data and control lines are
sampled on the rising edge of TFCLK
(frequency operation range 90 - 133 MHz).
TPRTY_0 TPRTY_0
TPRTY_1
TPRTY_2
TPRTY_3
D5
G3
B9
J6
Input 3.3 V
LVTTL
Transmit Parity.
TPRTY indicates odd parity for the TDAT
bus. TPRTY is valid only when a channel
asserts either TENB or TSX. Odd parity is
the default configuration; however, even
parity can be selected (see Table 145, SPI3
Transmit and Global Configuration
($0x700), on page 203).
32-bit Multi-PHY mode: TPRTY_0 is the
parity bit covering all 32 bits.
4 x 8 Single-PHY mode: TPRTY_0:3 bits
correspond to the respective TDAT[3:0]_n
channels.
Page 39Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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17 September 2008
TENB_0 TENB_0
TENB_1
TENB_2
TENB_3
B7
E2
C9
J4
Input 3.3 V
LVTTL
Transmit Write Enable.
TENB_0:3 asserted causes an attached
PHY to process TDAT[n], TMOD, TSOP,
TEOP and TERR signals.
32-bit Multi-PHY mode: TENB_0 is the
enable bit for all 32 bits.
4 x 8 Single-PHY mode: TENB_0:3 bits
correspond to the respective TDAT[3:0]_n
channels and their associated control and
status signals.
TERR_0 TERR_0
TERR_1
TERR_2
TERR_3
A8
K1
E11
J8
Input 3.3 V
LVTTL
Transmit Error.
TERR indicates that there is an error in the
current packet. TERR is valid when
simultaneously asserted with TEOP and
TENB.
32-bit Multi-PHY mode: TERR_0 is the bit
asserted for all 32 bits.
4 x 8 Single-PHY mode: Each bit of
TERR_0:3 corresponds to the respective
TDAT[3:0]_n channel.
TSOP_0 TSOP_0
TSOP_1
TSOP_2
TSOP_3
C7
E3
C10
J5
Input 3.3 V
LVTTL
Transmit Start-of-Packet.
TSOP indicates the start of a packet and is
valid when asserted simultaneously with
TENB.
32-bit Multi-PHY mode: TSOP_0 is the bit
asserted for all 32 bits.
4 x 8 Single-PHY mode: Each bit of
TSOP_0:3 corresponds to the respective
TDAT[3:0]_n channel.
TEOP_0 TEOP_0
TEOP_1
TEOP_2
TEOP_3
A7
F3
E4
H5
Input 3.3 V
LVTTL
Transmit End-of-Packet.
TEOP indicates the end of a packet and is
valid when asserted simultaneously with
TENB.
32-bit Multi-PHY mode: TEOP_0 is the bit
asserted for all 32 bits.
4 x 8 Single-PHY mode: Each bit of
TEOP_0:3 corresponds to the respective
TDAT[3:0]_n channel.
Table 3 SPI3 Interface Signal Descriptions (Sheet 2 of 8)
Signal Name Ball
Designator Type Standard Description
MPHY SPHY
Page 40Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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TMOD1
TMOD0 NA D9
A6 Input 3.3 V
LVTTL
TMOD[1:0] Transmit Word Modulo.
32-bit Multi-PHY mode: TMOD[1:0]
indicates the valid data bytes of TDAT[31:0].
During transmission, TMOD[1:0] should
always be “00” until the last double word is
transferred on TDAT[31:0]. TMOD[1:0]
specifies the valid bytes of TDAT when
TEOP is asserted:
TMOD[1:0] – Valid Bytes of TDAT
00 = 4 bytes [31:0]
01 = 3 bytes [31:8]
10 = 2 bytes [31:16]
11 = 1 byte [31:24]
TENB must be asserted simultaneously for
TMOD[1:0] to be valid.
4 x 8 Single-PHY mode: MOD[1:0] is not
required.
TSX NA E1 Input 3.3 V
LVTTL
Transmit Start of Transfer.
32-bit Multi-PHY mode: TSX asserted with
TENB = 1 indicates that the PHY address is
present on TDAT[7:0]. The valid values on
TDAT[7:0] are 3, 2, 1, and 0. When
TENB = 0, TSX is not used by the PHY
device.
Note: Only TDAT[1:0] are relevant; all
other bits are “Don’t Care”.
4 x 8 Single-PHY mode: TSX is not used.
TADR1
TADR0
TADR1
TADR0
A12
A11 Input 3.3 V
LVTTL
TADR[1:0] Transmit PHY Address.
The value on TADR[1:0] selects one of the
PHY ports that drives the PTPA signal after
the rising edge of TFCLK.
DTPA_0
DTPA_1
DTPA_2
DTPA_3
DTPA_0
DTPA_1
DTPA_2
DTPA_3
D3
L1
A9
J7
Output 3.3 V
LVTTL
DTPA_0:3 Direct Transmit Packet
Available.
A direct status indication for transmit FIFOs
of ports 0:3.
When High, DTPA indicates that the amount
of data in the TX FIFO is below the TX FIFO
High watermark. When the High watermark
is crossed, DTPA transitions Low to indicate
that the TX FIFO is almost full. It stays Low
until the amount of data in the TX FIFO
goes back below the TX FIFO Low
watermark. At this point, DTPA transitions
High to indicate that the programmed
number of bytes are now available for data
transfers.
Note: For more information, see Table
131, TX FIFO High Watermark
Ports 0 - 3 ($0x600 – 0x603), on
page 193 and Table 132, TX FIFO
Low Watermark Register Ports 0 - 3
($0x60A – 0x60D), on page 195.
DTPA is updated on the rising edge of
TFCLK.
Table 3 SPI3 Interface Signal Descriptions (Sheet 3 of 8)
Signal Name Ball
Designator Type Standard Description
MPHY SPHY
Page 41Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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278757, Revision 13.2
17 September 2008
STPA NA C11 Output 3.3 V
LVTTL
Selected-PHY Transmit Packet Available.
STPA is only meaningful in a 32-bit multi-
PHY mode.
STPA is a direct status indication for
transmit FIFOs of ports 0:3.
When High, STPA indicates that the amount
of data in the TX FIFO, specified by the
latest in-band address, is below the
TX FIFO High watermark. When the High
watermark is crossed, STPA transitions Low
to indicate the TX FIFO is almost full. It
stays Low until the amount of data in the
TX FIFO goes back below the TX FIFO Low
watermark. At this point, STPA transitions
High to indicate that the programmed
number of bytes are now available for data
transfers.
Note: For more information, see Table
131, TX FIFO High Watermark
Ports 0 - 3 ($0x600 – 0x603), on
page 193 and Table 132, TX FIFO
Low Watermark Register Ports 0 - 3
($0x60A – 0x60D), on page 195.
STPA provides the status indication for the
selected port to avoid FIFO overflows while
polling is performed. The port reported by
STPA is updated on the following rising
edge of TFCLK after TSX is sampled as
asserted. STPA is updated on the rising
edge of TFCLK.
PTPA PTPA B11 Output 3.3 V
LVTTL
Polled-PHY Transmit Packet Available.
PTPA allows the polling of the port selected
by the TADR address bus.
When High, PTPA indicates that the amount
of data in the TX FIFO is below the TX FIFO
High watermark. When the High watermark
is crossed, PTPA transitions Low to indicate
that the TX FIFO is almost full. It stays Low
until the amount data in the TX FIFO goes
back below the TX FIFO Low watermark. At
this point, PTPA transitions High to indicate
that the programmed number of bytes are
now available for data transfers.
Note: For more information, see Table
131, TX FIFO High Watermark
Ports 0 - 3 ($0x600 – 0x603), on
page 193 and Table 132, TX FIFO
Low Watermark Register Ports 0 - 3
($0x60A – 0x60D), on page 195.
The port reported by PTPA is updated on
the following rising edge of TFCLK after the
port address on TADR is sampled by the
PHY device.
PTPA is updated on the rising edge of
TFCLK.
Table 3 SPI3 Interface Signal Descriptions (Sheet 4 of 8)
Signal Name Ball
Designator Type Standard Description
MPHY SPHY
Page 42Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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278757, Revision 13.2
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RDAT31
RDAT30
RDAT29
RDAT28
RDAT27
RDAT26
RDAT25
RDAT24
RDAT7_3
RDAT6_3
RDAT5_3
RDAT4_3
RDAT3_3
RDAT2_3
RDAT1_3
RDAT0_3
F24
G24
G23
G22
G21
G20
G19
G18
Output 3.3 V
LVTTL
Receive Data Bus.
RDAT carries payload data and in-band
addresses from the IXF1104 MAC.
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Bits
[31:24]
[7:0] for port 3
RDAT23
RDAT22
RDAT21
RDAT20
RDAT19
RDAT18
RDAT17
RDAT16
RDAT7_2
RDAT6_2
RDAT5_2
RDAT4_2
RDAT3_2
RDAT2_2
RDAT1_2
RDAT0_2
E21
E22
D22
C22
C21
C20
B22
B20
Output 3.3 V
LVTTL
Receive Data Bus.
RDAT carries payload data and in-band
addresses from the IXF1104 MAC.
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Bits
[23:16]
[7:0] for port 2
RDAT15
RDAT14
RDAT13
RDAT12
RDAT11
RDAT10
RDAT9
RDAT8
RDAT7_1
RDAT6_1
RDAT5_1
RDAT4_1
RDAT3_1
RDAT2_1
RDAT1_1
RDAT0_1
F18
E18
E17
F16
E16
D16
C17
A17
Output 3.3 V
LVTTL
Receive Data Bus.
RDAT carries payload data and in-band
addresses from the IXF1104 MAC.
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Bits
[15:8]
[7:0] for port 1
RDAT7
RDAT6
RDAT5
RDAT4
RDAT3
RDAT2
RDAT1
RDAT0
RDAT7_0
RDAT6_0
RDAT5_0
RDAT4_0
RDAT3_0
RDAT2_0
RDAT1_0
RDAT0_0
F14
E14
D14
C13
C14
B14
A14
A15
Output 3.3 V
LVTTL
Receive Data Bus.
RDAT carries payload data and in-band
addresses from the IXF1104 MAC.
Mode
32-bit Multi-PHY
4 x 8 Single-PHY
Bits
[7:0]
[7:0] for port 0
RFCLK RFCLK A19 Input 3.3 V
LVTTL
Receive Clock.
RFCLK is the clock associated with all
receive signals. Data and controls are
driven on the rising edge of RFCLK
(frequency operation range 90 - 133 MHz).
RPRTY_0 RPRTY_0
RPRTY_1
RPRTY_2
RPRTY_3
E15
G16
E20
F20
Output 3.3 V
LVTTL
Receive Parity.
RPRTY indicates odd parity for the RDAT
bus. RPRTY is valid only when a channel
asserts RENB or RSX. Odd parity is the
default configuration; however, even parity
can be selected (see Table 146 on
page 205).
32-bit Multi-PHY mode: RPRTY_0 is the
parity bit for all 32 bits.
4 x 8 Single-PHY mode: Each bit of
RPRTY_0:3 corresponds to the respective
RDAT[3:0]_n channel.
Table 3 SPI3 Interface Signal Descriptions (Sheet 5 of 8)
Signal Name Ball
Designator Type Standard Description
MPHY SPHY
Page 43Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Datasheet
278757, Revision 13.2
17 September 2008
RENB_0 RENB_0
RENB_1
RENB_2
RENB_3
A13
A18
C19
E24
Input 3.3 V
LVTTL
Receive Read Enable.
The RENB signal controls the flow of data
from the receive FIFOs. During data
transfer, RVAL must be monitored as it
indicates if the RDAT[31:0], RPRTY,
RMOD[1:0], RSOP, REOP, RERR, and RSX
are valid. The system may de-assert RENB
at any time if it is unable to accept data from
the IXF1104 MAC. When RENB is sampled
Low, a read is performed from the receive
FIFO and the RDAT[31:0], RPRTY,
RMOD[1:0], RSOP, REOP, RERR, RSX and
RVAL signals are updated on the following
rising edge of RFCLK.
When RENB is sampled High by the PHY
device, a read is not performed, and the
RDAT[31:0], RPRTY, RMOD[1:0], RSOP,
REOP, RERR, RSX, and RVAL signals
remain unchanged on the following rising
edge of RFCLK.
32-bit Multi-PHY Mode: RENB_0 covers all
receive bits.
4 x 8 Single-PHY Mode: The RENB_0:3 bits
correspond to the per-port data and control
signals.
RERR_0 RERR_0
RERR_1
RERR_2
RERR_3
A16
G17
D20
H20
Output 3.3 V
LVTTL
Receive Error.
RERR indicates that the current packet is in
error. RERR is only asserted when REOP is
asserted. Conditions that can cause RERR
to be set include FIFO overflow, CRC error,
code error, and runt or giant packets.
Note: RERR can only be set for these
conditions if bit 0 in Table 146, SPI3
Receive Configuration ($0x701), on
page 205 is set to 1.
RERR is considered valid only when RVAL
is asserted.
32-bit Multi-PHY mode: RERR_0 covers all
32 bits.
4 x 8 Single-PHY mode: The RERR_0:3 bits
correspond to the RDAT[7:0]_n channels.
(n = 0, 1, 2, or 3)
Table 3 SPI3 Interface Signal Descriptions (Sheet 6 of 8)
Signal Name Ball
Designator Type Standard Description
MPHY SPHY
Page 44Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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278757, Revision 13.2
17 September 2008
RVAL_0 RVAL_0
RVAL_1
RVAL_2
RVAL_3
C15
B18
E19
F22
Output 3.3 V
LVTTL
Receive Data Valid.
RVAL indicates the validity of the receive
data signals. RVAL is Low between
transfers and assertion of RSX. It is also
Low when the IXF1104 MAC pauses a
transfer due to an empty receive FIFO.
When a transfer is paused by holding RENB
High, RVAL holds its value unchanged,
although no new data is present on
RDAT[31:0] until the transfer resumes.
When RVAL is High, the RDAT[31:0],
RMOD[1:0], RSOP, REOP, and RERR
signals are valid. When RVAL is Low, the
RDAT[31:0], RMOD[1:0], RSOP, REOP, and
RERR signals are invalid and must be
disregarded.
The RSX signal is valid only when RVAL is
Low.
32-bit Multi-PHY mode: RVAL_0 covers all
receive bits.
4 x 8 Single-PHY mode: The RVAL_0:3 bits
correspond to the per-port data and control
signals.
RSOP_0 RSOP_0
RSOP_1
RSOP_2
RSOP_3
B16
C18
E23
J18
Output 3.3 V
LVTTL
Receive Start of Packet.
RSOP indicates the start of a packet when
asserted with RVAL.
32-bit Multi-PHY mode: RSOP_0 covers all
32 bits.
4 x 8 Single-PHY mode: The RSOP_0:3 bits
correspond to the RDAT[7:0]_n channels.
Table 3 SPI3 Interface Signal Descriptions (Sheet 7 of 8)
Signal Name Ball
Designator Type Standard Description
MPHY SPHY
Page 45Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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REOP_0 REOP_0
REOP_1
REOP_2
REOP_3
C16
D18
C23
J19
Output 3.3 V
LVTTL
Receive End of Packet.
REOP indicates the end of a packet when
asserted with RVAL.
32-bit Multi-PHY mode: REOP_0 covers all
32 bits.
4 x 8 Single-PHY mode: The REOP_0:3 bits
correspond to the RDAT[7:0]_n channels.
RMOD1
RMOD0 NA G13
G14 Output 3.3 V
LVTTL
Receive Word Modulo:
32-bit Multi-PHY mode: RMOD[1:0]
indicates the valid bytes of data in
RDAT[31:0]. During transmission, RMOD is
always “00”, except when the last double-
word is transferred on RDAT[31:0].
RMOD[1:0] specifies the valid packet data
bytes on RDAT[31:0] when REOP is
asserted.
RMOD[1:0] Valid Bytes of RDAT
00 = 4 bytes [31:0]
01 = 3 bytes [31:8]
10 = 2 bytes [31:16]
11 = 1 byte [31:24]
4 x 8 Single-PHY mode: RMOD[1:0] is not
required.
RMOD is considered valid only when RVAL
is simultaneously asserted.
RENB must be asserted for RMOD[1:0] to
be valid.
RSX NA E13 Output 3.3 V
LVTTL
Receive Start of Transfer.
32-bit Multi-PHY mode: RSX indicates when
the in-band port address is present on the
RDAT bus. When RSX is High and RVAL =
0, the value of RDAT[7:0] is the address of
the receive FIFO to be selected.
Subsequent data transfers on RDAT are
from the FIFO specified by this in-band
address. Values of 0, 1, 2, and 3 select the
corresponding port. RSX is ignored when
RVAL is de-asserted.
4 x 8 Single-PHY mode: RSX is ignored.
Table 3 SPI3 Interface Signal Descriptions (Sheet 8 of 8)
Signal Name Ball
Designator Type Standard Description
MPHY SPHY
Page 46Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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17 September 2008
Table 4 SerDes Interface Signal Descriptions
Signal Name Ball Designator Type Standard Description
TX_P_0
TX_P_1
TX_P_2
TX_P_3
Y13
AD13
W16
AC18
Output SerDes Transmit Differential Output, Positive.
TX_N_0
TX_N_1
TX_N_2
TX_N_3
Y14
AD14
Y16
AD18
Output SerDes Transmit Differential Output, Negative.
RX_P_0
RX_P_1
RX_P_2
RX_P_3
P22
V22
T24
U24
Input SerDes Receive Differential Input, Positive.1
RX_N_0
RX_N_1
RX_N_2
RX_N_3
R22
U22
R24
V24
Input SerDes Receive Differential Input, Negative.1
1. Internally terminated differentially with 100 Ω.
Page 47Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Table 5 GMII Interface Signal Descriptions (Sheet 1 of 2)
Signal Name Ball Designator Type Standard Description
TXD7_0
TXD6_0
TXD5_0
TXD4_0
TXD3_0
TXD2_0
TXD1_0
TXD0_0
TXD7_1
TXD6_1
TXD5_1
TXD4_1
TXD3_1
TXD2_1
TXD1_1
TXD0_1
TXD7_2
TXD6_2
TXD5_2
TXD4_2
TXD3_2
TXD2_2
TXD1_2
TXD0_2
TXD7_3
TXD6_3
TXD5_3
TXD4_3
TXD3_3
TXD2_3
TXD1_3
TXD0_3
Y4
AB4
AC3
AB3
AA3
Y3
Y2
Y1
AC9
AD8
AB8
AA7
AD9
AB9
AB7
AC7
AA18
AA20
AB19
AD16
AB23
AB22
AB21
AB20
W14
AA16
Y15
AA14
V17
V16
V15
V14
Output 2.5 V
CMOS
Transmit Data.
Each bus carries eight data bits [7:0] of
the transmitted data stream to the PHY
device.
RGMII Mode: When a port is
configured in copper mode and the
RGMII interface is selected, only bits
TXD[3:0]_n are used. The data is
transmitted on both edges of TXC_0:3.
Fiber Mode: The following signals
have multiplexed functions when a port
is configured in fiber mode:
TXD4_n: TX_DISABLE_0:3
TX_EN_0
TX_EN_1
TX_EN_2
TX_EN_3
AB2
Y8
AC22
V12
Output 2.5 V
CMOS
Transmit Enable.
TX_EN indicates that valid data is
being driven on the corresponding
Transmit Data: TXD_0, TXD_1, TXD_2,
and TXD_3.
TX_ER_0
TX_ER_1
TX_ER_2
TX_ER_3
W1
AD6
AD17
AB13
Output 2.5 V
CMOS
Transmit Error:
TX_ER indicates a transmit error in the
corresponding Transmit Data: TXD_0,
TXD_1, TXD_2, and TXD_3.
TXC_0
TXC_1
TXC_2
TXC_3
AA1
AD7
AC20
AB14
Output 2.5 V
CMOS
Source Synchronous Transmit
Clock.
This clock is supplied synchronous to
the transmit data bus in either RGMII or
GMII mode.
Note: Shares the same balls as RXC
on the RGMII interface.
Note: Refer to the RGMII interface for shared data and clock signals.
Page 48Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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RXD7_0
RXD6_0
RXD5_0
RXD4_0
RXD3_0
RXD2_0
RXD1_0
RXD0_0
RXD7_1
RXD6_1
RXD5_1
RXD4_1
RXD3_1
RXD2_1
RXD1_1
RXD0_1
RXD7_2
RXD6_2
RXD5_2
RXD4_2
RXD3_2
RXD2_2
RXD1_2
RXD0_2
RXD7_3
RXD6_3
RXD5_3
RXD4_3
RXD3_3
RXD2_3
RXD1_3
RXD0_3
AC5
AB5
Y5
Y6
Y7
W7
V7
V8
Y10
AA11
AC11
AD10
W9
W11
Y11
Y9
W20
V19
V20
W22
Y23
Y22
Y21
Y20
T19
T18
T17
T16
W18
Y19
Y18
Y17
Input 2.5 V
CMOS
Receive Data:
Each bus carries eight data bits [7:0] of
the received data stream.
RGMII Mode: When a port ID is
configured in copper mode and the
RGMII interface is selected, only bits
RXD[3:0]_n are used to receive data.
Fiber Mode: The following signals
have multiplexed functions when a port
is configured in fiber mode:
RXD4_n: MOD_DEF_0:3
RXD5_n: TX_FAULT_0:3
RXD6_n: RX_LOS_0:3
RX_DV_0
RX_DV_1
RX_DV_2
RX_DV_3
V5
AB11
Y24
V18
Input 2.5 V
CMOS
Receive Data Valid.
RX_DV indicates that valid data is
being driven on Receive Data:
RXD[7:0]_n.
RX_ER_0
RX_ER_1
RX_ER_2
RX_ER_3
W5
Y12
AA22
U20
Input 2.5 V
CMOS
Receive Error.
RX_ER indicates an error in Receive
Data: RXD[7:0]_n.
CRS_0
CRS_1
CRS_2
CRS_3
AA5
AA9
AB15
AC16
Input 2.5 V
CMOS
Carrier Sense.
CRS indicates the PHY device has
detected a carrier.
RXC_0
RXC_1
RXC_2
RXC_3
V4
AD11
AA24
V23
Input 2.5 V
CMOS
Receiver Reference Clock.
RXC operates at:
125 MHz for 1 Gigabit
Note: Shares the same balls as RXC
on the RGMII interface.
Table 5 GMII Interface Signal Descriptions (Sheet 2 of 2)
Signal Name Ball Designator Type Standard Description
Note: Refer to the RGMII interface for shared data and clock signals.
Page 49Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Table 6 RGMII Interface Signal Descriptions (Sheet 1 of 2)
Signal Name Ball
Designator Type Standard Description
TXC_0
TXC_1
TXC_2
TXC_3
AA1
AD7
AC20
AB14
Output 2.5 V
CMOS
Source Synchronous Transmit Clock.
This clock is supplied synchronous to the transmit
data bus in either RGMII or GMII mode.
TD3_0
TD2_0
TD1_0
TD0_0
TD3_1
TD2_1
TD1_1
TD0_1
TD3_2
TD2_2
TD1_2
TD0_2
TD3_3
TD2_3
TD1_3
TD0_3
AA3
Y3
Y2
Y1
AD9
AB9
AB7
AC7
AB23
AB22
AB21
AB20
V17
V16
V15
V14
Output 2.5 V
CMOS
Transmit Data.
Bits [3:0] are clocked on the rising edge of TXC.
Bits [7:4] are clocked on the falling edge of TXC.
Note: Shares data signals TXD[3:0]_n with the
GMII interface.
TX_CTL_0
TX_CTL_1
TX_CTL_2
TX_CTL_3
AB2
Y8
AC22
V12
Output 2.5 V
CMOS
Transmit Control.
TX_CTL is TX_EN on the rising edge of TXC and a
logical derivative of TX_EN and TX_ER on the
falling edge of TXC.
Note: TX_CTL multiplexes with TX_EN_n on the
GMII interface.
Page 50Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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RXC_0
RXC_1
RXC_2
RXC_3
V4
AD11
AA24
V23
Input 2.5 V
CMOS
Receiver Reference Clock.
Operates at:
125 MHz for 1 Gigabit
25 MHz for 100 Mbps
2.5 MHz for 10 Mbps
Note: Shares the same balls as RXC on the
GMII interface.
RD3_0
RD2_0
RD1_0
RD0_0
RD3_1
RD2_1
RD1_1
RD0_1
RD3_2
RD2_2
RD1_2
RD0_2
RD3_3
RD2_3
RD1_3
RD0_3
Y7
W7
V7
V8
W9
W11
Y11
Y9
Y23
Y22
Y21
Y20
W18
Y19
Y18
Y17
Input 2.5 V
CMOS
Receive Data.
Bits [3:0] are clocked on the rising edge of RXC.
Bits [7:4] are clocked on the falling edge of RXC.
Note: Shares balls with RXD[3:0]_0 on the GMII
interface.
RX_CTL_0
RX_CTL_1
RX_CTL_2
RX_CTL_3
V5
AB11
Y24
V18
Input 2.5 V
CMOS
Receive Control.
RX_CTL is RX_DV on the rising edge of RXC and
a logical derivative of RX_DV and RERR on the
falling edge of RXC.
Note: RX_CTL shares the same balls as RX_DV
on the GMII interface.
Table 6 RGMII Interface Signal Descriptions (Sheet 2 of 2)
Signal Name Ball
Designator Type Standard Description
Page 51Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Table 7 CPU Interface Signal Descriptions (Sheet 1 of 2)
Signal Name Ball
Designator Type Standard Description
UPX_ADD10
UPX_ADD9
UPX_ADD8
UPX_ADD7
UPX_ADD6
UPX_ADD5
UPX_ADD4
UPX_ADD3
UPX_ADD2
UPX_ADD1
UPX_ADD0
T3
U3
V3
V2
V1
U1
T1
R1
P1
N1
P3
Input 2.5V CMOS UPX_ADD is the address bus from the
microprocessor.
UPX_BADD1
UPX_BADD0
W3
T2 Input 2.5V CMOS
16-bit mode: The data word select uses
UPX_BADD1.
8-bit mode: UPX_BADD[1:0] selects the individual
bytes.
UPX_DATA31
UPX_DATA30
UPX_DATA29
UPX_DATA28
UPX_DATA27
UPX_DATA26
UPX_DATA25
UPX_DATA24
UPX_DATA23
UPX_DATA22
UPX_DATA21
UPX_DATA20
UPX_DATA19
UPX_DATA18
UPX_DATA17
UPX_DATA16
UPX_DATA15
UPX_DATA14
UPX_DATA13
UPX_DATA12
UPX_DATA11
UPX_DATA10
UPX_DATA9
UPX_DATA8
UPX_DATA7
UPX_DATA6
UPX_DATA5
UPX_DATA4
UPX_DATA3
UPX_DATA2
UPX_DATA1
UPX_DATA0
L17
J17
H16
J16
M15
N15
K15
H14
K13
G12
K12
G11
H11
G10
K10
M10
N10
J9
H9
L8
N7
L7
L6
P5
K5
M5
N5
L4
M3
L3
K3
L2
Input/
Output 3.3V LVTTL
Data bus.
32-bit mode: Uses [31:0]
16-bit mode: Uses [15:0]
8-bit mode: Uses [7:0]
UPX_CS_L R3 Input 2.5V CMOS Chip Select. Active Low.
UPX_WR_L T4 Input 2.5V CMOS Write Strobe. Active Low.
UPX_RD_L V6 Input 2.5V CMOS Read Strobe. Active Low.
Page 52Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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17 September 2008
UPX_RDY_L M1
Open
Drain
Output*
3.3V LVTTL
Cycle complete indicator.
Active Low.
Note: An external pull-up resistor is required for
proper operation.
Note: *Dual-mode I/O
Normal operation: Open drain output
Boundary Scan Mode: Standard CMOS
output
UPX_WIDTH1
UPX_WIDTH0
T5
U16 Input 2.5V CMOS
Data bus width select.
UPX_WIDTH[1:0] specifies the CPU bus width.
UPX_WIDTH[1:0]
00
01
1x
Mode
8-bit
16-bit
32-bit
Table 7 CPU Interface Signal Descriptions (Sheet 2 of 2)
Signal Name Ball
Designator Type Standard Description
Table 8 Transmit Pause Control Interface Signal Descriptions
Signal Name Ball
Designator Type Standard Description
TXPAUSEADD2
TXPAUSEADD1
TXPAUSEADD0
P21
P20
N20
Input 2.5 V
CMOS
TXPAUSEADD[2:0] is the port selection address
for pause frame insertion.
TXPAUSEFR T20 Input 2.5 V
CMOS TX Pause Interface Strobe.
Page 53Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Datasheet
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17 September 2008
Table 9 Optical Module Interface Signal Descriptions (Sheet 1 of 2)
Signal Name Ball
Designator Type Standard Description
TX_DISABLE_0
TX_DISABLE_1
TX_DISABLE_2
TX_DISABLE_3
AB3
AA7
AD16
AA14
Open
Drain
Output*
2.5 V
CMOS
Transmit Disable:
TX_DISABLE_0:3 outputs disable the Optical
Module Interface transmitter. An external pull-up
resistor usually resident in an optical module is
required for proper operation.
Note: These signals are multiplexed with the
TXD[4]_n bits of the GMII Interface
Note: *Dual-mode I/O
Normal operation: Open drain output
Boundary Scan Mode: Standard CMOS
output
MOD_DEF_0
MOD_DEF_1
MOD_DEF_2
MOD_DEF_3
Y6
AD10
W22
T16
Input 2.5 V
CMOS
MOD_DEF_0:3 inputs determine when an
Optical Module Interface is present.
Note: These signals are multiplexed with the
RXD[4]_n bits of the GMII interface.
RX_LOS_0
RX_LOS_1
RX_LOS_2
RX_LOS_3
AB5
AA11
V19
T18
Input 2.5 V
CMOS
RX_LOS_0:3 inputs determine when the Optical
Module Interface receiver loses synchronization.
Note: These signals are multiplexed with the
RXD[6]_n bits of the GMII interface.
TX_FAULT_0
TX_FAULT_1
TX_FAULT_2
TX_FAULT_3
Y5
AC11
V20
T17
Input 2.5 V
CMOS
TX_FAULT_0:3 inputs determine an Optical
Module Interface transmitter fault.
Note: These signals are multiplexed with the
RXD[5]_n bits of the GMII Interface.
RX_LOS_INT P19
Open
Drain
Output*
2.5 V
CMOS
Receiver Loss of Signal Interrupt.
RX_LOS_INT is an open drain interrupt output to
signal an RX_LOS condition.
Note: An external pull-up resistor is required
for proper operation.
Note: *Dual-mode I/O
Normal operation: Open drain output
Boundary Scan Mode: Standard CMOS
output
TX_FAULT_INT P23
Open
Drain
Output*
2.5 V
CMOS
Transmitter Fault Interrupt.
TX_FAULT_INT is an open drain interrupt output
that signals a TX_FAULT condition.
Note: An external pull-up resistor is
required for proper operation.
Note: *Dual-mode I/O
Normal operation: Open drain output
Boundary Scan Mode: Standard CMOS
output
Page 54Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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278757, Revision 13.2
17 September 2008
MOD_DEF_INT N22
Open
Drain
Output*
2.5 V
CMOS
Module Definition Interrupt.
MOD_DEF_INT is an open drain interrupt output
that signals a MOD_DEF condition.
Note: An external pull-up resistor is
required for proper operation.
Note: *Dual-mode I/O
Normal operation: Open drain output
Boundary Scan Mode: Standard CMOS
output
I2C_CLK L23 Output 2.5 V
CMOS
I2C_CLK is the clock used for the I2C bus
interface.
I2C DATA_0
I2C DATA_1
I2C DATA_2
I2C DATA_3
L24
M24
N24
P24
Input/
Open
Drain
Output*
2.5 V
CMOS
I2C Data Bus.
I2C DATA_0:3 are the data I/Os for the I2C bus
interface.
Note: An external pull-up resistor is
required for proper operation.
Note: *Dual-mode I/O
Normal operation: Input/ open drain
output
Boundary Scan Mode: Standard CMOS
output
Table 9 Optical Module Interface Signal Descriptions (Sheet 2 of 2)
Signal Name Ball
Designator Type Standard Description
Table 10 MDIO Interface Signal Descriptions
Signal Name Ball
Designator Type Standard Description
MDIO V21 Input/
Output
2.5 V
CMOS
MDIO is the management data input and output.
Note: An external pull-up resistor is required for
proper operation.
MDC W24 Output 2.5 V
CMOS MDC is the management clock to external devices.
Table 11 LED Interface Signal Descriptions
Signal Name Ball
Designator Type Standard Description
LED_CLK K24 Output 2.5 V
CMOS LED_CLK is the clock output for the LED block.
LED_DATA M22 Output 2.5 V
CMOS LED_DATA is the data output for the LED block.
LED_LATCH L22 Output 2.5 V
CMOS LED_LATCH is the latch enable for the LED block.
Page 55Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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17 September 2008
Table 12 JTAG Interface Signal Descriptions
Signal Name Ball
Designator Type Standard Description
TCLK J22 Input 3.3 V
LVTTL JTAG Test Clock
TMS H22 Input 3.3 V
LVTTL Test Mode Select
TDI J24 Input 3.3 V
LVTTL Test Data Input
TDO H24 Output 3.3 V
LVTTL Test Data Output
TRST_L J23 Input 3.3 V
LVTTL Test Reset; reset input for JTAG test
Table 13 System Interface Signal Descriptions
Signal Name Ball
Designator Type Standard Description
CLK125 AD19 Input 3.3 V
LVTTL
CLK125 is the input clock to PLL; 125 MHz +/-
50 ppm
SYS_RES_L AD12 Input 2.5 V
CMOS SYS_RES_L is the system hard reset (active Low).
Table 14 Power Supply Signal Descriptions (Sheet 1 of 2)
Signal Name Ball Designator Type Standard Description
GND
A4
B15
D12
F2
F19
H12
J10
K9
K19
L12
M4
M17
N11
P10
R2
R11
R23
U8
U21
W15
AA8
AA21
AC14
A21
B19
D13
F6
F23
H13
J15
K11
K23
L13
M8
M21
N14
P12
R6
R14
T10
U12
W2
W19
AA12
AB12
AC15
B6
D4
D17
F10
H4
H17
K2
K14
L5
L15
M11
N4
N17
P13
R7
R16
T15
U13
W6
W23
AA13
AC6
AC19
B10
D8
D21
F15
H8
H21
K6
K16
L10
L20
M14
N8
N21
P15
R9
R19
U4
U17
W10
AA4
AA17
AC10
AD21
Input – Digital ground
AVDD1P8_1 A5 A20 Input 1.8 V Analog 1.8 V supply
AVDD1P8_2 AB16 T23 Input 1.8 V Analog 1.8 V supply
AVDD2P5_1 AD20 Input 2.5 V Analog 2.5 V supply
AVDD2P5_2 U14 R18 Input 2.5 V Analog 2.5 V supply
Page 56Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Datasheet
278757, Revision 13.2
17 September 2008
4.4 Multiplexed Ball Connections
4.4.1 GMII/RGMII/SerDes/OMI Multiplexed Ball Connections
Table 15 lists the balls used for the line-side interfaces (GMII, RGMII, SerDes/OMI) and
provides a guide to connect these balls. Some of these balls are multiplexed depending on
the mode of operation selected for that port.
Note: Do not connect any balls marked as unused (NC).
VDD
A10
D11
F21
J14
K17
L14
P14
R17
U10
AA6
C12
D15
H10
J20
K21
L16
P16
R21
U15
AA10
D6
D19
H15
K4
L9
P9
R4
T11
W4
AA15
D10
F4
J11
K8
L11
P11
R8
T14
W21
AA19
Input 1.8 V Digital 1.8 V supply
VDD2
B4
F8
J12
M12
B8
F12
M2
B12
H2
M6
D2
H6
M9 Input 3.3 V Digital 3.3 V supply
VDD3
B13
F13
J13
M23
B17
F17
M13
B21
H19
M16
D23
H23
M19 Input 3.3 V Digital 3.3 V supply
VDD4
N13
T13
W17
AC21
N16
U19
AA23
N19
U23
AC13
N23
W13
AC17 Input 2.5 V Digital 2.5 V supply
VDD5
N2
T12
W12
AC12
N6
U2
AA2
N9
U6
AC4
N12
W8
AC8 Input 2.5 V Digital 2.5 V supply
Table 14 Power Supply Signal Descriptions (Sheet 2 of 2)
Signal Name Ball Designator Type Standard Description
Table 15 Line Side Interface Multiplexed Balls (Sheet 1 of 2)
Copper Mode Fiber Mode
Unused Port Ball Designator
GMII Signal RGMII Signal Optical Module/
SerDes Signal
TXC_0:3 TXC_0:3 NC NC AA1 AD7 AC20 AB14
TXD[3:0]_0
TXD[3:0]_1
TXD[3:0]_2
TXD[3:0]_3
TD[3:0]_0
TD[3:0]_1
TD[3:0]_2
TD[3:0]_3
NC NC
AA3
AD9
AB23
V17
Y3
AB9
AB22
V16
Y2
AB7
AB21
V15
Y1
AC7
AB20
V14
TXD4_0:3 NC TX_DISABLE_0:32NC AB3 AA7 AD16 AA14
1. An external pull-up resistor is required with most optical modules.
2. An open drain I/O, external 4.7 k Ω pull-up resistor is required.
Page 57Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Datasheet
278757, Revision 13.2
17 September 2008
4.4.2 SPI3 MPHY/SPHY Ball Connections
Table 16 lists the balls used for the SPI3 Interface and provides a guide to connect these
balls in MPHY and SPHY mode.
TXD[7:5]_0
TXD[7:5]_1
TXD[7:5]_2
TXD[7:5]_3
NC NC NC
Y4
AC9
AA18
W14
AB4
AD8
AA20
AA16
AC3
AB8
AB19
Y15
TX_EN_0:3 TX_CTL_0:3 NC NC AB2 Y8 AC22 V12
TX_ER_0:3 NC NC NC W1 AD6 AD17 AB13
RXC_0:3 RXC_0:3 GND GND V4 AD11 AA24 V23
RXD[3:0]_0
RXD[3:0]_1
RXD[3:0]_2
RXD[3:0]_3
RD[3:0]_0
RD[3:0]_1
RD[3:0]_2
RD[3:0]_3
GND GND
Y7
W9
Y23
W18
W7
W11
Y22
Y19
V7
Y11
Y21
Y18
V8
Y9
Y20
Y17
RXD4_0:3 GND MOD_DEF_0:31GND Y6 AD10 W22 T16
RXD5_0:3 GND TX_FAULT_0:31GND Y5 AC11 V20 T17
RXD6_0:3 GND RX_LOS_0:31GND AB5 AA11 V19 T18
RXD7_0:3 GND GND GND AC5 Y10 W20 T19
RX_DV_0:3 RX_CTL_0:3 GND GND V5 AB11 Y24 V18
RX_ER_0:3 GND GND GND W5 Y12 AA22 U20
CRS_0:3 GND GND GND AA5 AA9 AB15 AC16
COL_0:3 GND GND GND AB6 AB10 AD15 AB17
GND GND RX_P_0:3 GND P22 V22 T24 U24
GND GND RX_N_0:3 GND R22 U22 R24 V24
NC NC TX_P_0:3 NC Y13 AD13 W16 AC18
NC NC TX_N_0:3 NC Y14 AD14 Y16 AD18
NC NC TX_FAULT_INT2NC P23
NC NC RX_LOS_INT2NC P19
NC NC MOD_DEF_INT2NC N22
MDC MDC NC NC W24
MDIO2MDIO2NC NC V21
NC NC I2C_CLK NC L23
NC NC I2C_DATA_0:32NC L24 M24 N24 P24
Table 15 Line Side Interface Multiplexed Balls (Sheet 2 of 2)
Copper Mode Fiber Mode
Unused Port Ball Designator
GMII Signal RGMII Signal Optical Module/
SerDes Signal
1. An external pull-up resistor is required with most optical modules.
2. An open drain I/O, external 4.7 k Ω pull-up resistor is required.
Page 58Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Datasheet
278757, Revision 13.2
17 September 2008
Table 16 SPI3 MPHY/SPHY Interface (Sheet 1 of 2)
SPI3 Signals
Ball Number Comments
MPHY SPHY
TDAT[31:24] TDAT[7:0]_3 F7
G7
F5
G6
G9
G5
G8
G4
MPHY: Consists of a single 32-bit data
bus
SPHY: Separate 8-bit data bus for each
Ethernet port
TDAT[23:16] TDAT[7:0]_2 C8
E8
F9
E7
E10
E6
E9
E5
TDAT[15:8] TDAT[7:0]_1 H3
H1
J3
G2
J2
G1
J1
F1
TDAT[7:0] TDAT[7:0]_0 C6
D1
B5
C3
C5
C2
C4
B3
TFCLK TFCLK D7
To achieve maximum bandwidth, set
TFCLK as follows:
MPHY: 133 MHz
SPHY: 125 MHz.
TPRTY_0 TPRTY_0 D5 MPHY: Use TPRTY_0 as the TPRTY
signal.
SPHY: Each port has its own dedicated
TPRTY_n signal.
GND TPRTY_1 G3
GND TPRTY_2 B9
GND TPRTY_3 J6
TENB_0 TENB_0 B7 MPHY: Use TENB_0 as the TENB
signal.
SPHY: Each port has its own dedicated
TENB_n signal.
VDD2 TENB_1 E2
VDD2 TENB_2 C9
VDD2 TENB_3 J4
TERR_0 TERR_0 A8 MPHY: Use TERR_0 as the TERR
signal.
SPHY: Each port has its own dedicated
TERR_n signal
GND TERR_1 K1
GND TERR_2 E11
GND TERR_3 J8
TSOP_0 TSOP_0 C7 MPHY: Use TSOP_0 as the TSOP
signal.
SPHY: Each port has a dedicated
TSOP_n signal.
GND TSOP_1 E3
GND TSOP_2 C10
GND TSOP_3 J5
TEOP_0 TEOP_0 A7 MPHY: Use TEOP_0 as the TEOP
signal.
SPHY: Each port has a dedicated
TEOP_n signal.
GND TEOP_1 F3
GND TEOP_2 E4
GND TEOP_3 H5
TMOD[1:0] GND D9 A6 TSX and TMOD[1:0] are only applicable
in MPHY mode.
TSX GND E1
TADR[1:0] TADR[1:0] A12 A11 Used to address port for PTPA signal.
PTPA PTPA B11 PTPA can be used in MPHY and SPHY
modes.
DTPA_0:3 DTPA_0:3 D3 L1 A9 J7 DTPA is available on a per-port basis in
both MPHY and SPHY modes.
STPA NC C11 STPA is only applicable in MPHY mode.
Page 59Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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RDAT[31:24] RDAT[7:0]_3 F24
G21
G24
G20
G23
G19
G22
G18
MPHY: Consists of a single 32 bit data
bus.
SPHY: Separate 8-bit data bus for each
Ethernet port.
RDAT[23:16] RDAT[7:0]_2 E21
C21
E22
C20
D22
B22
C22
B20
RDAT[15:8] RDAT[7:0]_1 F18
E16
E18
D16
E17
C17
F16
A17
RDAT[7:0] RDAT[7:0]_0 F14
C14
E14
B14
D14
A15
C13
A14,
RFCLK RFCLK A19
To achieve maximum bandwidth, set
RFCLK as follows:
MPHY: 133 MHz.
SPHY: 125 MHz.
RPRTY_0 RPRTY_0 E15 MPHY: Use RPRTY_0 as the RPRTY
signal.
SPHY: Each port has a dedicated
RPRTY_n signal.
NC RPRTY_1 G16
NC RPRTY_2 E20
NC RPRTY_3 F20
RENB_0 RENB_0 A13 MPHY: Use RENB_0 as the RENB
signal.
SPHY: Each port has a dedicated
RENB_n signal
VDD2 RENB_1 A18
VDD2 RENB_2 C19
VDD2 RENB_3 E24
RERR_0 RERR_0 A16 MPHY: Use RERR_0 as the RERR
signal.
SPHY: Each port has a dedicated
RERR_n signal
NC RERR_1 G17
NC RERR_2 D20
NC RERR_3 H20
RVAL_0 RVAL_0 C15 MPHY: Use RVAL_0 as the RVAL
signal.
SPHY: Each port has a dedicated
RVAL_n signal.
NC RVAL_1 B18
NC RVAL_2 E19
NC RVAL_3 F22
RSOP_0 RSOP_0 B16 MPHY: Use TSOP_0 as the TSOP
signal.
SPHY: Each port has a dedicated
TSOP_n signal.
NC RSOP_1 C18
NC RSOP_2 E23
NC RSOP_3 J18
REOP_0 REOP_0 C16 MPHY: Use TEOP_0 as the TEOP
signal.
SPHY: Each port has a dedicated
TEOP_n signal.
NC REOP_1 D18
NC REOP_2 C23
NC REOP_3 J19
RMOD[1:0] NC G13 G14 RSX and RMOD[1:0] are applicable
only in MPHY mode.
RSX NC E13
Table 16 SPI3 MPHY/SPHY Interface (Sheet 2 of 2)
SPI3 Signals
Ball Number Comments
MPHY SPHY
Page 60Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
4.5 Ball State During Reset
Table 17 Definition of Output and Bi-directional Balls During Hardware Reset
(Sheet 1 of 2)
Interface Ball Name Ball Reset State Comment
SPI3
DTPA_0:3 0x0 –
STPA 0x0 –
PTPA 0x0 –
RDAT[31:0] 0x00000000 –
RVAL_0:3 0x0 –
RERR_0:3 0x0 –
RPRTY_0:3 0x0 –
RMOD[1:0] 0x0 –
RSX 0x0 –
RSOP_0:3 0x0 –
REOP_0:3 0x0 –
JTAG TDO 0x0 –
MDIO MDIO High Z Bi-directional
MDC 0x0 –
CPU UPX_DATA[31:0] High Z Bi-directional
UPX_RDY_L 0X1 Open-drain output, requires an external pull-up
LED
LED_CLK 0x0 –
LED_DATA 0x0 –
LED_LATCH 0x0 –
GMII/RGMII
TXC_0:3 High Z Fiber mode is the default. Copper interfaces are
disabled.
TXD[7:0]_0 High Z Fiber mode is the default.
Bit 4 is driven by the optical module as MOD_DEF_0.
TXD[7:0]_1 High Z Fiber mode is the default.
Bit 4 is driven by the optical module as MOD_DEF_1.
TXD[7:0]_2 High Z Fiber mode is the default.
Bit 4 is driven by the optical module as MOD_DEF_2.
TXD[7:0]_3 High Z Fiber mode is the default.
Bit 4 is driven by the optical module as MOD_DEF_3.
TX_EN_0:3 High Z Fiber mode is the default.
Copper interfaces are disabled.
TX_ER_0:3 High Z Fiber mode is the default.
Copper interfaces are disabled.
RGMII TX_CTL_0:3 High Z Fiber mode is the default.
Copper interfaces are disabled.
SerDes TX_P_0:3 0x0 –
TX_N_0:3 0x0 –
Note: Z = High impedance.
Page 61Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
4.6 Power Supply Sequencing
Follow the power-up and power-down sequences described in this section to ensure correct
IXF1104 MAC operation. The sequence described in Section 4.6 covers all IXF1104 MAC
digital and analog supplies.
Caution: Failure to follow the sequence described in this section might damage the IXF1104 MAC.
4.6.1 Power-Up Sequence
Ensure that the 1.8 V analog and digital supplies are applied and stable prior to application
of the 2.5 V analog and digital supplies.
4.6.2 Power-Down Sequence
Remove the 2.5 V supplies prior to removing the 1.8 V power supplies (the reverse of the
power-up sequence).
Caution: Damage can occur to the ESD structures within the analog I/Os if the 2.5 V digital and
analog supplies exceed the 1.8 V digital and analog supplies by more than 2.0 V during
power-up or power-down.
Figure 5 and Table 18 provide the IXF1104 MAC power supply sequencing.
Optical
Module
TX_FAULT_INT High Z Open-drain output, requires external pull-up.
RX_LOS_INT High Z Open-drain output, requires external pull-up.
MOD_DEF_INT High Z Open-drain output, requires external pull-up.
I2C_CLK 0x1 –
I2C_DATA_0:3 0xF Open-drain output, requires external pull-up.
Table 17 Definition of Output and Bi-directional Balls During Hardware Reset
(Sheet 2 of 2)
Interface Ball Name Ball Reset State Comment
Note: Z = High impedance.
Figure 5 Power Supply Sequencing
Time
t=0
1.8 V Supplies Stable 2.5 V Supplies Stable
Sys_Res
Apply VDD, AVDD1P8_1,
and AVDD1P8_2
Apply VDD4, VDD5,
AVDD2P5_1 and
AVDD2P5_2
Note: The 3.3 V supply (VDD2 and VDD3) can be applied at any point during this sequence.
Page 62Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
IXF1104 MAC
Datasheet
278757, Revision 13.2
17 September 2008
4.7 Pull-Up/Pull-Down Ball Guidelines
The signals shown in Table 19 require the addition of a pull-up or pull-down resistor to the
board design for normal operation. Any balls marked as unused (NC) should be
unconnected.
4.8 Analog Power Filtering
Table 20 illustrates an analog power supply filter network and Table 20 lists the analog
power balls.
Table 18 Power Supply Sequencing
Power Supply Power-Up Order Time Delta to
Next Supply1Notes
VDD, AVDD1P8_1,
AVDD1P8_2 First 0 1.8 V supplies
VDD4, VDD5,
AVDD2P5_1,
AVDD2P5_2
Second 10 µs 2.5 V supplies
1. The value of 10 µs given is a nominal value only. The exact time difference between the application of the
2.5 V analog supply is determined by a number of factors, depending on the power management method
used.
Note: To avoid damage to the IXF1104 MAC, the TXAV25 supply must not exceed the VDD supply by more
than 2 V at any time during the power-up or power-down sequence.
Note: The 3.3 V supply (VDD2 and VDD3) can be applied at any point during this sequence.
Table 19 Pull-Up/Pull-Down and Unused Ball Guidelines
Pin Name Pull-Up/Pull-Down Comments
TX_FAULT_INT Pull-up 4.7 k Ω to 2.5 V. Optical module signal with open-drain I/O.
RX_LOS_INT Pull-up 4.7 k Ω to 2.5 V. Optical module signal with open-drain I/O.
MOD_DEF_INT Pull-up 4.7 k Ω to 2.5 V. Optical module signal with open-drain I/O.
TDI Pull-up 10 k Ω to 3.3 V. JTAG test pin.
TDO Pull-up 10 k Ω to 3.3 V. JTAG test pin.
TMS Pull-up 10 k Ω to 3.3 V. JTAG test pin.
TCLK Pull-up 10 k Ω to 3.3 V. JTAG test pin.
TRST_L Pull-down 10 k Ω to ground. JTAG test pin.
MDIO Pull-up 4.7 k Ω to 2.5 V
UPX_RDY_L Pull-up 4.7 k Ω to 3.3 V
I2C_DATA_0:3 Pull-up 4.7 k Ω to 2.5 V
TX_DISABLE_0:3 Pull-up 4.7 k Ω to 2.5 V
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Figure 6 Analog Power Supply Filter Network
R
2.5 V or 1.8 V
VDD Analog
Power Ball
0.1 µF 0.1 µF
FB 100/100 MHz
Table 20 Analog Power Balls
Signal Name Ball
Designator Comments
AVDD1P8_1 A5 A20 Need to provide a filter (see Figure 6).
R: AVDD1P8_1 and AVDD2P5_1 = 5.6 Ω resistor.
AVDD2P5_1 AD20
AVDD1P8_2 AB16 T23 Need to provide a filter (see Figure 6).
R: AVDD1P8_2 and AVDD2P5_2 = 1.0 Ω resistor.
AVDD2P5_2 U14 R18
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5.0 Functional Descriptions
5.1 Media Access Controller (MAC)
The IXF1104 MAC main functional block consists of four independent 10/100/1000 Mbps
Ethernet MACs, which support interfaces for fiber and copper connectivity.
• Copper Mode:
— RGMII for 10/100/1000 Mbps full-duplex operation and 10/100 Mbps half-duplex
operation
— GMII for 1000 Mbps full-duplex operation
• Fiber Mode:
— Integrated SerDes/OMI interface for direct connection to optical modules
— 1000 Mbps full-duplex operation in fiber mode
The following features support copper and fiber modes:
• Programmable Options:
— Automatic padding of transmitted packets that are less than the minimum frame
size
— Broadcast, multicast, and unicast address filtering on frames received
— Filter and drop packets with errors
— Pre-padded RX frames with two bytes (aligns the Ethernet payload on SPI3 and in
network processor memories)
— Remove CRC from RX frames
— Append CRC to transmitted frames
• Performance Monitoring and Diagnostics:
— Loopback modes
— Detection of runt and overly large packets
— Cyclic Redundancy Check (CRC) calculation and error detection
— RMON statistics for dropped packets, packets with errors, etc.
• Compliant with IEEE Spec 802.3x standard for flow control
— Receive and execute PAUSE Command Frames
• Support for non-standard packet sizes up to 10 KB including loss-less flow control
Note: The IXF1104 MAC does not support 10/100 Mbps operation when configured in GMII mode.
The IXF1104 MAC is fully integrated, designed for use with Ethernet 802.3 frame types, and
compliant to all of the IEEE 802.3 MAC requirements.
The IXF1104 MAC adds preamble and Start-of-Frame Delimiter (SFD) to all frames sent to it
(transmit path) and removes preamble and SFD on all frames received by it (receive path).
A CRC check is also applied to all transmit and receive packets. CRC is optionally
appended to transmit packets. CRC is removed optionally from receive packets after
validation, and is not forwarded to SPI3. Packets with a bad CRC are marked, counted in
the statistics block, and may be optionally dropped. A bad packet may be signaled with
RERR on the SPI3 interface if it is not dropped.
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The IXF1104 MAC operates only in full-duplex mode at 1000 Mbps rates on both SerDes
and GMII interface connections. The IXF1104 MAC is capable of operation at 1000 Mbps,
full-duplex in RGMII mode, and at full-duplex and half-duplex operation for 10/100 Mbps
links.
5.1.1 Features for Fiber and Copper Mode
Section 5.1.1.1 through Section 5.1.1.4 cover IXF1104 MAC functions that are independent
of the line-side interface.
5.1.1.1 Padding of Undersized Frames on Transmit
The padding feature allows Ethernet frames smaller than 64 bytes to be transferred from
the SPI3 interface to the TX MAC and padded up to 64 bytes automatically by the MAC.
This feature is enabled by setting bit 7 of the Diverse Config Write ($ Port_Index + 0x18).
Note: When the user selects the padding function, the MAC core adds an automatically calculated
CRC to the end of the transmitted packet.
5.1.1.2 Automatic CRC Generation
Automatic CRC Generation is used in conjunction with the padding feature to generate and
append a correct CRC to any transmit frame. This feature is enabled by setting bit 6 of the
Diverse Config Write ($ Port_Index + 0x18).
5.1.1.3 Filtering of Receive Packets
This feature allows the IXF1104 MAC to filter receive packets under various conditions and
drop the packets through an interaction with the Receive FIFO control.
5.1.1.3.1 Filter on Unicast Packet Match
This feature is enabled when bit 0 of the RX Packet Filter Control ($ Port_Index + 0x19) = 1.
Any frame received in this mode that does not match the Station Address (MAC address) is
marked by the IXF1104 MAC to be dropped. The frame is dropped if the appropriate bit in
the RX FIFO Errored Frame Drop Enable ($0x59F) = 1. Otherwise, the frame is sent out the
SPI3 interface and may optionally be signaled with an RERR (see bit 0 in Table 146, SPI3
Receive Configuration ($0x701), on page 205).
When bit 0 of the RX Packet Filter Control ($ Port_Index + 0x19) = 0, all unicast frames are
sent out the SPI3 interface.
Note: The VLAN filter overrides the unicast filter. Therefore, a VLAN frame cannot be filtered
based on the unicast address.
5.1.1.3.2 Filter on Multicast Packet Match
This feature is enabled when bit 1 of the RX Packet Filter Control ($ Port_Index + 0x19) = 1.
Any frame received in this mode that does not match the Port Multicast Address (reserved
multicast address recognized by IXF1104 MAC) is marked by the MAC to be dropped. The
frame is dropped if the appropriate bit in the RX FIFO Errored Frame Drop Enable ($0x59F)
= 1. Otherwise, the frame is sent out the SPI3 interface and may optionally be signaled with
an RERR (see bit 0 in Table 146, SPI3 Receive Configuration ($0x701), on page 205).
When bit 1 of the RX Packet Filter Control ($ Port_Index + 0x19) = 0, all multicast frames
are sent out the SPI3 interface.
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5.1.1.3.3 Filter Broadcast Packets
This feature is enabled when bit 2 of the RX Packet Filter Control ($ Port_Index + 0x19) = 1.
Any broadcast frame received in this mode is marked by the MAC to be dropped. The frame
is dropped if the appropriate bit in the RX FIFO Errored Frame Drop Enable ($0x59F) = 1.
Otherwise, the frame is sent out the SPI3 interface and may optionally be signaled with an
RERR (see bit 0 in Table 146, SPI3 Receive Configuration ($0x701), on page 205).
When bit 2 of the RX Packet Filter Control ($ Port_Index + 0x19) = 0, all broadcast frames
are sent out the SPI3 interface.
5.1.1.3.4 Filter VLAN Packets
This feature is enabled when bit 3 of the RX Packet Filter Control ($ Port_Index + 0x19) = 1.
VLAN frames received in this mode are marked by the MAC to be dropped. The frame is
dropped if the appropriate bit in the RX FIFO Errored Frame Drop Enable ($0x59F) = 1.
Otherwise, the VLAN frame is sent out the SPI3 interface and may optionally be signaled
with an RERR (see bit 0 in Table 146, SPI3 Receive Configuration ($0x701), on page 205).
When bit 3 of the RX Packet Filter Control ($ Port_Index + 0x19) = 0, all VLAN frames are
sent out the SPI3 interface.
5.1.1.3.5 Filter Pause Packets
This feature is enabled when bit 4 of the RX Packet Filter Control ($ Port_Index + 0x19) = 0.
Pause frames received in this mode are marked by the MAC to be dropped. The frame is
dropped if the appropriate bit in the RX FIFO Errored Frame Drop Enable ($0x59F) = 1.
Otherwise, the pause frame is sent out the SPI3 interface and may optionally be signaled
with an RERR (see bit 0 in Table 146, SPI3 Receive Configuration ($0x701), on page 205).
When bit 4 of the RX Packet Filter Control ($ Port_Index + 0x19) = 1, all pause frames are
sent out the SPI3 interface.
Note: Pause packets are not filtered if flow control is disabled in the FC Enable ($ Port_Index +
0x12).
5.1.1.3.6 Filter CRC Error Packets
This feature is enabled when bit 5 of the RX Packet Filter Control ($ Port_Index + 0x19) = 0.
Frames received with an errored CRC are marked as bad frames and may optionally be
dropped in the RX FIFO. Otherwise, the frames are sent to the SPI3 interface and may be
optionally signaled with an RERR (see Table 21, CRC Errored Packets Drop Enable
Behavior, on page 67).
When the CRC Error Pass Filter bit = 0 (RX Packet Filter Control ($ Port_Index + 0x19)), it
takes precedence over the other filter bits. Any packet (Pause, Unicast, Multicast or
Broadcast packet) with a CRC error will be marked as a bad frame when the CRC Error
Pass Filter bit = 0.
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5.1.1.4 CRC Error Detection
Frames received by the MAC are checked for a correct CRC. When an incorrect CRC is
detected on a received frame, the RX FCSError RMON statistic counter increments for each
CRC errored frame. Received frames with CRC errors may optionally be dropped in the RX
FIFO (refer to Section 5.1.1.3.6, Filter CRC Error Packets, on page 66). Otherwise, the
frames are sent to the SPI3 interface and may be dropped by the switch or system
controller.
Frames transmitted by the MAC are also checked for correct CRC. When an incorrect CRC
is detected on a transmitted frame, the TX CRCError RMON statistic counter increments for
each incorrect frame.
5.1.2 Flow Control
Flow Control is an IEEE 802.3x-defined mechanism for one network node to request that its
link partner take a temporary “Pause” in packet transmission. This allows the requesting
network node to prevent FIFO overruns and dropped packets, by managing incoming traffic
to fit its available memory. The temporary pause allows the device to process packets
already received or in transit, thus freeing up the FIFO space allocated to those packets.
The IXF1104 MAC MAC implements the IEEE 802.3x standard RX FIFO threshold-based
Flow Control in copper and fiber modes. When appropriately programmed, the MAC can
both generate and respond to IEEE standard pause frames in full-duplex operation. The
IXF1104 MAC also supports externally triggered flow control through the Transmit Pause
Control interface.
Table 21 CRC Errored Packets Drop Enable Behavior
CRC Error
Pass1
RX FIFO
ErroredFrame
Drop Enable2
RERR
Enable3Actions
1xx
When CRC Errored PASS = 1, CRC errored packets
are not filtered and are passed to the SPI3 interface.
They are not marked as bad, cannot be dropped, and
cannot be signaled with RERR.
001
Packets are marked as bad but not dropped in the
RX FIFO. These packets are sent to the SPI3
interface, and are signaled with an RERR to the
switch or Network Processor.
000
Packets are marked as bad but not dropped in the
RX FIFO. These packets are sent to the SPI3
interface, and are not signaled with an RERR.
01x
CRC errored packets are marked as bad, dropped in
the RX FIFO, and never appear at the SPI3 interface.
Note: Packet sizes above the RX FIFO Transfer
Threshold (see Table 127 through Table 130)
cannot be dropped in the RX FIFO and are
passed to the SPI3 interface. These packets
can optionally be signaled with RERR on the
SPI3 interface if the RERR Enable bit = 1.
1. See Table 90, RX Packet Filter Control ($ Port_Index + 0x19), on page 164.
2. See Table 122, RX FIFO Errored Frame Drop Enable ($0x59F), on page 188.
3. See Table 146, SPI3 Receive Configuration ($0x701), on page 205.
Note: x = “DON’T CARE”
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In half-duplex operation, the MAC generates collisions instead of sending pause frames to
manage the incoming traffic from the link partner
5.1.2.1 802.3x Flow Control (Full-Duplex Operation)
The IEEE 802.3x standard identifies four options related to system flow control:
• No Pause
• Symmetric Pause (both directions)
• Asymmetric Pause (Receive direction only)
• Asymmetric Pause (Transmit direction only)
The IXF1104 MAC supports all four options on a per-port basis. Bits 2:0 of the Table 83 on
page 160 provide programmable control for enabling or disabling flow control in each
direction independently.
The IEEE 802.3x flow control mechanism is accomplished within the MAC sublayer, and is
based on RX FIFO thresholds called watermarks. The RX FIFO level rises and falls as
packets are received and processed. When the RX FIFO reaches a watermark (either
exceeding a High or dropping below a Low after exceeding a High), the IXF1104 MAC
control sublayer signals an internal state machine to transmit a PAUSE frame. The FIFOs
automatically generate PAUSE frames (also called control frames) to initiate the following:
• Halt the link partner when the High watermark is reached.
• Restart the link partner when the data stored in the FIFO falls below the Low watermark.
Figure 7 illustrates the IEEE 802.3 FIFO flow control functions.
5.1.2.1.1 Pause Frame Format
PAUSE frames are MAC control frames that are padded to the minimum size (64 bytes).
Figure 8 and Figure 9 illustrate the frame format and contents.
Figure 7 Packet Buffering FIFO
MDI
High Watermark
Data Flow
MAC Transfer Threshold
Low Watermark
High Watermark Data Flow
Low Watermark
RX FIFO High
TXPAUSEFR (External
Strobe) 802.3x Pause Frame Generation
TX FIFO TX Side
MAC
RX FIFO
802.3 Flow
Control
RX Side
MAC
SPI3 Interface
B3231-01
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An IEEE 802.3 MAC PAUSE frame is identified by detecting all of the following:
• OpCode of 00-01
• Length/Type field of 88-08
• DA matching the unique multicast address (01-80-C2-00-00-01)
XOFF. A PAUSE frame informs the link partner to halt transmission for a specified length of
time. The PauseLength octets specify the duration of the no-transmit period. If this time is
greater than zero, the link partner must stop sending any further packets until this time has
elapsed. This is referred to as XOFF.
XON. The MAC continues to transmit PAUSE frames with the specified Pause Length as
long as the FIFO level exceeds the threshold. If the FIFO level falls below the threshold
before the Pause Length time expires, the MAC sends another PAUSE frame with the
Pause Length time specified as zero. This is referred to as XON and informs the link partner
to resume normal transmission of packets.
5.1.2.1.2 Pause Settings
The MAC must send PAUSE frames repeatedly to maintain the link partner in a Pause state.
The following two inter-related variables control this process:
• Pause Length is the amount of time, measured in multiples of 512 bit times, that the
MAC requests the link partner to halt transmission for.
Figure 8 Ethernet Frame Format
Number of bytes
Note:
!""# $ % !&"#
Figure 9 PAUSE Frame Format
B3218-02
DA* or
01-80-
C2-00-
00-01
SA 88-08 FCS
S
F
D
Preamble
71 4662
Pause
Opcode
(00-01)
Pause
Length
22
46
Pad
(with 0s)
42
64 Bytes
Number of bytes
Note: In the IXF1104 architecture, the TX block of the MAC sets this as the pause multicast address.
The RX interface of the MAC will process this as the pause multicast or the MAC address.
B3218-03
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• Pause Threshold is the amount of time, measured in multiples of 512 bit times, prior to
the expiration of the Pause Length that the MAC transmits another Pause frame to
maintain the link partner in the pause state.
The transmitted Pause Length in the IXF1104 MAC is set by the Table 74 on page 157.
The IXF1104 MAC PAUSE frame transmission interval is set by the Table 79 on page 158.
5.1.2.1.3 Response to Received PAUSE Command Frames
When Flow Control is enabled in the receive direction (bit 0 in the FC Enable ($ Port_Index
+ 0x12)), the IXF1104 MAC responds to PAUSE Command frames received from the link
partner as follows:
1. The IXF1104 MAC checks the entire frame to verify that it is a valid PAUSE control
frame addressed to the Multicast Address 01-80-C2-00-00-01 (as specified in IEEE
802.3, Annex 31B) or has a Destinations Address matching the address programmed in
the Station Address ($ Port_Index +0x00 – +0x01).
2. If the PAUSE frame is valid, the transmit side of the IXF1104 MAC pauses for the
required number of PAUSE Quanta, as specified in IEEE 802.3, Clause 31.
3. PAUSE does not begin until completion of the frame currently being transmitted.
The IXF1104 MAC response to valid received PAUSE frames is independent of the PAUSE
frame filter settings. Refer to Section 5.1.1.3.5, Filter Pause Packets, on page 66 for
additional details.
Note: Pause packets are not filtered if flow control is disabled in bit 0 of the FC Enable ($
Port_Index + 0x12).
5.1.2.1.4 Half-Duplex Operation
Transmit flow control is implemented only in half-duplex operation. Upon entering the flow
control state, the MAC generates a collision for all subsequent receive packets until exiting
the flow control state. Any receive packet in progress when the MAC enters the flow control
state will not be collided with but could be lost due if there is insufficient FIFO depth to
complete packet reception. Bit 2 of the FC Enable ($ Port_Index + 0x12) enables the
transmit flow control function.
5.1.2.1.5 Transmit Pause Control Interface
The Transmit Pause Control interface allows an external device to trigger the generation of
pause frames. The Transmit Pause Control interface is completely asynchronous. It
consists of three address signals (TXPAUSEADD[2:0]) and a strobe signal (TXPAUSEFR).
The required address for this interface operation is placed on the TXPAUSEADD[2:0]
signals and the TXPAUSEFR is pulsed High and returned Low. Refer to Figure 10, Transmit
Pause Control Interface, on page 71 and Table 54, Transmit Pause Control Interface Timing
Parameters, on page 144. Table 22 shows the valid decodes for the TXPAUSEADD[2:0]
signals. Figure 10 illustrates the transmit pause control interface.
Note: Flow control must be enabled in the FC Enable ($ Port_Index + 0x12) for Transmit Pause
Control interface operation.
Note: There are two additional decodes provided that allow the user to generate either an XOFF
frame or XON frame from all ports simultaneously.
The default pause quanta for each port is held by the FC TX Timer Value ($ Port_Index +
0x07)). The default value of this register is 0x05E after reset is applied.
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5.1.3 Mixed-Mode Operation
The IXF1104 MAC gives the user the option of configuring each port for 10/100 Mbps half-
duplex copper, 10/100/1000 Mbps full-duplex copper, or 1000 Mbps full-duplex fiber
operation. This gives the IXF1104 MAC the ability to support both copper and fiber
operation line-side interfaces operating at the same time within a single device. (Refer to
Table 15, Line Side Interface Multiplexed Balls, on page 56.)
Table 22 Valid Decodes for TXPAUSEADD[2:0]
TXPAUSEADD_2:0 Operation of TX Pause Control Interface
0x0 Transmits a PAUSE frame on every port with a pause_time = ZERO (XON)
(Cancels all previous pause commands).
0x1 Transmits a PAUSE frame on port 0 with pause_time equal to the value programmed
in the port 0 FC TX Timer Value ($ Port_Index + 0x07) (XOFF).
0x2 Transmits a PAUSE frame on port 1 with pause_time equal to the value programmed
in the port 1 FC TX Timer Value ($ Port_Index + 0x07) (XOFF).
0x3 Transmits a PAUSE frame on port 2 with pause_time equal to the value programmed
in the port 2 FC TX Timer Value ($ Port_Index + 0x07) (XOFF).
0x4 Transmits a PAUSE frame on port 3 with pause_time equal to the value programmed
in the port 3 FC TX Timer Value ($ Port_Index + 0x07) (XOFF).
0x5 to 0x6 Reserved. Do not use these addresses. The TX Pause Control interface will not
operate under these conditions.
0x7 Transmits a PAUSE frame on every port with pause_time equal to the value
programmed in the FC TX Timer Value ($ Port_Index + 0x07) for each port (XOFF).
Figure 10 Transmit Pause Control Interface
B3234-01
TXPAUSEFR
TXPAUSEADD0
TXPAUSEADD1
TXPAUSEADD2
This example shows the following conditions:
Strobe 1:
Port 0: Transmit Pause Packet (XOFF)
Strobe 2:
All Ports: Transmit Pause Packet with pause_time = 0 (XON)
Strobe 3:
Port 3: Transmit Pause Packet (XOFF)
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The IXF1104 MAC provides complete flexibility in line-side connectivity by offering RGMII,
integrated SerDes, and GMII.
5.1.3.1 Configuration
The memory maps (Table 58, MAC Control Registers ($ Port Index + Offset), on page 149
through Table 68, Optical Module Registers ($ 0x799 - 0x79F), on page 155) are logically
split into the following two distinct regions:
• Per-Port Registers
• Global Registers
To achieve a desired configuration for a given port, the relevant per-port registers must be
configured correctly by the user. The Table 58 through Table 68 also contain registers that
affect the operation of all ports, such as the SPI3 interface configuration.
See Section 8.0, Register Set, on page 148 for a complete description of IXF1104 MAC
configuration and status registers. The Register Maps (Table 58 through Table 68) present a
summary of important configuration registers.
Note: The initialization sequence provided in Section 6.1, Change Port Mode Initialization
Sequence, on page 124 must be followed for proper configuration of the IXF1104 MAC.
5.1.3.2 Key Configuration Registers
The following key registers select the operational mode of a given port:
Table 23 Operational Mode Configuration Registers (Sheet 1 of 2)
Register Name Register
Address Description
Desired Duplex
($ Port_Index +
0x02)
0x002 – Port 0
0x082 – Port 1
0x102 – Port 2
0x182 – Port 3
The Table 70 on page 156 defines whether a port is to be configured for
full-duplex or half-duplex operation.
Note: Half-duplex operation is only valid for 10/100 speeds where the
RGMII line interface has been selected.
MAC IF Mode
and RGMII
Speed ($
Port_Index +
0x10)
0x010 – Port 0
0x090 – Port 1
0x110 – Port 2
0x190 – Port 3
The Table 81 on page 159 determines the MAC operational frequency
and mode for a given port.
Note: Set the Table 151 on page 210 to 0x0 prior to any change in
the register value. This ensures that a change in the MAC
clock frequency is controlled correctly. If the Clock and
Interface Mode Change Enable Ports 0 - 3 ($0x794) is not
used correctly, the IXF1104 MAC may not be configured to the
proper mode.
Note: The initialization sequence provided in Section 6.1, Change Port Mode Initialization Sequence, on
page 124 must be followed for proper configuration of the IXF1104 MAC.
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5.1.4 Fiber Mode
When the IXF1104 MAC is configured for fiber mode, the TX Data path from the MAC is an
internal
10-bit interface as described in the IEEE 802.3z specification. It is connected directly to an
internal SerDes block for serialization/deserialization and transmission/reception on the
fiber medium to and from the link partner.
The MAC contains all of the PCS (8B/10B encoding and 10B/8B decoding) required to
encode and decode the data. The MAC also supports auto-negotiation per the IEEE 802.3z
specification via access to the TX Config Word ($ Port_Index + 0x17), RX Config Word ($
Port_Index + 0x16), and Diverse Config Write ($ Port_Index + 0x18).
When configured for fiber mode, the full set of Optical Module interface control and status
signals is presented through re-use of GMII signals on a per-port basis (see 4.4, Multiplexed
Ball Connections, on page 56). Fiber mode supports only full-duplex Gigabit operation.
5.1.4.1 Fiber Auto-Negotiation
Auto-negotiation is performed by using the TX Config Word ($ Port_Index + 0x17), RX
Config Word ($ Port_Index + 0x16), and Diverse Config Write ($ Port_Index + 0x18). When
autoneg_enable (Diverse Config Write ($ Port_Index + 0x18)) is set, the IXF1104 MAC
performs hardware-defined auto-negotiation with the TX Config Word ($ Port_Index + 0x17)
used as an Auto-Negotiation Advertisement ($ Port Index + 0x64) and the RX Config Word
($ Port_Index + 0x16) used as an Auto-Negotiation Link Partner Base Page Ability ($ Port
Index + 0x65).
Note: While the MAC supports auto-negotiation functions, the IXF1104 MAC does not
automatically configure the MAC or other device blocks to be consistent with the auto-
negotiation results. This configuration is done by the user and system software.
Port Enable
($0x500)
0x500
Bit 0 – Port 0
Bit 1 – Port 1
Bit 2 – Port 2
Bit 3 – Port 3
Each Port Enable ($0x500) bit relates to a port. Set the appropriate bit
to 0x1 to enable a port. This should be the last step in the configuration
process for a port.
Interface Mode
($0x501)
0x501
Bit 0 – Port 0
Bit 1 – Port 1
Bit 2 – Port 2
Bit 3 – Port 3
The Interface Mode ($0x501) selects whether a port operates with a
copper (RGMII or GMII) line-side interface an integrated SerDes fiber
line-side interface.
For copper operation for a given port, set the relevant bit to 0x1.
For fiber operation for a given port, set the relevant bit to 0x0.
Note: All ports are configured for fiber operation in the IXF1104 MAC
default mode of operation.
Clock and
Interface Mode
Change Enable
Ports 0 - 3
($0x794)
0x794
Bit 0 – Port 0
Bit 1 – Port 1
Bit 2 – Port 2
Bit 3 – Port 3
The Clock and Interface Mode Change Enable Ports 0 - 3 ($0x794)
indicates to an internal clock generator when to sample the new value
of the MAC IF Mode and RGMII Speed ($ Port_Index + 0x10) and the
Interface Mode ($0x501) (copper/fiber).
When any of these two configuration values are changed for a port, the
corresponding bits must be kept in this register under reset by writing
0x0 to the relevant bit.
Table 23 Operational Mode Configuration Registers (Sheet 2 of 2)
Register Name Register
Address Description
Note: The initialization sequence provided in Section 6.1, Change Port Mode Initialization Sequence, on
page 124 must be followed for proper configuration of the IXF1104 MAC.
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5.1.4.2 Determining If Link Is Established in Auto-Negotiation Mode
A valid link is established when the AN_complete bit is set and the RX_Sync bit reports that
synchronization has occurred. Both register bits are located in the RX Config Word ($
Port_Index + 0x16).
If the link goes down after auto-negotiation is completed, RX_Sync indicates that a loss of
synchronization occurred. The IXF1104 MAC restarts auto-negotiation and attempts to
reestablish a link. Once a link is reestablished, the AN_complete bit is set and the RX_Sync
bit shows that synchronization has occurred.
To manually restart auto-negotiation, bit 5 of the Diverse Config Write ($ Port_Index + 0x18)
(AN_enable) must be de-asserted, then re-asserted.
5.1.4.3 Fiber Forced Mode
The MAC fiber operation can be forced to operate at 1000 Mbps full-duplex without
completion of the auto-negotiation function. In this mode, the MAC RX path must achieve
synchronization with the link partner. Once achieved, the MAC TX path is enabled to allow
data transmission. This forced mode is limited to operation with a link partner that operates
with a full-duplex link at 1000 Mbps.
5.1.4.4 Determination of Link Establishment in Forced Mode
When the IXF1104 MAC is in forced mode operation, the RX Config Word ($ Port_Index +
0x16) bit 20 RX Sync indicates when synchronization occurs and a valid link establishes.
Note: The RX Sync bit indicates a loss of synchronization when the link is down.
5.1.5 Copper Mode
In copper mode, the IXF1104 MAC transmits data on the egress path of the RGMII or GMII
interface, depending on the port configuration defined by the user. The copper MAC
receives data on the ingress path of the RGMII or GMII interface, depending on the port
configuration defined by the user. The RGMII interface supports operation at 10/100/1000
Mbps when a full-duplex link is established, and supports 10/100 Mbps when a half-duplex
link is established. The GMII interface only supports a 1000 Mbps full-duplex link.
5.1.5.1 Speed
The copper MAC supports 10 Mbps, 100 Mbps, and 1000 Mbps. All required speed
adjustments, clocks, etc., are supplied by the MAC. The operating speed of the MAC is
programmable through the MAC IF Mode and RGMII Speed ($ Port_Index + 0x10)
(MAC_IF_Mode). The IXF1104 MAC speed setting must be programmed by the system
software to match the speed of the attached PHY for proper IXF1104 MAC operation.
Note: When the IXF1104 MAC is configured to use the GMII interface, the only mode of operation
that is supported is 1000 Mbps full-duplex.
If 10/100 Mbps operation is required in either full-duplex or half-duplex, the IXF1104 MAC
must be configured to use the RGMII interface.
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5.1.5.2 Duplex
The MAC supports full-duplex or half-duplex depending on the line-side interface that is
configured by the MAC IF Mode and RGMII Speed ($ Port_Index + 0x10) (MAC_IF_Mode).
The duplex of the MAC is set in the Table 70, Desired Duplex ($ Port_Index + 0x02), on
page 156. The IXF1104 MAC duplex setting must be programmed by the system software
to match the attached PHY duplex for proper IXF1104 MAC operation.
5.1.5.3 Copper Auto-Negotiation
In the copper MAC, auto-negotiation and all other controls of the PHY devices are achieved
through the MDIO interface, and are independent of the MAC controller. See Section 5.5,
MDIO Control and Interface, on page 95 for further operation details.
Note: In copper mode, auto-negotiation is accomplished by the attached PHY, not the IXF1104
MAC. Thus, the IXF1104 MAC does not automatically configure the MAC or other blocks in
the device to be consistent with attached PHY auto-negotiation results. This must be
accomplished by the user and system software.
5.1.6 Jumbo Packet Support
The IXF1104 MAC supports jumbo frames. The jumbo frame length is dependent on the
application and the IXF1104 MAC design is optimized for a 9.6 KB jumbo frame length.
Larger lengths can be programmed, but limited system performance may lead to data loss
during certain flow-control conditions
The value programmed into theMax Frame Size (Addr: Port_Index + 0x0F) determines the
maximum length frame size the MAC can receive or transmit without activating any error
counters, and without truncation.
TheMax Frame Size (Addr: Port_Index + 0x0F) bits 13:0 set the frame length. The default
value programmed into this register is 0x05EE (1518). The value is internally adjusted by +4
if the frame has a VLAN tag. The overall programmable maximum is 0x3FFF or 16383
bytes.
The register should be programmed to 0x2667 for the 9.6 KB length jumbo frame, optimized
for the IXF1104 MAC. The RMON counters are also implemented for jumbo frame support
as follows:
5.1.6.1 Rx Statistics
• RxOctetsTotalOK (Addr: Port_Index + 0x20)
• RxPkts1519toMaxOctets (Addr: Port_Index + 0x2B)
• RxFCSErrors (Addr: Port_Index + 0x2C)
• RxDatatError (Addr: Port_Index = 0x02E)
• RxAlignErrors (Addr: Port_Index + 0x2F)
• RxLongErrors (Addr: Port_Index + 0x30)
• RxJabberErrors (Addr: Port_Index + 0x31)
• RxVeryLongErrors (Addr: Port_Index + 0x34)
5.1.6.2 TX Statistics
• OctetsTransmittedOK (Addr: Port_Index + 0x40)
• TxPkts1519toMaxOctets (Addr: Port_Index + 0x4B)
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• TxExcessiveLengthDrop (Addr: Port_Index + 0x53)
• TxCRCError (Addr: Port_Index + 0x56)
The IXF1104 MAC checks the CRC for all legal-length jumbo frames (frames between 1519
and the Max Frame Size). On transmission, the MAC can be programmed to append the
CRC to the frame or check the CRC and increment the appropriate counter. On reception,
the MAC transmits these frames across the SPI3 interface (jumbo frames above the setting
in the RX FIFO Transfer Threshold Port 0 ($0x5B8) with a bad CRC cannot be dropped and
are sent across the SPI3 interface). If the receive frame has a bad CRC, the appropriate
counter increments and the RxERR flag is asserted on the SPI3 receive interface.
Jumbo frames also impact flow control. The maximum frame size needs to be taken into
account when determining the FIFO watermarks. The current transmission must be
completed before a Pause frame is transmitted (needed when the receiver FIFO High
watermark is exceeded). If the current transmission is a jumbo frame, the delay may be
significant and increase data loss due to insufficient available FIFO space.
5.1.6.3 Loss-less Flow Control
The IXF1104 MAC supports loss-less flow control when the size of a Jumbo packet is
restricted to 9.6 k bytes. If this condition is met, the IXF1104 MAC has sufficient memory
resources allocated to each MAC port to ensure that, if both the IXF1104 MAC and link
partner are required to send Pause packets simultaneously during jumbo packet transfers
across a medium of five kilometers of fiber, no packet data should be lost due to FIFO
overflows.
5.1.7 Packet Buffer Dimensions
5.1.7.1 TX and RX FIFO Operation
5.1.7.1.1 TX FIFO
The IXF1104 MAC TX FIFOs are implemented with 10 KB for each channel. This provides
enough space for at least one maximum size (10 KB) packet per-port storage and ensures
that no under-run conditions occur, assuming that the sending device can supply data at the
required data rate.
A transfer to MAC Threshold parameter, which is user-programmable, determines when the
FIFO signals to the MAC that it has data to send. This is configured for specific block sizes,
and the user must ensure that an under-run does not occur. Also, the threshold can be set
above the maximum size of a normal Ethernet packet. This causes the FIFO to send only
data to the MAC when this threshold is exceeded or when the End-of-Packet marker is
received. This second condition eliminates the possibility of under-run, except when the
controlling switch device fails. It can, however, cause idle times on the media.
5.1.7.1.2 RX FIFO
The IXF1104 MAC RX FIFOs are provisioned so that each port has its own 32 KB of
memory space. This is enough memory to ensure that there is never an over-run on any
channel while transferring normal Ethernet frame size data.
The FIFOs automatically generate Pause control frames to halt the link partner when the
High watermark is reached and to restart the link partner when the data stored in the FIFO
falls below the low-watermark. The RX and TX FIFOs have been sized to support lossless
flow control with 9.6 KB packets. The RX FIFO has a programmable transfer threshold that
sets the threshold at which packets become “cut through” and starts transitioning to the
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SPI3 interface before the EOP is received. Packets sizes below this threshold are treated
as “store and forward.” Once a packet size exceeds the RX FIFO transfer threshold, it can
no longer be dropped by the RX FIFO even if it is marked to be dropped by the MAC.
5.1.8 RMON Statistics Support
The IXF1104 MAC supplies RMON statistics through the CPU interface. These statistics are
available in the form of counter values that can be accessed at specific addresses in the
register maps (Table 58 through Table 68). Once read, these counters automatically reset
and begin counting from zero. A separate set of RMON statistics is available for each MAC
device in the IXF1104 MAC.
Implementation of the RMON Statistics block is similar to the functionality provided by
existing Cortina switch and router products. This implementation allows the IXF1104 MAC
to provide all of the RMON Statistics group as defined by RFC2819. The IXF1104 MAC
supports the RMON RFC2819 Group 1 statistics counters. Table 24 notes the differences
and additional statistics registers supported by the IXF1104 MAC that are outside the scope
of the RMON RFC2819 document.
Table 24 RMON Additional Statistics (Sheet 1 of 3)
RMON Ethernet Statistics
Group 1 Statistics Type IXF1104 MAC-
Equivalent Statistics Type
Definition of
RMON Versus
IXF1104 MAC
Documentation
etherStatsindex Integer32 NA NA NA
etherStatsDataSource Object
identifier NA NA NA
etherStatsDropEvents Counter32
RX Number of Frames
Removed/
TX Number of Frames
Removed
Counter32 See table note 1
etherStatsOctets Counter32
RxOctetsTotalOK
RxOctetsBad
OctetsTransmittedOK
OctetsTransmittedBad
Counter32
The IXF1104 MAC
has two counters for
receive and transmit
that use different
naming conventions
for the total Octets
and Octets Bad.
These counters
must be combined to
meet the RMON
definition for this
statistic.
Note: The RMON specification requires that this is, “The total number of events where packets were dropped by
the probe due to a lack of resources. This number is not necessarily the number of packets dropped; it is
the number of times this condition is detected. The RX FIFO Overflow Frame Drop Counter Ports 0 - 3
($0x594 – 0x597) and TX FIFO Overflow Frame Drop Counter Ports 0 - 3 ($0x621 – 0x624) in the
IXF1104 MAC support this and increment when either an RX FIFO or TX FIFO overflows. If any IXF1104
MAC programmable packet filtering is enabled, the RX FIFO Errored Frame Drop Counter Ports 0 - 3
($0x5A2 - 0x5A5) and TX FIFO Errored Frame Drop Counter Ports 0 - 3 ($0x625 – 0x629) increment with
every frame removed in addition to the existing frames counted due to FIFO overflow.
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etherStatsPkts Counter32
RxUCPkts/TxUCPkts
RxBCPkts/TxBCPkts
RxMCPkts/TxMCPkts
Counter32
The IXF1104 MAC
has three counters
for the
etherStatsPkts that
must be combined to
give the total
packets as defined
by the RMON
specification.
etherStatsBroadcastPkts Counter32 RxBCPkts/TxBCPkts Counter32 Same as RMON
specification
etherStatsMulticastPkts Counter32 RxMCPkts/TxMCPkts Counter32 See table note 2
etherStatsCRCAlignErrors Counter32
RxAlignErrors
RxFCSErrors
TxCRCError
Counter32
The IXF1104 MAC
has two counters for
the alignment and
CRC errors for the
RX side only.
The IXF1104 MAC
has a CRC Error
counter for the TX
side.
etherStatsUndersizedPkts Counter32
RxRuntErrors
RxShortErrors
Rx Statistics ONLY
Counter32
The IXF1104 MAC
has two counters,
one for Runt errors
and one for
ShortErrors.
etherStatsOversizePkts Counter32 RxLongErrors
TxExcessiveLength Drop Counter32 Same as RMON
specification
etherStatsFragments Counter32 RuntErrors Counter32 Same as RMON
specification
etherStatsJabbers Counter32 JabberErrors Counter32 Same as RMON
specification
etherStatsCollisions Counter32
TxSingleCollision
TxMultipleCollision
TxLateCollision
TxTotalCollision
Counter32
The TxTotalCollision
count value is
equivalent to the
RMON specification
minus the
TxLateCollision
etherStatsPkts64Octets Counter32 RxPkts64Octets/
TxPkts64Octets Counter32 Same as RMON
specification
etherStatsPkts65to127Octets Counter32 RxPkts65to127Octets/
TxPkts65to127Octets Counter32 Same a RMON
specification
etherStatsPkts128to255Octets Counter32 RxPkts128to255Octets/
TxPkts128to255Octets Counter32 Same a RMON
specification
Table 24 RMON Additional Statistics (Sheet 2 of 3)
RMON Ethernet Statistics
Group 1 Statistics Type IXF1104 MAC-
Equivalent Statistics Type
Definition of
RMON Versus
IXF1104 MAC
Documentation
Note: The RMON specification requires that this is, “The total number of events where packets were dropped by
the probe due to a lack of resources. This number is not necessarily the number of packets dropped; it is
the number of times this condition is detected. The RX FIFO Overflow Frame Drop Counter Ports 0 - 3
($0x594 – 0x597) and TX FIFO Overflow Frame Drop Counter Ports 0 - 3 ($0x621 – 0x624) in the
IXF1104 MAC support this and increment when either an RX FIFO or TX FIFO overflows. If any IXF1104
MAC programmable packet filtering is enabled, the RX FIFO Errored Frame Drop Counter Ports 0 - 3
($0x5A2 - 0x5A5) and TX FIFO Errored Frame Drop Counter Ports 0 - 3 ($0x625 – 0x629) increment with
every frame removed in addition to the existing frames counted due to FIFO overflow.
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5.1.8.1 Conventions
The following conventions are used throughout the RMON Management Information Base
(MIB) and its companion documents.
•Good Packets: Error-free packets that have a valid frame length. For example, on
Ethernet, good packets are error-free packets that are between 64 and 1518 octets
long. They follow the form defined in IEEE 802.3, Section 3.2.
•Bad Packets: Bad packets are packets that have proper framing and recognized as
packets, but contain errors within the packet or have an invalid length. For example, on
Ethernet, bad packets have a valid preamble and SFD, but have a bad CRC, or are
either shorter than 64 octets or longer than 1518 octets.
5.1.8.2 Advantages
The following lists additional IXF1104 MAC registers that support features not documented
in RMON:
• MAC (flow) control frames
• VLAN Tagged
• Sequence Errors
• Symbol Errors
•CRC Error
These additional counters allow for differentiation beyond standard RMON probes.
Note: In fiber mode, a packet transfer with an invalid 10-bit symbol does not always update the
statistics registers correctly.
•Behavior: The IXF1104 MAC 8B10B decoder substitutes a valid code word octet in its
place. The packet transfer is aborted and marked as bad. The new internal length of the
etherStatsPkts256to511Octets Counter32 RxPkts256to511Octets/
TxPkts256to511Octets Counter32 Same a RMON
specification
etherStatsPkts512to1023Octets Counter32 RxPkts512to1023Octets/
TxPkts512to1023Octets Counter32 Same a RMON
specification
etherStatsPkts1023to1518
Octets Counter32 RxPkts1023to1518Octets/
TxPkts1023to1518Octets Counter32 Same as RMON
specification
etherStatOwner Owner
String NA NA NA
etherStatsStatus Entry
Status NA NA NA
Table 24 RMON Additional Statistics (Sheet 3 of 3)
RMON Ethernet Statistics
Group 1 Statistics Type IXF1104 MAC-
Equivalent Statistics Type
Definition of
RMON Versus
IXF1104 MAC
Documentation
Note: The RMON specification requires that this is, “The total number of events where packets were dropped by
the probe due to a lack of resources. This number is not necessarily the number of packets dropped; it is
the number of times this condition is detected. The RX FIFO Overflow Frame Drop Counter Ports 0 - 3
($0x594 – 0x597) and TX FIFO Overflow Frame Drop Counter Ports 0 - 3 ($0x621 – 0x624) in the
IXF1104 MAC support this and increment when either an RX FIFO or TX FIFO overflows. If any IXF1104
MAC programmable packet filtering is enabled, the RX FIFO Errored Frame Drop Counter Ports 0 - 3
($0x5A2 - 0x5A5) and TX FIFO Errored Frame Drop Counter Ports 0 - 3 ($0x625 – 0x629) increment with
every frame removed in addition to the existing frames counted due to FIFO overflow.
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packet is equal to the byte position where the invalid symbol was. No packet fragments
are seen at the next packet transfer.
•Issue: If the invalid 10-bit code is inserted in a byte position of 64 or greater, expected
RX statistics are reported. However, if the invalid code is inserted in a byte position of
less than 64, expected RX statistics are not stored.
5.2 SPI3 Interface
The IXF1104 MAC SPI3 Interface is implemented to the System Packet Interface Level 3
(SPI3) Physical Layer Interface standard. The interface function allows the IXF1104 MAC
blocks to interface to higher-layer network processors or switch fabric.
The IXF1104 MAC transmit interface allows data flows from a network processor or switch
fabric device to the IXF1104 MAC. The receive interface allows data to flow from the
IXF1104 MAC to the network processor or switch fabric device.
This interface receives and transmits data between the MAC and the Network Processor
with compliant SPI3 interfaces. The SPI3 interface operation is defined in the OIF-SPI3-
01.0 (available from the Optical Internet Working Forum [www.oiforum.com]). The OIF
specification defines operation for the transfer of data at data rates of up to 3.2 Gbps when
operating at a frequency of 104 MHz. The IXF1104 MAC defines operation for the transfer
of data at data rates of up to 4.256 Gbps when operating at a maximum frequency of 133
MHz in MPHY mode and 125 MHz in SPHY Mode.
There is no guarantee of the number of bytes available since the size of packets is variable.
An IXF1104 MAC port-transmit packet available status is provided on signals DTPA, STPA
or PTPA, indicating the TX FIFO is nearly full.
In the receive direction, RVAL indicates if valid data is available on the receive data bus and
is defined so that data transfers can be aligned with packet boundaries.
The SPI3 interface supports the following two modes of operation:
• MPHY or 32 bit mode (one 32-bit data bus)
• SPHY or 4 x 8 mode (four individual 8-bit data buses)
5.2.1 MPHY Operation
The MPHY operation mode is selected when bit 21 of SPI3 Receive Configuration ($0x701)
is set to 1.
5.2.1.1 Data Path
The IXF1104 MAC SPI3 interface has a single 32-bit data path in the MPHY configuration
mode (see Figure 13). The bus interface is point-to-point (one output driving only one input
load), so a 32-bit data bus would support only one IXF1104 MAC.
To support variable-length packets, the RMOD[1:0]/TMOD[1:0] signals are defined to
specify valid bytes in the 32-bit data bus structure. Each double-word must contain four
valid bytes of packet data until the last double-word of the packet transfer, which is marked
with the end of packet REOP/TEOP signal. This last double-word of the transfer contains up
to four valid bytes specified by the RMOD[1:0]/TMOD[1:0] signals.
The IXF1104 MAC port selection is performed using in-band addressing. In the transmit
direction, the network processor device selects an IXF1104 MAC port by sending the
address on the TDAT[1:0] bus marked with the TSX signal active and TENB signal inactive.
All subsequent TDAT[1:0] bus operations marked with the TSX signal inactive and the
TENB active are packet data for the specified port.
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In the receive direction, the IXF1104 MAC specifies the selected port by sending the
address on the RDAT[1:0] bus marked with the RSX signal active and RVAL signal inactive.
All subsequent RDAT[1:0] bus operations marked with RSX inactive and RVAL active are
packet data from the specified port.
Note: See Table 16, SPI3 MPHY/SPHY Interface, on page 58 for a complete list of the MPHY
mode signals. The control signals with the port designator for Port 0 are the only ones used
in MPHY mode and they apply to all 4 ports. Table 3, SPI3 Interface Signal Descriptions, on
page 38 provides a comprehensive list of SPI3 signal descriptions.
5.2.1.2 SPI3 RX Round Robin Data Transmission
The IXF1104 MAC uses a round-robin protocol to service each of the 4 ports dependent
upon the enable status of the port and if there is data available to be taken from the RX
FIFO. The round robin order goes from port 0, port 1, port 2, port 3, and back to port 0. A
port is skipped and the next port is serviced if it has no available transmit data. The data
transfer bursts are user-configurable burst lengths of 64, 128, or 256 bytes. The IXF1104
MAC also has a configurable pause interval between data transfer bursts on the receive
side of the interface. The RX SPI3 burst lengths and the pause interval can be set in the
SPI3 Receive Configuration ($0x701)).
5.2.2 MPHY Logical Timing
The SPI3 interface AC timing for MPHY can be found in Section 7.2, SPI3 AC Timing
Specifications, on page 130. Logical timing in the following diagrams illustrates all signals
associated with MPHY mode.
5.2.2.1 Transmit Timing
In MPHY mode a packet transmission starts with the TSX signal indicating port address
information is on the data bus. The next clock cycle TENB and TSOP indicate present data
on the bus is the first word in the packet and all subsequent clocks will contain valid data as
long as TENB is active or until TEOP is asserted. Data transmission can be temporally
halted when TENB goes high then resumed when TENB is low. The valid bytes in the final
word, during an active TEOP, are indicated by state of TMOD [1:0].
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5.2.2.2 Receive Timing
A packet is received when RSX indicates port address information on the data bus followed
by RSOP to indicate the data bus contains the first word of a packet. All subsequent data is
valid only while RVAL is High and until REOP is asserted. Receive data can be temporarily
halted when RENB is de-asserted and starts again on the second rising edge of RFCLK
following the assertion of RENB. RMOD indicates the number of valid bytes in the last
transfer when REOP is asserted.
Figure 11 MPHY Transmit Logical Timing
B3216-02
TFCLK
TENB
TSOP
TEOP
TMOD
[1:0]
TERR
TSX
TDAT
[31:0]
TPRTY
0000 B0-B3 B4-B7 B48-B51B44-B47 B52-B55 B60-B64B56-B59 0001 B0-B3 B4-B7
1. Applies to all transmit packet available signals (STPA, PTPA, DTPA_0:3).
Figure 12 MPHY Receive Logical Timing
B3217-03
RFCLK
RENB
RSOP
REOP
RSX
RERR
RMOD
[1:0]
RDAT
[31:0]
RPRTY
RVAL
0000
B1-B3
B1-B3
B48-B51 B52-B55
B56-B59 B60-B63 00001
B4-B7
B0-B3
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5.2.2.3 Clock Rates
In MPHY mode, the TFCLK and RFCLK can be independent of each other. TFCLK and
RFCLK should be common to the IXF1104 MAC and the Network Processor. The IXF1104
MAC requires a single clock source for the transmit path and a single clock source for the
receive path.
To allow all four IXF1104 MAC ports to operate at 1 Gbps, the IXF1104 MAC is designed to
allow this interface to be overclocked. This allows operation for data transfer at data rates of
up to 4.256 Gbps when operating at an overclocked frequency of 133 MHz.
Note: MPHY mode operates at a maximum clock frequency of 133 MHz (TFCLK and RFCLK).
5.2.2.4 Parity
The IXF1104 MAC can be odd or even (the IXF1104 MAC is odd by default) when
calculating parity on the data bus. This can be changed to accommodate even parity if
desired, and can be set for transmit and receive independently. The RX Parity is set in bit 12
of the SPI3 Transmit and Global Configuration ($0x700).
Figure 13 MPHY 32-Bit Interface
B0660-02
TFCLK
TENB
TDAT[31:0]
TPRTY
TERR
TSX
TSOP
TEOP
Network Processor SPI3 Bus IXF1104 MPHY
Mode
Transceiver
TFCLK
TENB_0
TDAT[31:0]
TPRTY_0
TMOD[1:0] TMOD[1:0]
RMOD[1:0] RMOD[1:0]
TERR_0
TSX
TSOP_0
TEOP_0
RFCLK
RENB
RDAT[31:0]
RPRTY RPRTY
RVAL
RERR
RSX
RSOP
REOP
RPRTY_0
RFCLK
RENB_0
RDAT[31:0]
RVAL_0
RERR_0
RSX
RSOP_0
REOP_0
DTPA_0:3
STPA
PTPA
TADR[1:0]
DTPA_0:3
STPA
PTPA
TADR[1:0]
Transceiver
Transceiver
Transceiver
Line-Side Interface
Port 0
Port 1
Port 3
Port 2
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5.2.2.5 SPHY Mode
The SPHY operation mode is selected when bit 21 of the Table 145, SPI3 Transmit and
Global Configuration ($0x700), on page 203 is set to 1. The SPHY mode is the default
operation for the IXF1104 MAC SPI3 interface.
5.2.2.5.1 Data Path
The IXF1104 MAC SPI3 interface has four 8-bit data paths that can support four
independent 8-bit point-to-point connections in SPHY mode (see Figure 16). Since each
MAC port has its own dedicated 8-bit SPI3 data bus, each port has it own status signal
(unlike MPHY). See the For a detailed list of all the signals refer to the SPI3 pin multiplexing
table....
Furthermore since each port has it own dedicated bus the in band port addressing is not
needed. The 8 bit data bus eliminates the need to have separate control signals determine
the number of valid bytes on an EOP.Therefore TSX, RSX, TMOD[1:0] RMOD[1:0] are not
used in SPHY mode.
Note: See Table 16, SPI3 MPHY/SPHY Interface, on page 58 for a complete list of the SPHY
mode signals. Unlike MPHY mode, each port has a dedicated control signal associated with
each of the per-port 8-bit data buses. Table 3, SPI3 Interface Signal Descriptions, on
page 38 provides signal descriptions for all SPI3 signals.
5.2.2.5.2 Receive Data Transmission
Packets are transmitted on each port as they become available from the RX FIFO. The
burst length is determined by the setting of per port burst size and the B2B pause settings in
the SPI3 Receive Configuration ($0x701). If the B2B pause setting is zero pause cycles
inserted, then the entire packet will be burst without any pauses unless the Network
Processor de-asserts RENB. If the B2B_Pause setting calls for the insertion of two pause
cycles on a port, these are inserted after each data burst for that port. The data bursts are
user configurable for each port in the SPI3 Receive Configuration ($0x701).
5.2.2.6 SPHY Logical Timing
SPI3 interface AC timing for SPHY can be found in Section 7.2, SPI3 AC Timing
Specifications, on page 130. Logical timing in the following diagrams illustrates all signals
associated with SPHY mode. SPHY mode is similar to MPHY mode except the following
signals are not used:
•TMOD[1:0]
• RMOD[1:0]
•TSX
•RSX
• Address Data appearing on the data bus
5.2.2.7 Transmit Timing (SPHY)
Packet transmission starts when TENB and TSOP indicate present data on the bus is the
first word in the packet. All subsequent clocks will contain valid data as long as TENB is
active or until TEOP is asserted. Data transmission can be temporally halted when TENB
goes high then resumed when TENB is low.
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5.2.2.8 Receive Timing (SPHY)
A packet is received when RSOP is asserted to indicate the data bus contains the first word
of the packet. All subsequent data is valid only while RVAL is high and until REOP is
asserted. Receive data can be temporarily halted when RENB is de-asserted and starts
again on the second rising edge of RFCLK following the assertion of RENB. When REOP is
asserted RMOD indicates the number of valid bytes in the last transfer.
Figure 14 SPHY Transmit Logical Timing
B3249-02
TFCLK
TENB
TSOP
TEOP
TERR
TDAT
[7:0]
TPRTY
B0 B1 B60B59 B61 B63B62 B0 B1 B2
Figure 15 SPHY Receive Logical Timing
B3250-03
RFCLK
RENB
RSOP
REOP
RERR
RDAT
[7:0]
RPRTY
RVAL
B0 B2
B1 B62 B63 B0 B1 B2
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5.2.2.8.1 Clock Rates
The TFCLK and RFCLK can be independent of each other in SPHY mode operation.
TFCLK and RFCLK should be common to all the Network Processor devices. The IXF1104
MAC requires an individual single clock source for the device transmit path and a single
clock source for the device receive path.
The IXF1104 MAC allows this interface to be overclocked so that all four IXF1104 MAC
ports can operate at 1 Gbps. This allows data transfer at data rates of up to 4.0 Gbps when
operating at an overclocked frequency of 125 MHz.
Note: SPHY operates at a maximum frequency of 125 MHz.
Figure 16 SPHY Connection for Two IXF1104 MAC Ports (8-Bit Interface)
B0659-02
TFCLK
TENB[0]
TDAT[7:0][0]
TPRTY[0]
TERR[0]
TSOP[0]
TEOP[0]
Network Processor SPI3 Bus IXF1104
Port 0
TFCLK
TENB_0
TDAT[7:0]_0
TPRTY_0
TERR_0
TSOP_0
TEOP_0
RFCLK
RENB[0]
RDAT[7:0][0]
RPRTY[0] RPRTY_0
RVAL[0]
RERR[0]
RSOP[0]
REOP[0]
RFCLK
RENB_0
RDAT[7:0]_0
RVAL_0
RERR_0
RSOP_0
REOP_0
DTPA[0]
TFCLK
TENB[1]
TDAT[7:0][1]
TPRTY[1]
TERR[1]
TSOP[1]
TEOP[1]
RFCLK
RENB[1]
RDAT[7:0][1]
RPRTY[1] RPRTY_1
RVAL[1]
RERR[1]
RSOP[1]
REOP[1]
DTPA[1]
DTPA_0
Transceiver
Port 1
SPI3
Flow Control
TFCLK
TENB_1
TDAT[7:0]_1
TPRTY_1
TERR_1
TSOP_1
TEOP_1
RFCLK
RENB_1
RDAT[7:0]_1
RVAL_1
RERR_1
RSOP_1
REOP_1
DTPA_1 Transceiver
Port 0
Port 1
Line-Side
Interface
Line-Side
Interface
PTPA
TADR[1:0]
PTPA
TADR[1:0]
B0659-03
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5.2.2.8.2 Parity
The IXF1104 MAC can be odd or even (the IXF1104 MAC defaults to odd) when calculating
parity on the data bus. This can be changed to accommodate even parity if desired, and can
be set for transmit and receive ports independently. The RX and TX parity sense bits have a
direct relationship to the port parity in SPHY mode.
The per port RX parity is set in the SPI3 Receive Configuration ($0x701) and the per port
TX Parity is set in the SPI3 Transmit and Global Configuration ($0x700).
5.2.2.9 SPI3 Flow Control
The SPI3 packet interface supports transmit and receive data transfers at clock rates
independent of the line bit rate. As a result, the IXF1104 MAC supports packet rate
decoupling using internal FIFOs. These FIFOs are 10 KB per port in the transmit direction
(egress from the IXF1104 MAC to the line interfaces) and 32 KB per port in the receive
direction (ingress to the IXF1104 MAC from the line interfaces).
Control signals are provided to the network processor and the IXF1104 MAC to allow either
one to exercise flow control. Since the bus interface is point-to-point, the receive interface of
the
IXF1104 MAC pushes data to the link-layer device. For the transmit interface, the packet
available status granularity is byte-based.
5.2.2.9.1 RX SPI3 Flow Control
In the receive direction, when the IXF1104 MAC has stored an end-of-packet (a complete
small packet or the end of a larger packet) or some predefined number of bytes in its
receive FIFO, it sends the in-band address followed by FIFO data to the link-layer device (in
MPHY mode). The data on the interface bus is marked with the valid signal (RVAL)
asserted. The network processor device can pause the data flow by de-asserting the
Receive Read Enable (RENB) signal.
RENB_0:3
RENB_0:3 controls the flow of data from the IXF1104 MAC RX FIFOs. In SPHY mode, there
is a dedicated RENB for each port. In MPHY mode, RENB_0 is used as the global signal
covering all ports. When RENB is sampled Low, the network processor can accept data. A
read is performed from the RX FIFO and the RDAT, RPRTY, RMOD[1:0], RSOP, REOP,
RERR, RSX, and RVAL signals are updated on the following rising edge of RFCLK.
RENB can be asserted High by the Network Processor at any time if it is unable to accept
any more data. When the RENB is sampled High by the IXF1104 MAC, a read of the RX
FIFO is not performed, and the RDAT, RPRTY, RMOD[1:0], RSOP, REOP, RERR, RSX and
RVAL signals remain unchanged on the following rising edge of RFCLK.
5.2.2.9.2 TX SPI3 Flow Control
In the transmit direction, when the IXF1104 MAC has space for some predefined number of
bytes in its transmit FIFO, it informs the Network Processor device by asserting one of the
Transmit Packet Available (TPA) signals. The Network Processor device writes the in-band
address followed by packet data to the IXF1104 MAC using an enable signal (TENB). The
network processor device monitors the TPA signals for a High-to-Low transition, which
indicates that the transmit FIFO is almost full (the number of bytes left in the FIFO is user-
selectable by setting the TX FIFO High Watermark Ports 0 - 3 ($0x600 – 0x603), and
suspends data transfer to avoid an overflow. The Network Processor device can pause the
data flow by de-asserting the enable signal (TENB).
The IXF1104 MAC provides the following three types of TPA signals:
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• Dedicated per port Direct Transmit Packet Available (DTPA)
• Selected-PHY Transmit Packet Available (STPA), which is based on the current in-band
port address in MPHY mode.
• Polled-PHY Transmit packet Available (PTPA), which provides FIFO information on the
port selected by the TADR[1:0] signals.
The following three TPA signals (DTPA_0:3, STPA, and PTPA) provide flow control based
on the programmable TX FIFO High and Low watermarks. Refer to Table 131, TX FIFO
High Watermark Ports 0 - 3 ($0x600 – 0x603), on page 193 and Table 132, TX FIFO Low
Watermark Register Ports 0 - 3 ($0x60A – 0x60D), on page 195 for more information.
DTPA_0:3:
A direct status indication for the TX FIFOs of ports [0:3]. When DTPA is High, it indicates the
amount of data in the TX FIFO is below the TX FIFO High watermark. When the High
watermark is crossed, DTPA transitions Low to indicate the TX FIFO is almost full. It stays
low until the amount data in the TX FIFO goes back below the TX FIFO Low watermark. At
this point, DTPA transitions High to indicate the programmed number of bytes are now
available for data transfers.
DTPA_0:3 is updated on the rising edge of the TFCLK.
STPA:
STPA provides TX FIFO status for the currently selected port in MPHY mode. When High,
STPA indicates that the amount of data in the TX FIFO for the port selected, specified by the
latest in-band address, is below the TX FIFO High watermark. When the High watermark is
crossed, STPA transitions Low to indicate the TX FIFO is almost full. It stays Low until the
amount of data in the TX FIFO goes back below the TX FIFO Low watermark. At this point,
STPA transitions High to indicate the programmed number of bytes are now available for
data transfers.
The port reported by STPA is updated on the rising edge of TFCLK after TSX is sampled as
asserted. STPA is updated on the rising edge of TFCLK.
Note: STPA is only used when the IXF1104 MAC is configured for MPHY mode of operation.
PTPA:
PTPA provides status of the TX FIFO based on the port selected by the TADR[1:0] address
bus.
When High, PTPA indicates that the amount of data in the TX FIFO for the port selected is
below the TX FIFO High watermark. When the High watermark is crossed, PTPA transitions
Low to indicate the TX FIFO is almost full. It stays Low until the amount of data in the TX
FIFO goes back below the TX FIFO Low watermark. PTPA then transitions High to indicate
the programmed number of bytes are now available for data transfers.
The port reported by PTPA is updated on the rising edge of TFCLK after the TADR{1:0] port
address is sampled.
PTPA is updated on the rising edge of TFCLK.
5.2.3 Pre-Pending Function
The IXF1104 MAC implements a pre-pending feature to allow 1518-byte Ethernet packets
to be pre-padded with two additional bytes of data so that the packet becomes low-word
aligned. The 2-byte pre-pend value is all zeros and is inserted before the destination
address of the packet being pre-pended. This value is fixed and cannot be changed.
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This function is enabled by writing the appropriate data to the RX FIFO Padding and CRC
Strip Enable ($0x5B3) for each port.
A standard 1518-byte Ethernet packet occupies 379 long words (four bytes) with two
additional bytes left over (1518/4 = 379.5). To eliminate the memory-management problems
for a network processor or switch fabric, the two remaining bytes are dealt with by the
addition of two bytes to the start of a packet. This results in a standard 1518-byte Ethernet
packet received by the IXF1104 MAC being forwarded to the higher-layer device as a 380-
long-word packet. The upper-layer device is responsible for stripping the additional two
bytes.
This feature was added to the IXF1104 MAC to assist in the design of higher-layer memory
management. The addition of the two extra bytes is not the default operation of the IXF1104
MAC and must be enabled by the user. The default operation of the IXF1104 MAC SPI3
receive interface forwards data exactly as it is received by the IXF1104 MAC line interface.
5.3 Gigabit Media Independent Interface (GMII)
The IXF1104 MAC supports a subset of the GMII interface standard as defined in IEEE
802.3 2000 Edition for 1 Gbps operation only. This subset is limited to operation at 1000
Mbps full-duplex.
The GMII Interface operates as a source synchronous interface only and does not accept a
TXC clock provided by a PHY device when operating at 10/100 Mbps speeds.
Note: The RGMII interface must be used for applications that require 10/100/1000 Mbps
operation.
The IXF1104 MAC does NOT support 10/100 Mbps copper PHY devices that are
implemented using the MII Interface.
Note: MII operation is not supported by the IXF1104 MAC.
The user can select GMII, RGMII, or Optical Module/SerDes functionality on a per-port
basis. This mode of operation is controlled through a configuration register.
While IEEE 802.3 specifies 3.3 V operation of GMII devices, most PHYs use 2.5 V
signaling. The IXF1104 MAC provides a 2.5 V drive and is 3.3 V-tolerant on inputs.
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5.3.1 GMII Signal Multiplexing
The GMII balls are reassigned when using the RGMII mode or fiber mode. Table 15, Line
Side Interface Multiplexed Balls, on page 56 specifies the multiplexing of GMII balls in these
modes. See Section 5.1.3, Mixed-Mode Operation, on page 71 for proper configuration of
the IXF1104 MAC in GMII mode.
5.3.2 GMII Interface Signal Definition
Table 25, GMII Interface Signal Definitions, on page 91 provides the GMII interface signal
definitions. For information on 1000BASE-T GMII transmit and receive timing diagrams and
tables, please refer to Table 48, GMII 1000BASE-T Transmit Signal Parameters, on
page 136, Figure 38, 1000BASE-T Transmit Interface Timing, on page 136, Figure 39,
1000BASE-T Receive Interface Timing, on page 137, and Table 49, GMII 1000BASE-T
Receive Signal Parameters, on page 137
Figure 17 MAC GMII Interconnect
TXC_3:0
TX_EN_3:0
TX_ER_3:0
RXC_3:0
TXD[7:0]_0
TXD[7:0]_3
TXD[7:0]_2
TXD[7:0]_1
RX_EN_3:0
RX_ER_3:0
RXD[7:0]_0
RXD[7:0]_3
RXD[7:0]_2
RXD[7:0]_1
COL_3:0
CRS_3:0
IXF1104
Media Access Controller
TXC_3:0
TX_EN_3:0
TX_ER_3:0
TXD[7:0]_0
TXD[7:0]_3
TXD[7:0]_2
TXD[7:0]_1
RXC_3:0
RX_EN_3:0
RX_ER_3:0
RXD[7:0]_0
RXD[7:0]_3
RXD[7:0]_2
RXD[7:0]_1
COL_3:0
CRS_3:0
Quad PHY Device
B3203-02
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17 September 2008
Table 25 GMII Interface Signal Definitions
IXF1104 MAC
Signal
GMII Standard
Signal Source Description
TXC_0
TXC_1
TXC_2
TXC_3
GTX_CLK IXF1104
MAC
Transmit Reference Clock:
125 MHz for Gigabit operation.
MII operation for 10/100 Mbps operation is not
supported.
TXD[7:0]_0
TXD[7:0]_1
TXD[7:0]_2
TXD[7:0]_3
TXD[7:0] IXF1104
MAC
Transmit Data Bus:
Width of this synchronous output bus varies with the
speed/mode of operation. In 1000 Mbps mode, all 8
bits are used.
TX_EN_0
TX_EN_1
TX_EN_2
TX_EN_3
TX_EN IXF1104
MAC
Transmit Enable:
Synchronous input that indicates Valid data is being
driven on the TXD[7:0] data bus.
TX_ER_0
TX_ER_1
TX_ER_2
TX_ER_3
TX_ER IXF1104
MAC
Transmit Error:
Synchronous input to PHY causes the transmission of
error symbols in 1000 Mbps links.
RXC_0
RXC_1
RXC_2
RXC_3
RX_CLK PHY Receive Clock:
Continuous reference clock is 125 MHz +/– 100 ppm.
RXD[7:0]_0
RXD[7:0]_1
RXD[7:0]_2
RXD[7:0]_3
RXD<3:0> PHY
Receive Data Bus:
Width of the bus varies with the speed and mode of
operation. In 1000 Mbps mode, all 8 bits are driven by
the PHY device.
Note: MII operation at 10/100 Mbps is not supported.
RX_DV_0
RX_DV_1
RX_DV_2
RX_DV_3
RX_DV PHY
Receive Data Valid:
This signal is asserted when valid data is present on
the corresponding RXD bus.
RX_ER_0
RX_ER_1
RX_ER_2
RX_ER_3
RX_ER PHY
Receive Error:
In 1000 Mbps mode, asserted when error symbols or
carrier extension symbols are received.
Always synchronous to RX_CLK.
CRS_0
CRS_1
CRS_2
CRS_3
CRS PHY
Carrier Sense:
Asserted when valid activity is detected at the line-
side interface.
COL_0
COL_1
COL_2
COL_3
COL PHY
Collision:
Asserted when a collision is detected and remains
asserted for the duration of the collision event. In full-
duplex mode, the PHY should force this signal Low.
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5.4 Reduced Gigabit Media Independent Interface (RGMII)
The IXF1104 MAC supports the RGMII interface standard as defined in the RGMII Version
1.2 specification. The RGMII interface is an alternative to the IEEE 802.3u MII interface.
The RGMII interface is intended as an alternative to the IEEE 802.3u MII and the IEEE
802.3z GMII. The principle objective of the RGMII is to reduce the number of balls (from a
maximum of 28 balls to 12 balls) required to interconnect the MAC and the PHY. This
reduction is both cost-effective and technology-independent. To accomplish this objective,
the data paths and all associated control signals are reduced, control signals are
multiplexed together, and both edges of the clock are used.
• 1000 Mbps operation – clocks operate at 125 MHz
• 100 Mbps operation – clocks operate at 25 MHz
• 10 Mbps operation – clocks operate at 2.5 MHz.
Note: The IXF1104 MAC RGMII interface is multiplexed with signals from the GMII interface. See
Table 15, Line Side Interface Multiplexed Balls, on page 56 for detailed information.
5.4.1 Multiplexing of Data and Control
Multiplexing of data and control information is achieved by utilizing both edges of the
reference clocks and sending the lower four bits on the rising edge and the upper four bits
on the falling edge. Control signals are multiplexed into a single clock cycle using the same
technique. For further information on timing parameters, see Figure 37, RGMII Interface
Timing, on page 135 and Table 47, RGMII Interface Timing Parameters, on page 135.
5.4.2 Timing Specifics
The IXF1104 MAC RGMII complies with RGMII Rev1.2a requirements. Table 26 provides
the timing specifics.
Figure 18 RGMII Interface
TXC_3:0
TX_EN_3:0
TX_ER_3:0
RXC_3:0
TXD[7:0]_0
TXD[7:0]_3
TXD[7:0]_2
TXD[7:0]_1
RX_EN_3:0
RX_ER_3:0
RXD[7:0]_0
RXD[7:0]_3
RXD[7:0]_2
RXD[7:0]_1
COL_3:0
CRS_3:0
IXF1104
Media Access Controller
TXC_3:0
TX_EN_3:0
TX_ER_3:0
TXD[7:0]_0
TXD[7:0]_3
TXD[7:0]_2
TXD[7:0]_1
RXC_3:0
RX_EN_3:0
RX_ER_3:0
RXD[7:0]_0
RXD[7:0]_3
RXD[7:0]_2
RXD[7:0]_1
COL_3:0
CRS_3:0
Quad PHY Device
B3203-02
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5.4.3 TX_ER and RX_ER Coding
To reduce interface power, the transmit error condition (TX_ER) and the receive error
condition (RX_ER) are encoded on the RGMII interface to minimize transitions during
normal network operation (refer to Table 27 on page 93 for the encoding method). Table 26
provides signal definitions for RGMII.
The value of RGMII_TX_ER and RGMII_TX_EN are valid at the rising edge of the clock
while TX_ER is presented on the falling edge of the clock. RX_ER coding behaves in the
same way (see Table 27, Figure 19, and Figure 20).
Table 26 RGMII Signal Definitions
IXF1104
MAC Signal
RGMII
Standard
Signal
Source Description
TXC_0:3 TXC MAC Depending on speed, the transmit reference clock is 125 MHz, 25
MHz, or 2.5 MHz +/– 50ppm.
TD[3:0]_nTD<3:0> MAC Contains register bits 3:0 on the rising edge of TXC and register bits
7:4 on the falling edge of TXC.
TX_EN TX_CTL MAC TXEN is on the leading edge of TXC.
TX_EN xor TX_ER is on the falling edge of TXC.
RXC_0:3 RXC PHY Continuous reference clock is 125 MHz, 25 MHz, or 2.5 MHz +/– 50
ppm.
RD[3:0]_nRD<3:0> PHY Contains register bits 3:0 on the leading edge of RXC and register bits
7:4 on the trailing edge of RXC.
RX_DV RX_CTL PHY RX_DV is on the leading edge of RXC.
RX_DV or RXERR is the falling edge of RXC.
Table 27 TX_ER and RX_ER Coding Description
Condition Description
Receiving valid frame,
no errors
RX_DV = true
Logic High on rising edge of RXC
RX_ER = false
Logic High on the falling edge of RXC
Receiving valid frame,
with errors
RX_DV = true
Logic High on rising edge of RXC
RX_ER = true
Logic Low on the falling edge of RXC
Receiving invalid frame
(or no frame)
RX_DV = false
Logic Low on rising edge of RXC
RX_ER = false
Logic Low on the falling edge of RXC
Transmitting valid frame,
no errors
TX_EN = true
Logic High on rising edge of TXC
TX_ER =false
Logic High on the falling edge of TXC
Transmitting valid frame
with errors
TX_EN = true
Logic High on rising edge of TXC
TX_ER = true
Logic Low on the falling edge of TXC
Transmitting invalid
frame (or no frame)
TX_EN = false
Logic Low on rising edge of TXC
TX_ER = false
Logic low on the falling edge of TXC
Note: Refer to Figure 19 for TX_CTL behavior, and Figure 20 for RX_CTL behavior.
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Figure 19 TX_CTL Behavior
B0616-02
TXC_0:3
(at Transmitter)
TD[3:0]_0:3
TX_CTL_0:3
End-of-Frame
TD[3:0] TD[7:4]
TX_EN=True TX_ER=False TX_EN=False TX_ER=False
TXC_0:3
(at Transmitter)
TD[3:0]_0:3
TX_CTL_0:3
End-of-Frame
TD[3:0] TD[7:4]
TX_EN=True TX_ER=False TX_EN=False TX_ER=False
Valid Frame
Frame with Error
Figure 20 RX_CTL Behavior
B3237-01
RXC_0:3
(at PHY)
RD[3:0]_0:3
RX_CTL_0:3
End-of-Frame
RD[3:0] RD[7:4]
RX_DV=True RX_ER=False RX_DV=False RX_ER=False
RXC_0:3
(at PHY)
RD[3:0]_0:3
RX_CTL_0:3
End-of-Frame
RD[3:0] RD[7:4]
RX_DV=True RX_ER=True RX_DV=False RX_ER=False
Valid Frame
Frame with Error
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5.4.3.1 In-Band Status
Carrier Sense (CRS) is generated by the PHY when a packet is received from the network
interface. CRS is indicated when:
•RXDV = true.
• RXDV = false, RXERR = true, and a value of FF exists on the RXD[7:0] bits
simultaneously.
• Carrier Extend, Carrier Extend Error, or False Carrier occurs (please reference the
Hewlett-Packard* Version 1.2a RGMII Specification for details.).
Carrier Extend and Carrier Extend Error are applicable to Gigabit speeds only. Collision is
determined at the MAC by the assertion of TXEN being true while either CRS or RXDV are
true. The PHY will not assert CRS as a result of TXEN being true.
5.4.4 10/100 Mbps Functionality
The RGMII interface implements the 10/100 Mbps Ethernet Media Independent Interface
(MII) by reducing the clock rate to 25 MHz for 100 Mbps operation and 2.5 MHz for 10
Mbps. The TXC is generated by the MAC and the RXC is generated by the PHY. During
packet reception, the RXC is stretched on either the positive or negative pulse to
accommodate transition from the free-running clock to a data-synchronous clock domain.
When the speed of the PHY changes, a similar stretching of the positive or negative pulses
is allowed. No glitching of the clocks is allowed during speed transitions.
This interface operates at 10 Mbps and 100 Mbps speeds in the same manner as 1000
Mbps speed, although the data may be duplicated on the falling edge of the appropriate
clock. The MAC holds TX_CTL Low until it is operating at the same speed as the PHY.
Note: The IXF1104 MAC does not support 10/100 Mbps operation when configured in GMII mode
5.5 MDIO Control and Interface
The IXF1104 MAC supports the IEEE 802.3 MII Management Interface, also known as the
Management Data Input/Output (MDIO) Interface. This interface allows the IXF1104 MAC to
monitor and control each of the PHY devices that are connected to the four ports of IXF1104
MAC when those ports are in copper mode.
The MDIO Master Interface block is implemented once in the IXF1104 MAC. The MDIO
Interface block contains the logic through which the user accesses the registers in PHY
devices connected to the MDIO/MDC interface, which is controlled by each port.
The MDIO Master Interface block supports the management frame format, specified by
IEEE 802.3, clause 22.2.4.5. This block also supports single MDI access through the CPU
interface and an autoscan mode. Autoscan allows the IXF1104 MAC MDIO master to read
all 32 registers of the per-port copper PHYs and store the contents in the IXF1104 MAC.
This provides external-CPU-ready access to the PHY register contents through a single
CPU read without the latency of waiting on the low-speed serial MDIO data bus for each
register access.
Scan of a single register with low-frequency operation takes approximately 25.6 µs. Scan of
a 32-register block takes approximately 820 µs, or 3.3 ms for all four ports. Autoscan data is
not valid until approximately 19.2 µs after enabling scan. These numbers scale by 7/50 for
high-frequency operation.
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5.5.1 MDIO Address
The 5-bit PHY address for the MDIO transactions can be set in the MDIO Single Command
($0x680). Bits 5:2 of the PHY address are fixed to a value of 0. Bits 1 and 0 are
programmable in bits 9 and 8 of MDIO Single Command ($0x680).
5.5.2 MDIO Register Descriptions
For complete information on the MDI registers, refer to the Table 141, MDIO Single
Command ($0x680), on page 201, Table 142, MDIO Single Read and Write Data ($0x681),
on page 202, Table 143, Autoscan PHY Address Enable ($0x682), on page 202, and Table
144, MDIO Control ($0x683), on page 202.
5.5.3 Clear When Done
The MDI Command register bit, in the MDIO Single Command ($0x680), clears upon
command completion and is set by the user to start the requested single MDIO Read or
Write operation. This bit is cleared automatically upon operation completion.
5.5.4 MDC Generation
The MDC clock is used for the MDIO/MDC interface. The frequency of the MDC clock is
selectable by setting bit 0, MDC Speed, in an IXF1104 MAC configuration register (see
Table 144, MDIO Control ($0x683), on page 202).
5.5.4.1 MDC High-Frequency Operation
The high-frequency MDC is 18 MHz, derived from the 125-MHz system clock by dividing the
frequency by 7.
The duty cycle is as follows:
• MDC High duration: 3 x (1/125 MHz) = 3 x 8 ns = 24 ns
• MDC Low duration: 4 x (1/125 MHz) = 4 x 8 ns = 32 ns
• MDC runs continuously after reset
Refer to Figure 41, MDC High-Speed Operation Timing, on page 139 for the high-frequency
MDC timing diagram.
5.5.4.2 MDC Low-Frequency Operation
The low-frequency MDC is 2.5 MHz, which is derived from the 125-MHz system clock by
dividing the frequency by 50.
The duty cycle is as follows:
• MDC High duration: 25 x (1/125 MHz) = 25 x 8 ns = 200 ns
• MDC Low duration: 25 x (1/125 MHz) = 25 x 8 ns = 200 ns
• MDC runs continuously after reset
Refer to Figure 42, MDC Low-Speed Operation Timing, on page 139 for the low frequency
MDC timing diagram.
5.5.5 Management Frames
The Management Interface serializes the external register access information into the
format specified by IEEE 802.3, Section 22.2.4.5 (see Figure 21).
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5.5.6 Single MDI Command Operation
The Management Data Interface is accessed through the MDIO Single Command ($0x680)
and the MDIO Single Read and Write Data ($0x681). A single management frame is sent by
setting Register 0, bit 20 to logic 1, and is automatically cleared when the frame is
completed.
The Write data is first set up in Register 1, bits 15:0 for Write operation. Register 0 is
initialized with the appropriate control information (start, op code, etc.) and Register 0, bit 20
is set to logic 1. Register 0, bit 20 is reset to logic 0 when the frame is complete.
The steps are identical for Read operation except that in Register 1, bits 15:0, the data is
ignored. The data received from the MDIO is read by the CPU interface from Register 1, bits
31:16.
5.5.7 MDI State Machine
The MDI State Machine sequences the information sent to it by the MDIO control registers
and keeps track of the current sequence bit count, enabling or disabling the MDIO driver
output (see Figure 22.
Figure 21 Management Frame Structure (Single-Frame Format)
Preamble
32 Bits
Start
2 Bits
Op Code
2 Bits
PHY Addr
5 Bits
Turnaround
2 Bits
Data
16 Bits
First Bit TransmittedLast Bit Transmitted
REG Addr
5 Bits
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Figure 22 MDI State
Idle
Preamble
Go = 1
Cnt = 32
Cnt < 32
Start Bits
Cnt = 2
Cnt < 2
Cnt > 32
Cnt > 2
Cnt > 2
Op Code
Phy Addr
Cnt = 2
Cnt < 2
Cnt > 5 Cnt < 5
Reg Addr
Cnt = 5
Cnt = 5
Cnt < 5
Cnt > 5
Turn Around
Cnt > 2 Cnt < 2
Cnt = 2
Data
Cnt < 16
Cnt > 16
Cnt = 16 And Go = 1
or (Cnt = 16 and
Go = 0)
MDOE = 0
MDO = 0
MDC_EN = 0
MDOE = 1
MDO = 1
MDC_EN = 1
MDOE = 1
MDO = Reg_Bit_St(Cnt)
MDC_EN = 1
MDOE = 1
MDO = Reg_Bit_Op(Cnt)
MDC_EN = 0
MDOE = 1
MDO = Reg_Bit_PA(Cnt)
MDC_EN = 1
MDOE = 1
MDO = Reg_Bit_RA(Cnt)
MDC_EN = 1
MDOE = Wr_Op
MDO = Reg_Bit_WO(Cnt)
MDC_EN = 1
MDOE = Wr_Op
MDO = Data(Cnt)
MDC_EN = 1
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5.5.8 Autoscan Operation
The autoscan function allows the 32 registers in each external PHY (up to four) to be stored
internally in the IXF1104 MAC. Autoscan is enabled by setting bit 1 of the MDI Control
register. When enabled, autoscan runs continuously, reading each PHY register. When a
PHY register access is instigated through the CPU interface, the current autoscan register
Read is completed before the CPU register access starts. Upon completion of the CPU-
induced access, the autoscan functionality restarts from the last autoscan register access.
TheAutoscan PHY Address Enable ($0x682) determines which PHY addresses are being
occupied for each IXF1104 MAC port. The least significant bit (LSB) that is set in the
register is Port 0, the next significant bit that is set is assumed to be port 1, and so on. If
more than four bits are set, the bits beyond the fourth bit are ignored. If less than four bits
are set, the round-robin process returns to the port identified by the LSB being set.
5.6 SerDes Interface
The IXF1104 MAC integrates four integrated Serializer/Deserializer (SerDes) devices that
allow direct connection to optical modules and remove the requirement for external SerDes
devices. This increases integration, which reduces the size of the PCB area required to
implement this function, reduces total power, reduces silicon and manufacturing costs, and
improves reliability. Each SerDes interface is identical and fully compliant with the relevant
IEEE 802.3 Specifications, including auto-negotiation. Each port is also compliant with and
supports the requirements of the Small Form Factor Pluggable (SFP) Multi-Source
Agreement (MSA), see Section 5.7, Optical Module Interface, on page 103.
The following sections describe the operations supported by each interface, the
configurable options, and the register bits that control these options. A full list of the register
addresses and full bit definitions are found in the register maps (Table 58 through Table 68).
5.6.1 Features
The SerDes cores are designed to operate in point-to-point data transmission applications.
While the core can be used across various media types, such as PCB or backplanes, it is
configured specifically for use in 1000BASE-X Ethernet fiber applications in the IXF1104
MAC. The following features are supported.
• 10-bit data path, which connects to the output/input of the 8B/10B encoder/decoder
PCS that resides in the MAC controller
• Data frequency of 1.25 GHz
• Low power: <200 mW per SerDes port
• Asynchronous clock data recovery
5.6.2 Functional Description
The SerDes transmit interface sends serialized data at 1.25 GHz. The interface is
differential with two signals for transmit operation. The transmit interface is designed to
operate in a 100 Ω differential environment and all the terminations are included on the
device. The outputs are high speed SerDes. AC coupling is recommended for this interface
to ensure that the correct input bias current is supplied at the receiver. AC coupling is
typically included in SFP modules and is not required on the board for such applications.
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The SerDes receive interface receives serialized data at 1.25 GHz. The interface is
differential with two signals for the receive operation. The equalizer receives a differential
signal that is equalized for the assumed media channel. The SerDes transmit and receive
interfaces are designed to operate within a 100 Ω differential environment and all
terminations are included on the device.
5.6.2.1 Transmitter Operational Overview
The transmit section of the IXF1104 MAC has to serialize the Ten Bit Interface (TBI) data
from the IXF1104 MAC MAC section and outputs this data at 1.25 GHz differential signal
levels. The 1.25 GHz differential SerDes signals are compliant with the Small Form Factor
Pluggable (SFP) Multi-Source Agreement (MSA).
The transmitter section takes the contents of the data register within the MAC and
synchronously transfers the data out, ten bits at a time – Least Significant Bit (LSB) first,
followed by the next Most Significant Bit (MSB). When these ten bits have been serialized
and transmitted, the next word of 10-bit data from the MAC is ready to be serialized for
transmission.
The data is transmitted by the high-speed current mode differential SerDes output stage
using an internal 1.25 GHz clock generated from the 125 MHz clock input.
5.6.2.2 Transmitter Programmable Driver-Power Levels
The IXF1104 MAC SerDes core has programmable transmitter power levels to enhance
usability in any given application.The SerDes Registers are programmable to allow
adjustment of the transmit core driver output power. When driving a 100 Ω differential
terminated network, these output power settings effectively establish the differential voltage
swings at the driver output.
The TX Driver Power Level Ports 0 - 3 ($0x784) allows the selection of four discrete power
settings. The selected power setting of these inputs is applied to each of the transmit core
drivers on a per-port basis. Table 28, SerDes Driver TX Power Levels lists the normalized
power settings of the transmit drivers as a function of the Driver Power Control inputs. The
normalized current setting is 10 mA, which corresponds to the normalized power setting of
1.0. This is the default setting of the IXF1104 MAC SerDes interface. Other values listed in
the Normalized Driver Power Setting column are multiples of 10 mA. For example, with
inputs at 1110, the driver power is the following:
Equation 1 .5 x 10 mA = 5 mA.
Table 28 SerDes Driver TX Power Levels
DRVPWRx[3] DRVPWRx[2] DRVPWRx[1] DRVPWRx[0]
Normalized
Driver Power
Setting
Driver Power
00111.3313.3 mA
1011 2.020 mA
1101 1.010 mA
1110 0.5 5 mA
Note: All other values are reserved.
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5.6.2.3 Receiver Operational Overview
The receiver structure performs Clock and Data Recovery (CDR) on the incoming serial
data stream. The quality of this operation is a dominant factor for the Bit Error Rate (BER)
system performance. Feed forward and feedback controls are combined in one receiver
architecture for enhanced performance. The data is over-sampled and a digital circuit
detects the edge position in the data stream. A signal is not generated if an edge is not
found. A feedback loop takes care of low-frequency jitter phenomenon of unlimited
amplitude, while a feed forward section suppresses high-frequency jitter having limited
amplitude. The static edge position is held at a constant position in the over-sampled by a
constant adjustment of the sampling phases with the early and late signals.
5.6.2.4 Selective Power-Down
The IXF1104 MAC offers the ability to selectively power-down any of the SerDes TX or RX
ports that are not being used. This is done via Table 149, TX and RX Power-Down ($0x787),
on page 209.
5.6.2.5 Receiver Jitter Tolerance
The SerDes receiver architecture is designed to track frequency mismatch, recover phase,
and is tolerant of low-frequency data jitter. Figure 23 specifies the SerDes core receiver
sinusoidal jitter tracking capabilities.
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5.6.2.6 Transmit Jitter
The SerDes core total transmit jitter, including contributions from the intermediate frequency
PLL, is comprised of the following two components:
• A deterministic component attributed to the SerDes core’s architectural characteristics
• A random component attributed to random thermal noise effects
Since the thermal noise component is random and statistical in nature, the SerDes core
total transmit jitter must be specified as a function of BER.
5.6.2.7 Receive Jitter
The SerDes core total receiver jitter, including contributions from the intermediate frequency
PLL, is comprised of the following two components:
• A deterministic component attributed to the SerDes core architectural characteristics
• A random component attributed to random thermal noise effects.
Figure 23 SerDes Receiver Jitter Tolerance
Note: UI = Unit interval.
B0745-02
10-1
0
10+1
100101102103104105106107
Frequency
Sinusoidal Jitter Mask
Peak-to-Peak Amplitude (UI)
16 ui 375 Hz 16 ui
22.5836 kHz 8.5 ui
1.9195 MHz 0.1 ui
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5.7 Optical Module Interface
This section describes the connection of the IXF1104 MAC ports to an Optical Module
Interface and details the minimal connections that are supported for correct operation. The
registers used for write control and read status information are documented.
The Optical Module Interface allows the IXF1104 MAC a seamless connection to the Small
Form Factor Optical Modules (SFP) that form the system’s physical media connection,
eliminating the need for any FPGAs or CPUs to process data. All required optical module
information is available to the system CPU through the IXF1104 MAC CPU interface,
leading to a more integrated, reliable, and cost-effective system.
The IXF1104 MAC supports all the functions required for the Small Form Factor pluggable
Multi-Source Agreement (MSA).
There are specific mechanical and electrical requirements for the size, form factor, and
connections supported on all Optical Module Interfaces. There are also specific
requirements for each Optical Module Interface that supports a particular media
requirement or interface configuration. These requirements are detailed in the relevant
specifications or manufacturers’ datasheets.IXF1104 MAC
5.7.1 IXF1104 MAC-Supported Optical Module Interface Signals
To describe the Optical Module Interface operation, three supported signal subgroups are
required, allowing a more explicit definition of each function and implementation. The three
subgroups are as follows:
• High-Speed Serial Interface
• Low-Speed Status Signaling Interface
• I²C Module Configuration Interface
Table 29 provides descriptions for IXF1104 MAC-to-SFP optical module connection signals.
Table 29 IXF1104 MAC-to-SFP Optical Module Interface Connections
IXF1104 MAC
Signal Names
SFP Signal
Names Description Notes
TX_P_0:3 TD+ Transmit Data, Differential LVDS Output from the IXF1104 MAC
TX_N_0:3 TD- Transmit Data, Differential LVDS Output from the IXF1104 MAC
RX_P_0:3 RD+ Receive Data, Differential LVDS Input to the IXF1104 MAC
RX_N_0:3 RD- Receive Data, Differential LVDS Input to the IXF1104 MAC
I2C_CLK MOD-DEF1 I2C_CLK output from the
IXF1104 MAC (SCL) Output from the IXF1104 MAC
I2C_DATA_0:3 MOD-DEF2 I2C_DATA I/O (SDA) Input/Output
MOD_DEF_0:3 MOD-DEF0 MOD_DEF_0 is TTL Low level
during normal operation. Input to the IXF1104 MAC
TX_DISABLE_0:3 TX DISABLE Transmitter disable, logic High,
open collector compatible Output from the IXF1104 MAC
TX_FAULT_0:3 TX FAULT Transmitter fault, logic High, open
collector compatible Input to the IXF1104 MAC
RX_LOS_0:3 LOS Receiver loss-of-signal, logic High,
open collector compatible Input to the IXF1104 MAC
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5.7.2 Functional Descriptions
5.7.2.1 High-Speed Serial Interface
These signals are responsible for transfer of the actual data at 1.25 Gbps. Table 40, DC
Specifications, on page 128 shows the data is 8B/10B encoded and transmitted
differentially.
The following signals are required to implement the high-speed serial interface:
• TX_P_0:3
•TX_N_0:3
• RX_P_0:3
• RX_N_0:3
5.7.2.2 Low-Speed Status Signaling Interface
The following Low-Speed signals indicate the state of the line through the Optical Module
Interface:
• MOD_DEF_0:3
•TX_FAULT_0:3
• RX_LOS_0:3
• TX_DISABLE_0:3
• MOD_DEF_INT
•TX_FAULT_INT
• RX_LOS_INT
5.7.2.2.1 MOD_DEF_0:3
MOD_DEF_0:3 are direct inputs to the IXF1104 MAC and are pulled to a logic Low level
during normal operation, indicating that a module is present for each channel respectively. If
a module is not present, a logic High is received, which is achieved by an external pull-up
resistor at the IXF1104 MAC device pad.
The status of each bit (one for each port) is found in bits [3:0] of the Table 152 on page 211).
Any change in the state of these bits causes a logic Low level on the MOD_DEF_INT output
if this operation is enabled.
5.7.2.2.2 TX_FAULT_0:3
TX_FAULT_0:3 are inputs to the IXF1104 MAC. These signals are pulled to a logic Low
level by the optical module during normal operation. A logic Low level on these signals
indicates no fault condition exists. If a fault is present, a logic High is received through the
use of an external pull-up resistor at the IXF1104 MAC pad.
The status of each bit (one for each port) can be found in bits [13:10] of the Table 152 on
page 211. Any change in the state of these bits causes a logic Low level on the
TX_FAULT_INT output if this operation is enabled.
5.7.2.2.3 RX_LOS_0:3
RX_LOS_0:3 are inputs to the IXF1104 MAC. These signals are pulled to a logic Low level
by the optical module during normal operation, which indicates that no loss-of-signal exists.
If a loss-of-signal occurs, a logic High is received on these inputs through the use of an
external pull-up resistor at the IXF1104 MAC device pad.
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The status of each bit (one for each port) is found in Optical Module Status Ports 0-3
($0x799) bits [23:20]. Any change in the state of these bits causes a logic Low level on the
RX_LOS_INT output if this operation is enabled.
5.7.2.2.4 TX_DISABLE_0:3
TX_DISABLE_0:3 are outputs from the IXF1104 MAC. These signals are driven to a logic
Low level by the IXF1104 MAC during normal operation. This indicates that the optical
module transmitter is enabled. If the optical module transmitter is disabled, this signal is
switched to a logic High level. On the IXF1104 MAC, these outputs are open drain types and
pulled up by the 4.7 k to 10 k pull-up resistor at the Optical Module Interface. Each of these
signals is controlled through bits 3:0 respectively of the Optical Module Control Ports 0 - 3
($0x79A).
5.7.2.2.5 MOD_DEF_INT
MOD_DEF_INT is a single output, open-drain type signal and is active Low. A change in
state of any MOD_DEF_0:3 inputs causes this signal to switch Low and remain in this state
until a read of the Optical Module Status Ports 0-3 ($0x799). The signal then returns to an
inactive state.
5.7.2.2.6 TX_FAULT_INT
TX_FAULT_INT is a single output, open-drain type signal and is active Low. A change in
state of any TX_FAULT_0:3 inputs causes this signal to switch Low and remain in this state
until a read of the Optical Module Status Ports 0-3 ($0x799). The signal then returns to an
inactive state.
5.7.2.2.7 RX_LOS_INT
RX_LOS_INT is a single output, open-drain type signal and is active low. A change in state
of any of the RX_LOS_3:0 inputs causes this signal to switch low and remain in this state
until a Read of the Optical Module Status Ports 0-3 ($0x799) has taken place. The signal
returns to an inactive state.
Note: MOD_DEF_INT, TX_FAULT_INT, and RX_LOS_INT are open-drain type outputs. With the
three signals on the device, the system can decide which Optical Module Status Ports 0-3
($0x799) bits to look at to identify the interrupt condition source port. However, this is
achieved at the expense of the three device signals.
5.7.3 I²C Module Configuration Interface
The I²C interface is supported on SFP optical modules. Details of the operation are found in
the SFP Multi-Source Agreement, which details the contents of the registers and addresses
accessible on a given Optical Module Interface supporting this interface.
The SFP MSA identifies up to 512 8-bit registers that are accessible in each optical module.
The Optical Module Interface is read-only and supports either sequential or random access
to the 8-bit parameters. The maximum clock rate of the interface is 100 kHz. All address-
select signals on the internal E²PROM are tied Low to give a device address equal to zero
(00h).
Several PHY vendors may offer copper/CAT5-based SFP optical compliant modules. To
program the internal configuration registers of these modules, the IXF1104 MAC I2C
interface needs to provide the capability to write data to the SFP modules.
The IXF1104 MAC I2C interface is designed to allow individual writes of byte-wide data to
the SFP.
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The specific interface in the IXF1104 MAC supports only a subset of the full I²C interface,
and only the features required to support the Optical Module Interfaces are implemented.
This leads to the following support features.
• Single I2C_CLK pin connected to all optical modules and implemented to save
unnecessary signals use.
• Four per-port I2C_DATA signals (I²C Data[3:0]) are required because of the optical
module requirement that all modules must be addressed as 00h.
• The interface has both read and write functionality.
• Due to the single internal optical module controller, only one optical module may be
accessed at any one time. Each access contains a single register Read. Since these
register accesses will most likely be done during power-up or discovery of a new
module, these restrictions should not affect normal operation.
•The I
2C interface supports byte write accesses to the full address range.
Note: The I2C interface only supports random single-byte reads and does not guarantee
coherency when reading two-byte registers.
5.7.3.1 I2C Control and Data Registers
In the IXF1104 MAC, the entire I²C interface is controlled through the following two
registers:
•Table 154, I2C Control Ports 0 - 3 ($0x79B), on page 212
•Table 155, I2C Data Ports 0 - 3 ($0x79F), on page 212
These registers can be programmed by system software using the CPU interface.
5.7.3.2 I2C Read Operation
To perform a read operation using the I2C interface, use the following sequence:
1. Initialize the Control register by setting the following values:
a. Enable the I2C Controller by setting bit [25] to 0x1.
b. Initiate the I2C transfer by setting bit [24] of the control register to 0x1.
c. Select the port by using bits [17:16].
d. Select the Read mode of operation by setting bit [15] to 0x1.
e. Select the Device ID by setting bits [14:11].
f. Select the register address by setting bits [10:0].
2. Set the Device ID field to 0xA and the register address (bits 10:8) to 0x0 to access the
fiber module serial E2PROM. Setting the Device ID field to 0xA and the Register
Address [10:8] to 0x0 permits read-only access.
3. Set the Device ID field to 0xA and the Register Address [10:8] between the values of
0x1 and 0x7 to access the PHY registers.
4. Poll the Read_Valid field, bit 20. The read data is available when this bit is set to 0x1.
Figure 24 shows an 8-bit read access.
Note: The user software ensures the order of the contiguous accesses required to read the High
and Low bytes of 16-bit-wide PHY registers.
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Note: Only one optical module I²C access sequence can be run at any given time. If a second
write is carried out to the I2C Control Ports 0 - 3 ($0x79B) and I2C Data Ports 0 - 3 ($0x79F)
before a result is returned for the previous write, the data for the first write is lost. An internal
state machine completes the Optical Module Interface register access for the first write. It
attempts to place the data in the DataRead field and checks to see if the WriteCommand bit
is 00h. If it is not 00h, it discards the data and signals the I²C access state machine to begin
a new cycle using the data from the second write.
5.7.3.3 I2C Write Operation
The following sequence provides an example of writing data to Register Address 0xFF for
Port 3:
1. Program the I2C Control Ports 0 - 3 ($0x79B) with the following information:
a. Enable the I2C block by setting Register bit 25 to 0x1.
b. Set the port to be accessed by setting Register bits 17:16 to 0x3.
c. Select a Write access by setting Register bit 15 to 0x0.
d. Set the Device ID Register bits 14:11 to Ah (Atmel compatible).
e. Set the 11-bit register address (Register bits 10:0) to 0FFh.
f. Enable the I2C controller by setting Register bit 2 to 0x1.
g. Initiate the I2C transfer by setting Register bit 24 to 0x1.
All other bits in this register should be set to 0x0.
This data is written into the I2C Control Ports 0 - 3 ($0x79B) in a single cycle via the CPU
interface.
2. When this register is written and the I2C Start bit is at a Logic 1, the I2C access state
machine examines the Port Address Select and enables the I2C_DATA_0:3 output for
the selected port.
3. The state machines uses the data in the Device ID and Register Address fields to build
the data frame to be sent to the optical module
4. The I2C_DATA_WRITE_FSM internal state machine takes over the task of transferring
the actual data between the IXF1104 MAC and the selected optical module (refer to the
details in Section 5.7.3.4, I²C Protocol Specifics, on page 108).
5. The I2C_DATA_WRITE_FSM internal state machine uses the data from the Write_Data
field bits [23:16] of the Table 155 on page 212 and sets the Write_Complete Register bit
Figure 24 I2C Random Read Transaction
DEVICE
ADDRESS
DEVICE
ADDRESS
WORD
ADDRESS
I2
C_Data Li ne
DUMMY WRITE
(* = DON'T CARE bi t f or 1k)
START
S
T
A
R
T
R
E
A
D
S
T
A
R
T
W
R
I
T
E
S
T
O
P
M
S
B
M
S
B
M
S
B
L
S
B
R
/
W
L
S
B
DATAn
L
S
B
A
C
K
N
O
A
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K
A
C
K
*
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22 of the I2C Control Ports 0 - 3 ($0x79B) to 0x1 to signify that the Write Access is
complete.
6. The data is written through the CPU interface. The CPU must poll the Write_Complete
bit until it is set to 0x1. It is safe to request a new access only when this bit is set.
Note: Only one optical module I2C access sequence can be run at any given time. The data for
the first Write is lost if a second Write is carried out to the I2C Control Ports 0 - 3 ($0x79B)
before a result is returned for the previous Write. Make sure Write complete = 0x1 before
starting the next Write sequence to ensure that no data is lost.
5.7.3.4 I²C Protocol Specifics
Section 5.7.3.4 describes the IXF1104 MAC I²C Protocol behavior, which is controlled by an
internal state machine. Specific protocol states are defined below, with an additional
description of the hardware signals used on the interface.
The Serial Clock Line (I2C_CLK) is an output from the IXF1104 MAC. The serial data is
synchronous with this clock and is driven off the rising edge by the IXF1104 MAC and off the
falling edge by the optical module. The IXF1104 MAC has only one I2C_CLK line that drives
all of the optical modules. I2C_CLK runs continuously when enabled (I²C Enable = 01h0).
The Serial Data (I2C_DATA_3:0) signals (one per port) are bi-directional for serial data
transfer. These signals are open drain.
5.7.3.5 Port Protocol Operation
5.7.3.6 Clock and Data Transitions
The I2C_DATA is normally pulled High with an extra device. Data on the I2C_DATA pin
changes only during the I2C_CLK Low time periods (see Figure 25). Data changes during
I2C_CLK High periods indicate a start or stop condition.
5.7.3.6.1 Start Condition
A High-to-Low transition of I2C_DATA, with I2C_CLK High, is a start condition that must
precede any other command (see Figure 26).
5.7.3.6.2 Stop Condition
A Low-to-High transition of the I2C_DATA with I2C_CLK High is a stop condition. After a
Read sequence, the stop command places the E²PROM and the optical module in a
standby power mode (see Figure 26).
Figure 25 Data Validity Timing
DATA STABLE DATA STABLE
DATA
CHANGE
I2C_Data
I2C_Clk
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5.7.3.6.3 Acknowledge
All addresses and data words are serially transmitted to and from the optical module in 8-bit
words. The optical module E²PROM sends a zero to acknowledge that it has received each
word, which happens during the ninth clock cycle (see Figure 27).
5.7.3.6.4 Memory Reset
After an interruption in protocol, power loss, or system reset, any 2-wire optical module can
be reset by following three steps:
1. Clock up to 9 cycles
2. Wait for I2C_DATA High in each cycle while I2C_CLK is High
3. Initiate a start condition.
5.7.3.6.5 Device Addressing
All E²PROMs in SFP optical module devices require an 8-bit device address word following
a start condition to enable the chip to read or write. The device address word consists of a
mandatory one, zero sequence for the four most-significant bits. This is common to all
devices. The next three bits are the A2, A1, and A0 device address bits that are tied to zero
Figure 26 Start and Stop Definition Timing
START STOP
I2C_Data
I2C_Data
Figure 27 Acknowledge Timing
START ACKNOWLEDGE
I2C_Data
DATA IN
DATA OUT
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in an optical module. The eighth bit of the device address is the Read/Write operation select
bit. A Read operation is initiated if this bit is High and a Write operation is initiated if this bit
is Low.
Upon comparison of the device address, the optical module outputs a zero. If a comparison
is not made, the optical module E²PROM returns to a standby state.
5.7.3.6.6 Random Read Operation
A random Read requires a “dummy” Byte/Write sequence to load the data word address.
The “dummy” write is achieved by first sending the device address word with the Read/
Write bit cleared to Low, which signals a Write operation. The optical module acknowledges
receipt of the device address word. The IXF1104 MAC sends the data word address, which
is again acknowledged by the optical module. The IXF1104 MAC generates another start
condition. This completes the “dummy” write and sets the optical module E²PROM pointers
to the desired location.
The IXF1104 MAC initiates a current address read by sending a device address with the
Read/Write bit set High. The optical module acknowledges the device address and serially
clocks out the data word. The IXF1104 MAC does not respond with a zero but generates a
stop condition (see Figure 28).
5.8 LED Interface
The IXF1104 MAC uses a Serial interface, consisting of three signals, to provide LED data
to some form of external driver. This provides the data for 12 separate direct drive LEDs and
allows three LEDs per MAC port.
There are two modes of operation, each with its own separate LED decode mapping.
Modes of operation and LEDs are detailed in the following sections.
5.8.1 Modes of Operation
There are two modes of operation: Mode 0 and Mode 1. Mode selection is accomplished by
using the LED_SEL_MODE bit. This bit is globally selected and controls the operation of all
ports (see Table 108, LED Control ($0x509), on page 182).
Mode 0: (LED_SEL_MODE = 0 [Default]): This mode selects operations compatible with
the SGS Thompson M5450 LED Display Driver device. This device converts the serial data
stream, output by the IXF1104 MAC, into 30 direct-drive LED outputs. Although the LED
interface is capable of driving all 30 LEDs, only twelve will be driven in the four-port IXF1104
MAC, three LEDs per port.
Figure 28 Random Read
DEVICE
ADDRESS
DEVICE
ADDRESS
WORD
ADDRESS
I2
C_Dat a Li ne
DUMMY WRI TE
(* = DON'T CARE bi t f or 1k)
START
S
T
A
R
T
R
E
A
D
S
T
A
R
T
W
R
I
T
E
S
T
O
P
M
S
B
M
S
B
M
S
B
L
S
B
R
/
W
L
S
B
DATAn
L
S
B
A
C
K
N
O
A
C
K
A
C
K
*
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Mode 1: (LED_SEL_MODE = 1): This mode is used with standard TTL (74LS599) or
HCMOS (74HC599) octal shift registers with latches, providing the most general and cost-
effective implementation of the serial data stream conversion.
In addition to these physical modes of operation, there are two types of specific LED data
decodes available for fiber and copper modes. This option is a global selection and controls
the operation of all ports (see Table 108, LED Control ($0x509), on page 182).
5.8.2 LED Interface Signal Description
The IXF1104 MAC LED interface consists of three output signal signals that are 2.5 V
CMOS level pads. Table 30 provides LED signal names, pin numbers, and descriptions.
5.8.3 Mode 0: Detailed Operation
Note: Please refer to the SGS Thompson* M5450 datasheet for device-operation information.
The operation of the LED Interface in Mode 0 is based on a 36-bit counter loop. The data for
each LED is placed in turn on the serial data line and clocked out by the LED_CLK. Figure
29 shows the basic timing relationship and relative positioning in the data stream of each
bit.
Figure 29 shows the 36 clocks that are output on the LED_CLK pin. The data is changed on
the falling edge of the clock and is valid for almost the entire clock cycle. This ensures that
the data is valid during the rising edge of the LED_CLK, which clocks the data into the
M5450 device.
The actual data shown in Figure 29 consists of a chain of 36 bits, 12 of which are valid LED
DATA. The 36-bit data chain is built up as follows:
Table 30 LED Interface Signal Descriptions
Pin Name Pin # Pin Description
LED_CLK K24
This signal is an output that provides a continuous clock synchronous to the
serial data stream output on the LED_DATA pin. This clock has a maximum
speed of 720 Hz.
The behavior of this signal remains constant in all modes of operation.
LED_DATA M22
This signal provides the data, in various formats, as a serial bit stream. The data
must be valid on the rising edge of the LED_CLK signal.
In Mode 0, the data presented on this pin is TRUE (Logic 1 = High).
In Mode 1, the data presented on this pin is INVERTED (Logic 1 = Low).
LED_LATCH L22
This is an output pin, and the signal is used only in Mode 1 as the Latch enable
for the shift register chain.
This signal is not used in Mode 0, and should be left unconnected.
Figure 29 Mode 0 Timing
122 23 24 25 26 27 28 29 30
13534333231302928272625234
LED_CLK
LED_DATA
LED_LATCH
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When implemented on the board with the M5450 device, the LED DATA bit 1 appears on
Output bit 3 of the M5450 and the LED DATA bit 2 appears on Output bit 4, etc. This means
that Output bits 1, 2, and 15 through 35 will never have valid data and should not be used.
5.8.4 Mode 1: Detailed Operation
Note: Please refer to generic specifications for 74LS/HC599 for information on device operation.
The operation of the LED Interface in Mode 1 is based on a 36-bit counter loop. The data for
each LED is placed in turn on the serial data line and clocked out by the LED_CLK. Figure
30 on page 113 shows the basic timing relationship and relative positioning in the data
stream of each bit.
Figure 30 on page 113 shows the 36 clocks which are output on the LED_CLK pin. The data
is changed on the falling edge of the clock and is valid for the almost the entire clock cycle.
This ensures that the data is valid during the rising edge of the LED_CLK, which clocks the
data into the shift register chain devices.
The LED_LATCH signal is required in Mode 1, and latches the data shifted into the shift
register chain into the output latches of the 74HC599 device. Figure 30 shows that the
LED_LATCH signal is active High during the Low period on the 35th LED_CLK cycle. This
avoids any possibility of trying to latch data as it is shifting through the register.
When this operation mode is implemented on a board with a shift register chain containing
three 74HC599 devices, the LED DATA bit 1 is output on Shift register bit 1, and so on up
the chain. Only Shift register bits 31 and 32 do not contain valid data.
The actual data shown in Figure 30 consists of a 36-bit chain, of which 12 bits are valid LED
DATA. The 36-bit data chain is built up as shown in Figure 30.
Note: The LED_DATA signal is now inverted from the state in Mode 0.
Table 31 Mode 0 Clock Cycle to Data Bit Relationship
LED_CLK Cycle LED_DATA
Name LED_DATA Description
1START BIT
This bit synchronizes the M5450 device to expect 35 bits of data to
follow.
2:3 PAD BITS
These bits are used only as fillers in the data stream to extend the
length from the actual 12-bit LED DATA to the required 18-bit frame
length. These bits should always be a logic 0.
4:15 LED DATA 1-12
These bits are the actual data transmitted to the M5450 device. The
decode for each individual bit in each mode is defined in Table 33 on
page 113.
The data is TRUE. Logic 1 (LED ON) = High
36:38 PAD BITS
These bits are used as fillers in the data stream to extend the length
from the actual 30-bit LED DATA to the required 36-bit frame length.
These bits should always be a logic 0.
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5.8.5 Power-On, Reset, Initialization
The LED interface is disabled at power-on or reset. The system software controller must
enable the LED interface. The internal state machines and output signals are held in reset
until the full IXF1104 4-Port Gigabit Ethernet Media Access Controller device configuration
is completed. This is done by setting the LED_ENABLE bit to a logic 1 (see Table 108, LED
Control ($0x509), on page 182). The power-on default for this bit is logic 0.
5.8.6 LED DATA Decodes
The data transmitted on the LED_DATA line is determined by programming the global
operation mode as either fiber or copper. Table 33 shows the data decode of the data for
both fiber and copper MACs.
Note: The data decode of the LED bits is independent of the Physical mode selection.
Figure 30 Mode 1 Timing
122 23 24 25 26 27 28 29 30
13534333231302928272625234
LED_CLK
LED_DATA
LED_LATCH
Table 32 Mode 1 Clock Cycle to Data Bit Relationship
LED_CLK Cycle LED_DATA Name LED_DATA Description
1START BIT
This bit has no meaning in Mode 1 operation and is shifted out of
the 16-stage shift register chain before the LED_LATCH signal is
asserted.
2:3 PAD BITS
These bits have no meaning in Mode 1 operation and are shifted
out of the 16-stage shift register chain before the LED_LATCH
signal is asserted.
4:15 LED DATA 1-12
These bits are the actual data to be transmitted to the 16-stage shift
register chain. The decode for each bit in each mode is defined in
Table 33 on page 113.
The data is INVERTD. Logic 1 (LED ON) = Low.
36:38 PAD BITS
These bits have no meaning in Mode 1 operation and are latched
into positions 31 and 32 in the shift register chain. These bits are
not considered as valid data and should be ignored. They should
always be a Logic 0 = High.
Table 33 LED_DATA# Decodes (Sheet 1 of 2)
LED_DATA# MAC Port # Fiber Designation Copper Designation
1
0
Rx LED—Amber Link LED—Amber
2 Rx LED—Green Link LED—Green
3 TX LED—Green Activity LED—Green
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5.8.6.1 LED Signaling Behavior
Operation in each mode for the decoded LED data in Table 33 is detailed in Table 34 and
Table 35.
5.8.6.1.1 Fiber LED Behavior
4
1
Rx LED—Amber Link LED—Amber
5 Rx LED—Green Link LED—Green
6 TX LED—Green Activity LED—Green
7
2
Rx LED—Amber Link LED—Amber
8 Rx LED—Green Link LED—Green
9 TX LED—Green Activity LED—Green
10
3
Rx LED—Amber Link LED—Amber
11 Rx LED—Green Link LED—Green
12 TX LED—Green Activity LED—Green
Table 33 LED_DATA# Decodes (Sheet 2 of 2)
LED_DATA# MAC Port # Fiber Designation Copper Designation
Table 34 LED Behavior (Fiber Mode)
Type Status Description
RXLED
Off Synchronization occurs but no packets are received
and Link LED Enable ($0x502) is not set.
Amber On RX Synchronization has not occurred or no optical
signal exists.
Amber Blinking
The port has remote fault and Link LED Enable
($0x502) is not set (based on remote fault bit setting
received in Rx_Config word).
Green On RX Synchronization occurs and Link LED Enable
($0x502) bit is set.
Green Blinking RX Synchronization occurs and the port is receiving
data.
TXLED
Off The port is not transmitting data or Link LED Enable
($0x502) is not set.
Green Blinking The port is transmitting data and Link LED Enable
($0x502) bit is set
Note: Table 34 assumes the port is enabled in the LED Control ($0x509). If a port is not enabled, all the
LEDs for that port will be off. If the LEDs are not enabled, all of the LEDs will be off.
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5.8.6.1.2 Copper LED Behavior
5.9 CPU Interface
The CPU interface block provides access to registers and statistics in the IXF1104 MAC.
The interface is asynchronous externally and operates within the 125 MHz clock domain
internally. The interface provides access to the following:
• Receive statistics registers
• Transmit statistics registers
• Receive FIFO registers
• Transmit FIFO registers
• Global configuration and control registers
• MAC_0 to MAC_3 registers
The CPU interface width can be configured with the two strap signals (UPX_WIDTH[1:0]) to
operate as an 8-bit, 16-bit, or 32-bit bus. All internal accesses to registers are 32-bit (4, 2, or
1 data cycles respectively are required to fully access a register). When operating in 8-bit or
16-bit mode, read data for bytes [3:1] is strobed into read holding registers when byte [0] is
read. Subsequent reads of bytes {1, 2, 3} in byte mode or of bytes {2,3} in 16-bit mode are
supplied from the holding register independent of the upper address bits. On write accesses
in 8-bit mode, the data of bytes {0, 1, 2} is similarly captured in internal write holding
registers and the complete 32-bit write is committed when byte[3] is written to the IXF1104
MAC. When writing in 16-bit mode, bytes [1:0] are captured, and the double-word is
committed when bytes [3:2] are written. The complete address for write is ignored (except
for the write which causes the commit operation).
Table 35 LED Behavior (Copper Mode)
Type Status Description
Link LED
Off Port does not have a remote fault and Table 108, LED
Control ($0x509), on page 182 bit is not set.
Amber On Port has an RGMII RXERR condition detected and
Table 108, LED Control ($0x509), on page 182 bit is set
Amber Blinking Port has a remote fault and Table 110, LED Fault
Disable ($0x50B), on page 183 is not set.
Green On
Table 108, LED Control ($0x509), on page 182 bit is set
and port does not have an RGMII RXERR error or
remote fault condition present.
Activity LED - Green
Off Port is not transmitting and receiving data.
Blinking
Table 108, LED Control ($0x509), on page 182 set: Port
is transmitting and/or receiving.
Table 108, LED Control ($0x509), on page 182 not set:
Port is receiving data.
Note: Table 33, LED_DATA# Decodes assumes the port is enabled in the Table 102, Port Enable ($0x500),
on page 180 and the LEDs are enabled in the Table 108, LED Control ($0x509), on page 182. If a port
is not enabled, all the LEDs for that port are off. If the LEDs are not enabled, all of the LEDs are off.
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5.9.1 Functional Description
5.9.1.1 Read Access
Read access involves the following:
• Detect assertion of asynchronous Read control signal and latch address
• Generate internal Read strobe
• Drive valid data onto processor bus
• Assert asynchronous Ready signal for required length of time
Figure 31 shows the timing of the asynchronous interface for Read access.
5.9.1.2 Write Access
Write process involves the following:
• Detect assertion of asynchronous Write control signal and latch address
• Detect de-assertion of asynchronous Write control signal and latch data
• Generate internal Write strobe
• Assert asynchronous Ready signal for required length of time
Figure 32 shows the timing of the asynchronous interface for Write accesses.
Figure 31 Read Timing Diagram - Asynchronous Interface
TCAS TCAH
TCRR
TCDRS
TCDRH
TCDRD
TCRH
UPX_ADD[10:0]
UPX_RD_L
UPX_CS_L
UPX_DATA[31:0]
UPX_RDY_L
B5103-01
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5.9.1.3 CPU Timing Parameters
For information on the CPU interface Read and Write cycle AC timing parameters, refer to
Figure 47, CPU Interface Read Cycle AC Timing, on page 142, Figure 48, CPU Interface
Write Cycle AC Timing, on page 143, and Table 53, CPU Interface AC Signal Parameters,
on page 143.
5.9.2 Endian
The Endian of the CPU interface may be changed to allow connection of various CPUs to
the IXF1104 4-Port Gigabit Ethernet Media Access Controller. The Endian selection is
determined by setting the Endian bit in the CPU Interface ($0x508).
The following describes Endianness control:
• There is a byte swapper between the internal 32-bit bus and the external 32-bit bus.
• In 8-bit or 16-bit mode operation, the byte packer/byte unpacker holding registers sink
and source data just like the 32-bit external bus in 32-bit mode.
•The CPU Interface ($0x508) selects Big-Endian or Little-Endian mode.
• The byte swapper causes the behavior seen in Table 36 for accessing a register with
data bits data[31:0].
Figure 32 Write Timing Diagram - Asynchronous Interface
TCAS TCAH
TCWL
TCDWS
TCDWD
TCYD
TCWH
UPX_ADD[10:0]
UPX_WR_L
UPX_CS_L
UPX_DATA[31:0]
UPX_RD_L
TCDWH
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5.10 TAP Interface (JTAG)
The IXF1104 MAC includes an IEEE 1149.1 compliant Test Access Port (TAP) interface
used during boundary scan testing. The interface consists of the following five signals:
• TDI – Serial Data Input
• TMS – Test Mode Select
• TCLK – TAP Clock
• TRST_L – Active Low asynchronous reset for the TAP
• TDO – Serial Data Output
TDI and TMS require external pull-up resistors to float the signals High per the IEEE 1149.1
specification. Pull-ups are recommended on TCLK and TDO. For normal operation,
TRST_L can be pulled Low, permanently disabling the JTAG interface. If the JTAG interface
is used, the TAP controller must be reset as described in Section 5.10.1, TAP State
Machine, on page 118 and returned to a logic High.
5.10.1 TAP State Machine
The TAP signals drive a TAP controller, which implements the 16-state state machine
specified by the IEEE 1149.1 specification. Following power-up, the TAP controller must be
reset by one of following two mechanisms:
• Asynchronous reset
• Synchronous reset
Asynchronous reset is achieved by pulsing or holding TRST_L Low. Synchronous reset is
achieved by clocking TCLK with five clock pulses while TMS is held or floats High. This
ensures that the boundary scan cells do not block the pin to core connections in the
IXF1104 MAC.
Table 36 Byte Swapper Behavior
UPX_BADD
[1:0]
Little Endian Big Endian
32-bit 16-bit 8-bit132-bit 16-bit 8-bit1
UPX_DATA_
[31:0]
UPX_DATA
[15:0]
UPX_DATA
[7:0]
UPX_DATA
[31:0]
UPX_DATA
[15:0]
UPX_DATA
[7:0]
00 [31:0] [15:0] [7:0]
[7:0]
[15:8]
[23:16
[31:24]
[7:0]
[15:8] [7:0]
01 – – [15:8] – – [15:8]
10 – [31:16] [23:16] – [23:16]
[31:24] [23:16]
11 – – [31:24] – – [31:24]
1. In 8-bit mode, data is output in Little Endian format regardless of the IXF1104 MAC Endian setting.
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5.10.2 Instruction Register and Supported Instructions
The instruction register is a 4-bit register that enacts the boundary scan instructions. After
the state machine resets, the default instruction is IDCODE. The decode logic in the TAP
controller selects the appropriate data register and configures the boundary scan cells for
the current instruction. Table 37 shows the supported boundary-scan instructions.
5.10.3 ID Register
The ID register is a 32-bit register. The IDCODE instruction connects this register between
TDI and TDO. See Table 111, JTAG ID ($0x50C), on page 184 for detailed information.
5.10.4 Boundary Scan Register
The Boundary Scan register is a shift register made up of all the boundary scan cells
associated with the device signals. The number, type, and order of the boundary scan cells
are specified in the IXF1104 MAC BSDL file. The EXTEST and SAMPLE instructions
connect this register between TDI and TDO.
5.10.5 Bypass Register
The Bypass register is a 1-bit register that bypasses the IXF1104 MAC to reduce the JTAG
chain length when accessing other devices on the chain besides the IXF1104 MAC. The
BYPASS, HIGHZ, and CLAMP instructions connect this register between TDI and TDO.
5.11 Loopback Modes
The IXF1104 MAC provides two loopback modes for device diagnostic testing when it has
been integrated into a user system. A line-side loopback allows the line-side receive
interface to be looped back to the transmit line-side interface. A SPI3 loopback mode allows
the SPI3 transmit interface to be looped back to the SPI3 receive interface.
The IXF1104 MAC line-side and SPI3 loopback modes are effective diagnostic tools for
validation of system level connectivity and interface compatibility.
In loopback-mode operation, the data path is internally redirected to allow for the data flow
return path. Redirection requires the data path to circumvent resources that are required
during normal traffic flow. For example, while operating in SPI3 loopback mode, the data
path does not pass through the MAC or TX FIFO and those resource features are not used.
The result is a possible degradation of throughput performance and statistical data
accuracy. Cortina recommends that loopback modes be used for diagnostic purposes only.
Table 37 Instruction Register Description
Instruction Code Description Data Register
BYPASS 1111 1-bit Bypass Bypass
EXTEST 0000 External Test Boundary Scan
SAMPLE 0001 Sample Boundary Boundary Scan
IDCODE 0110 ID Code Inspection ID
HIGHZ 0101 Float Boundary Bypass
CLAMP 0111 Clamp Boundary Bypass
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5.11.1 SPI3 Interface Loopback
To provide a diagnostic loopback feature on the SPI3 interface, it is possible to configure the
IXF1104 MAC to loop back any data written to the IXF1104 MAC through the SPI3 transmit
interface back to the SPI3 receive interface. This is accomplished using the data path
shown in Figure 33.
Note: Loopback packets also appear on the line side TX interface.
Note: There is a restriction when using this loopback mode. At least one clock cycle is required
between a TEOP assertion and a TSOP assertion. This is required when the pre-pend
feature of the receive FIFO is enabled to allow the addition of the extra two bytes to the data
sent on the transmit interface. Where the pre-pend feature has not been enabled, data can
be sent back-to-back on the transmit SPI3 interface with TSOP following TEOP on the next
cycle.
To configure the IXF1104 MAC to use the SPI3 loopback mode, the RX FIFO SPI3
Loopback Enable for Ports 0 - 3 ($0x5B2) must be configured. Each IXF1104 MAC port has
a unique bit in this register designated to control loopback. It is possible to have individual
ports in a loopback mode while other ports continue to operate in a normal mode.
5.11.2 Line Side Interface Loopback
To provide a diagnostic loopback feature on the line-side interfaces, the IXF1104 MAC can
be configured to loop back any data received by the IXF1104 MAC through one of the line
interfaces back to the corresponding transmit line interface. This is done by using the data
path shown in Figure 34. The line-side interface can be either SerDes, RGMII or GMII.
Please note that it is not possible to loop one line-side interface back to a different one (for
example, Rx SerDes looped back to transmit RGMII).
Figure 33 SPI3 Interface Loopback Path
SPI3 Interface
Block
TX
RX
Line Side
Interface
MAC
TX FIFO
RX FIFO
B3229-01
SPI3 Internal Loopback
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When the IXF1104 MAC is configured in this loopback mode, all of the MAC functions and
features are available, including flow control and pause-packet generation.
To configure the IXF1104 MAC to use the line-side loopback mode, the Loop RX Data to TX
FIFO (Line-Side Loopback) Ports 0 - 3 ($0x61F) must be configured. Each IXF1104 MAC
port has a unique bit in this register designated to control the loopback. It is possible to have
individual ports in a loopback mode while other ports continue to operate in a normal mode.
Note: Line side interface loopback packets also appear at the SPI3 interface.
5.12 Clocks
The IXF1104 MAC system interface has several reference clocks, including the following:
• SPI3 data path input clocks
• RGMII input and output clocks
• MDIO output clock
• JTAG input clock
•I
2C clock
• LED output clock.
This section details the unique clock source requirements.
5.12.1 System Interface Reference Clocks
The following system interface clock is required by the IXF1104 MAC:
• CLK125
5.12.1.1 CLK125
The system interface clock, which supplies the clock to the majority of the internal circuitry,
is the 125 MHz clock. The source of this clock must meet the following specifications:
• 3.3 V CMOS drive
Figure 34 Line Side Interface Loopback Path
RX FIFO
SPI3 Interface
Block
TX
RX
Line Side
Interface
MAC
TX FIFO
B3230-01
Line Side Internal Loopback
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• +/- 50 ppm
• Maximum duty cycle distortion 40/60
5.12.2 SPI3 Receive and Transmit Clocks
The IXF1104 MAC transmit clock requirements include the following:
• 3.3 V LVTTL drive
• +/- 50 ppm
• Maximum frequency of 133 MHz in MPHY mode
• Maximum frequency of 125 MHz in SPHY mode
• Maximum duty cycle distortion 45/55
The IXF1104 MAC meets the following specifications for the receive clock:
• 3.3 V LVTTL drive
• +/- 50 ppm
• Maximum frequency of 133 MHz in MPHY mode
• Maximum frequency of 125 MHz in SPHY mode
• Maximum duty cycle distortion 45/55
5.12.3 RGMII Clocks
The RGMII interface is governed by the Hewlett-Packard* 1.2a specification. The IXF1104
MAC compliant to this specification with the following:
• 2.5 V CMOS drive
• Maximum duty cycle distortion 40/60
• +/- 100 ppm
• 125 MHz for 1000 Mbps, 25 MHz for 100 Mbps and 2.5 MHz for 10 Mbps
5.12.4 MDC Clock
The IXF1104 MAC supports the IEEE 802.3 MII Management Interface, also known as the
Management Data Input/Output (MDIO) Interface. The IXF1104 MAC meets the following
specifications for this clock:
• 2.5 V CMOS drive
• 2.5/18 MHz operation (selectable by the MDC speed bit in the MDIO Control ($0x683))
• 50/50 duty cycle for 2.5 MHz operation
• 43/57 duty cycle for 18 MHz operation
5.12.5 JTAG Clock
The IXF1104 MAC supports JTAG. The source of this clock must meet the following
specifications:
• 3.3 V CMOS drive
• Maximum clock frequency 11 MHz
• Maximum duty cycle distortion 40/60
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5.12.6 I2C Clock
The IXF1104 MAC supports a single-output I2C clock to support all ten Optical Module
interfaces. The IXF1104 MAC meets the following specifications for this clock:
• 2.5 V CMOS drive
• Maximum clock frequency of 100 KHz
5.12.7 LED Clock
The IXF1104 MAC supports a serial LED data stream and meets the following specifications
for this clock:
• 2.5 V CMOS drive
• Maximum frequency of 720 Hz
• Maximum duty cycle distortion 50/50
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6.0 Applications
6.1 Change Port Mode Initialization Sequence
Use the change port mode initialization sequence after power-up and anytime a port is
configured into or switching between fiber or copper mode, switching to/from RGMII and
GMII modes, or switching speeds and duplex in RGMII mode.
The following sequence applies to all four ports and can be done simultaneously for all ports
or as a subset of the ports.
1. Place the MAC in reset for the port(s) which require a change by asserting (set to 1) the
MAC Soft Reset ($0x505).
2. Place the TX FIFO in reset for the port(s) which require a change by asserting (set to 1)
the TX FIFO Port Reset ($0x620).
3. Disable the port(s) which require change by de-asserting (set to 0) the appropriate bits
in the Port Enable ($0x500).
4. Wait 1 μs.
5. De-assert (set to 0) Table 151, Clock and Interface Mode Change Enable Ports 0 - 3
($0x794), on page 210 for the ports being changed.
6. Set the speed, mode, and duplex as follows for the ports being changed:
a. Copper mode:
Select copper mode for Interface Mode ($0x501) ports.
Set the per-port MAC IF Mode and RGMII Speed ($ Port_Index + 0x10) to the
appropriate speed and RGMII/GMII interface setting.
Set the per-port Desired Duplex ($ Port_Index + 0x02).
Note: Half-duplex is supported only when RGMII 10 Mbps or 100 Mbps is selected
in the MAC IF Mode and RGMII Speed ($ Port_Index + 0x10).
b. Fiber mode:
Select fiber mode by setting the appropriate bit to 0 in the Interface Mode ($0x501)
ports.
7. Assert (set to 1) Clock and Interface Mode Change Enable Ports 0 - 3 ($0x794) for the
ports being changed.
8. Wait 1 μs.
9. De-assert (set to 0) MAC Soft Reset ($0x505) for the ports being changed.
10. De-assert (set to 0) TX FIFO Port Reset ($0x620) for the ports being changed.
11. Wait 1 to 2 μs.
12. Set the Diverse Config Write ($ Port_Index + 0x18) to the appropriate value as follows:
a. Copper mode:
Write the reserved bits to the default value.
Enable packet padding and CRC appending on transmitted packets in bits 6 and 7,
as needed.
Set bit 5 to 0x0.
b. Fiber Mode:
Write the reserved bits to the default value.
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Enable Packet padding and CRC Appending on transmitted packets in bits 6 and 7,
as needed.
Set bit 5 to 1 to enable auto-negotiation.
Set bit 5 to 0 to enable forced mode operation.
13. Assert (set to 1) Port Enable ($0x500).
14. Wait 1 to 2 μs.
15. Perform additional device configurations, as needed.
6.2 Disable and Enable Port Sequences
Cortina recommends the following sequences to disable and enable individual ports, and for
dropped links. When a link is dropped, Cortina recommends the port be completely reset
and flushed to remove packet fragments that may interfere with the auto-negotiation
process on link recovery.
6.2.1 Disable Port Sequence
Use the following sequence to disable an individual port:
1. Disable the port using MAC port enable/disable bits [Port Enable ($0x500) Bits (3-0)].
2. Apply TX FIFO soft reset [TX FIFO Port Reset ($0x620) Bits(3-0)].
3. Introduce some delay to allow completion of packet transmission (not necessary if link
is dropped).
4. Flush TX [Flush TX ($ Port_Index + 0x11) Bit 0].
5. Apply MAC soft reset [MAC Soft Reset ($0x505) Bits(3-0)].
6. Apply RX FIFO soft reset [RX FIFO Port Reset ($0x59E) Bits(3:0)].
6.2.2 Enable Port Sequence
Use the following sequence to enable an individual port:
1. Enable the port(s) using MAC port enable/disable bits [Port Enable ($0x500) Bits (3-0)].
2. Disable TX FIFO soft reset [TX FIFO Port Reset ($0x620) Bits(3-0)].
3. Reset flush TX [Flush TX ($ Port_Index + 0x11) Bit 0].
4. Disable MAC soft reset [MAC Soft Reset ($0x505), on page 181 Bits(3-0)].
5. Disable RX FIFO soft reset [RX FIFO Port Reset ($0x59E) Bits(3:0)].
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7.0 Electrical Specifications
Table 38 through Table 57, LED Interface AC Timing Parameters, on page 147 and Figure
35, SPI3 Receive Interface Timing, on page 131 through Figure 52, LED AC Interface
Timing, on page 147 represent the target specifications of the following IXF1104 MAC
interfaces:
— SPI3
—JTAG
—MDIO
— Pause Control
—CPU
—LED
—System
— GMII and RGMII
—SerDes
— Optical Module
These specifications are not guaranteed and are subject to change without notice. Minimum
and maximum values listed in Table 40, DC Specifications, on page 128 through Table 57,
LED Interface AC Timing Parameters, on page 147 apply over the recommended operating
conditions specified in Table 39.
Table 38 Absolute Maximum Ratings
Parameter Symbol Min Max Units Comments
Supply voltage
VDD -0.3 2.2 volts Core digital power
VDD2, VDD3 -0.3 4.25 volts I/O digital power
VDD4, VDD5 -0.3 4.25 volts I/O digital power
AVDD1P8_1/2 -0.3 2.2 volts Analog power
AVDD2P5_1/2 -0.3 4.25 volts Analog power
Operating
temperature
Ambient TOPA -40 +85 °C Copper mode
Ambient TOPA 0.0 +70 °C Fiber mode
Storage temperature TST -40 +150 °C –
Caution: Exceeding these values may cause permanent damage to the device.
Functional operation under these conditions is not implied. Exposure to
maximum rating conditions for extended periods may affect device
reliability.
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Table 39 Recommended Operating Conditions
Parameter Symbol Min Typ Max Units
Recommended supply voltage
VDD 1.65 – 1.95 Volts
VDD2, VDD3 3.0 – 3.6 Volts
VDD4, VDD5 2.3 – 2.7 Volts
AVDD1P8_1
AVDD1P8_2 1.65 – 1.95 Volts
AVDD2P5_1
AVDD2P5_2 2.3 – 2.7 Volts
Operating Current
SerDes Operation
Transmitting and
receiving in
1000 Mbps mode
VDD
AVDD1P8_1
AVDD1P8_2
– 0.780 – Amps
VDD4
VDD5
AVDD2P5_1
AVDD2P5_2
– 0.050 – Amps
VDD2, VDD3 – 0.246 – Amps
Operating Current
RGMII Operation
Transmitting and
receiving in
1000 Mbps mode
VDD
AVDD1P8_1
AVDD1P8_2
– 0.757 – Amps
VDD4
VDD5
AVDD2P5_1
AVDD2P5_2
– 0.224 – Amps
VDD2, VDD3 – 0.208 0.235 Amps
Recommended
operating
temperature
Ambient TOPA 0 – 70 °C
Case with heat
sink TOPC-HS 0 – 122 °C
Case without heat
sink TOPC-NHS 0 – 121 °C
Power
consumption
SerDes Operation
Transmitting and
receiving in
1000 Mbps mode
– – 2.23 2.72 Watts
RGMII Operation
Transmitting and
receiving in
1000 Mbps mode
– – 2.84 3.4 Watts
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7.1 DC Specifications
The IXF1104 MAC supports the following I/O buffer types:
• 2.5 V CMOS
• 3.3 V LVTTL
•SerDes
See Section 5.1.7, Packet Buffer Dimensions, on page 76 for additional information
regarding I/O buffer types. The related driver characteristics are described in this section.
Note: All 3.3V LVTTL input buffers are 5V tolerant, and all 2.5V CMOS input buffers are 3.3V
LVTTL level tolerant.
Table 40 DC Specifications
Parameter Symbol Min Typ Max Units Comments
2.5 V CMOS I/O Cells
Input High voltage VIH 1.7 – – V 2.5 V I/Os
Input low voltage VIL – – 0.7 V 2.5 V I/Os
Output High voltage VOH 2.0 – – V 2.5 V I/Os
Output low voltage VOL – – 0.4 V 2.5 V I/Os
3.3 V I/O Cells
Input High voltage VIH 2.0 – – V 3.3 V LVTTL I/Os
Input low voltage VIL – – 0.8 V 3.3 V LVTTL I/Os
Output High voltage VOH 2.4 – – V 3.3 V LVTTL I/Os
Output low voltage VOL – – 0.4 V 3.3 V LVTTL I/Os
Table 41 SerDes Transmit Characteristics (Sheet 1 of 2)
Parameter Symbol
Normalized
Power Drive
Settings1Min Typ Max Units Comments
Transmit differential
signal level TxDfPP
0.50 180 230 325
mVpp diff
AVDD1P8_2
terminated to 1.8V;
Rload = 50 Ω
1.00 350 440 700
1.33 425 580 900
2.00 600 770 1050
Transmit common
mode voltage range TxCMV
0.50 1300 160
01940
mV
AVDD1P8_2
terminated to 1.8V;
RLoad = 50 ohms; FIR
coeffs = 0
1.00 1000 140
01870
1.33 800 130
01825
2.00 700 1100 1760
Differential signal
rise/fall time
Diff rise/
fall 1.00 60 96 132 ps Rload = 50 Ω; 20% to
80% max
1. Refer to Section 5.6.2.2, Transmitter Programmable Driver-Power Levels, on page 100.
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7.1.1 Undershoot / Overshoot Specifications
The overshoot figures given in this section represent the maximum voltage that can be
applied without affecting the reliability of the device (see Table 43).
Caution: If these limits are exceeded, damage to the device will occur.
Differential output
impedance TxDiffZ – 60 105 150 Ω diff Nominal value = 100 Ω
differential
Receiver differential
voltage requirement
at center of receive
eye
RxDiffV – 200 – – mVp-p
diff –
Receiver common
mode voltage range RxCMV – 900 127
51650 mV –
Receiver termination
impedance RxZ – 40 51 62.5 Ω–
Signal detect level RxSigDet – 50 125 200 mVp-
pdiff –
Table 41 SerDes Transmit Characteristics (Sheet 2 of 2)
Parameter Symbol
Normalized
Power Drive
Settings1Min Typ Max Units Comments
1. Refer to Section 5.6.2.2, Transmitter Programmable Driver-Power Levels, on page 100.
Table 42 SerDes Receive Characteristics
Parameter Symbol
Normalized
Power Drive
Settings
Min Typ Max Units Comments
Receiver differential
voltage requirement
at center of receive
eye
RxDiffV – 200 – – mVp-p
diff –
Receiver common
mode voltage range RxCMV – 900 1275 1650 mV –
Receiver termination
impedance RxZ – 40 51 62.5 Ω–
Signal detect level RxSigDet – 50 125 200 mVp-pdiff –
Table 43 Undershoot / Overshoot Limits
Pin Type Undershoot Overshoot
2.5 V CMOS -0.60 V 3.9 V
3.3 V LVTTL -0.60 V 3.9 V
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7.1.2 RGMII Electrical Characteristics
The RGMII signals (including MDIO/MDC) are based on 2.5V CMOS interface voltages, as
defined by JEDEC EIA/JESD8-5 (see Table 44).
7.2 SPI3 AC Timing Specifications
7.2.1 Receive Interface Timing
Figure 35 and Table 45 illustrate and provide SPI3 receive interface timing information.
Table 44 RGMII Power
Symbol Parameter Conditions Min Max Units
VOH Output High Voltage IOH = -1.0 MA; VDD = MIN 2.0 VDD +.3 V
VOL Output Low Voltage IOL = 1.0 MA; VDD = MIN GND -.3 0.40 V
VIH Input High Voltage VIH > VIH_MIN; VDD = MIN – VDD +.3 V
VIL Input Low Voltage VIL < VIL_MAX; VDD = MIN –.70V
IIH Input High Current VDD = MAX; VIN = 2.5V – 15 μA
IIL Input Low Current VDD = MAX; VIN = 0.4V -15 – μA
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Figure 35 SPI3 Receive Interface Timing
RFCLK
RENB
RDAT[31:0]
RPRY
RMOD
RSOP
REOP
RERR
RVAL
RSX
THrenb
TSrenb
TPrdat
TPrprty
TPrmod
TPrsop
TPreop
TPrerr
TPrval
TPrsx
Table 45 SPI3 Receive Interface Signal Parameters (Sheet 1 of 2)
Symbol Parameter Min Max Units
– RFCLK frequency 90 133 MHz
– RFCLK duty cycle 45 55 %
Tsrenb RENB setup time to RFCLK 1.8 – ns
Threnb RENB hold time to RFCLK 0.5 – ns
TPrdat RFCLK High to RDAT valid 1.5 3.7 ns
TPrprty RFCLK High to RPRTY valid 1.5 3.7 ns
TPrsop RFCLK High to RSOP valid 1.5 3.7 ns
Notes: Receive I/O Timing
1. When a setup time is specified between an input and a clock, the setup time is the time in nanoseconds
from the 1.4-volt point of the input to the 1.4-volt point of the clock.
2. When a hold time is specified between an input and a clock, the hold time is the time in nanoseconds from
the 1.4-volt point of the clock to the 1.4-volt point of the input.
3. Output propagation time is the time in nanoseconds from the 1.4-volt point of the reference signal to the
1.4-volt point of the output.
4. Maximum propagation delays are measured with a 30 pF load when operating OIF-SPI3 standard 104
MHz. Over-clocked rates of 125 MHz or higher are measured using a load of 20 pF.
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TPreop RFCLK High to REOP valid 1.5 3.7 ns
TPrmod RFCLK High to RMOD valid 1.5 3.7 ns
TPrerr RFCLK High to RERR valid 1.5 3.7 ns
TPrval RFCLK High to RVAL valid 1.5 3.7 ns
TPrsx RFCLK High to RSX valid 1.5 3.7 ns
Table 45 SPI3 Receive Interface Signal Parameters (Sheet 2 of 2)
Symbol Parameter Min Max Units
Notes: Receive I/O Timing
1. When a setup time is specified between an input and a clock, the setup time is the time in nanoseconds
from the 1.4-volt point of the input to the 1.4-volt point of the clock.
2. When a hold time is specified between an input and a clock, the hold time is the time in nanoseconds from
the 1.4-volt point of the clock to the 1.4-volt point of the input.
3. Output propagation time is the time in nanoseconds from the 1.4-volt point of the reference signal to the
1.4-volt point of the output.
4. Maximum propagation delays are measured with a 30 pF load when operating OIF-SPI3 standard 104
MHz. Over-clocked rates of 125 MHz or higher are measured using a load of 20 pF.
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7.2.2 Transmit Interface Timing
Figure 36 and Table 46 illustrate and provide SPI3 transmit interface timing information.
Figure 36 SPI3 Transmit Interface Timing
TFCLK
TENB
TDAT[31:0]
TPRTY
TMOD[1:0]
TSOP
TEOP
TERR
TADR
TSX
THtenbTStenb
THtdatTStdat
THtprtyTStrpty
THtmodTStmod
THtsopTStsop
THteopTSteop
THterrTSterr
THtadrTStadr
THtsxTStsx
DTPA
TPdtpa
STPA
TPstpa
PTPA
TPptpa
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Table 46 SPI3 Transmit Interface Signal Parameters
Symbol Parameter Min Max Units
– TFCLK frequency – 133 MHz
– TFCLK duty cycle 45 55 %
TStenb TENB setup time to TFCLK 1.8 – ns
THtenb TENB hold time to TFCLK 0.5 – ns
TStdat TDAT[31:0] setup time to TFCLK 1.8 – ns
THtdat TDAT[31:0} hold time to TFCLK 0.5 – ns
TStprty TRPTY setup time to TFCLK 1.8 – ns
THtprty TPRTY hold time to TFCLK 0.5 – ns
TStsop TSOP setup time to TFCLK 1.8 – ns
THtsop TSOP hold time to TFCLK 0.5 – ns
TSteop TEOP setup time to TFCLK 1.8 – ns
THteop TEOP hold time to TFCLK 0.5 – ns
TStmod TMOD setup time to TFCLK 1.8 – ns
THtmod TMOD hold time to TFCLK 0.5 – ns
TSterr TERR setup time to TFCLK 1.8 – ns
THterr TERR hold time to TFCLK 0.5 – ns
TStsx TSX setup time to TFCLK 1.8 – ns
THtsx TSX hold time to TFCLK 0.5 – ns
TStadr TADR setup time to TFCLK 1.8 – ns
THtadr TADR hold time to TFCLK 0.5 – ns
TPdtpa TFCLK High to DTPA valid 1.5 3.7 ns
TPstpa TFCLK High to STPA valid 1.5 3.7 ns
TPptpa TFCLK High to PTPA valid 1.5 3.7 ns
Notes: Transmit I/O Timing:
1. When a setup time is specified between an input and a clock, the setup time is the time in nanoseconds
from the 1.4 V point of the input to the 1.4-volt point of the clock.
2. When a hold time is specified between an input and clock, the hold time is the time in nanoseconds from
the 1.4 V point of the clock to the 1.4-volt point of the input.
3. Output propagation delay time is the time in nanoseconds from the 1.4 V point of the reference signal to
the 1.4 V point of the output.
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7.3 RGMII AC Timing Specification
Figure 37 and Table 47 provide RGMII interface timing parameters.
Figure 37 RGMII Interface Timing
B3251-01
TSkewT
TXC
(at Transmitter)
TXC
(at Receiver)
TD[3:0]
TX_CTL[n]
TSkewR
TD[3:0] TD[7:4]
TXEN TXERR
TSkewT
RXC
(at Transmitter)
RXC
(at Receiver)
RD[3:0]
RX_CTL
TSkewR
RD[3:0] RD[7:4]
RXDV RXERR
Table 47 RGMII Interface Timing Parameters
Symbol Parameter Min Typ Max Unit
TskewT Data-to-Clock Output Skew (at Transmitter) -500 0 500 ps
TskewR Data-to-Clock Input Skew (at Receiver)11–2.8ns
Tcyc Clock Cycle Duration27.2 8 8.8 ns
Duty_T Duty Cycle for Gigabit245 50 55 %
Duty_G Duty Cycle for 10/100T340 50 60 %
Tr/Tf Rise/Fall Time (20–80%) – – .75 ns
1. This implies that PC board design requires clocks to be routed so that an additional trace delay of greater
than 1.5 ns is added to the associated clock signal.
2. For 10 Mbps and 100 Mbps Tcyc scales to 400 ns +/– 40 ns and 40 ns +/– 4 ns respectively.
3. Duty cycle may be stretched/shrunk during speed changes or while transitioning to a received packet’s
clock domain, as long as minimum duty cycle is not violated and stretching occurs for no more than three
Tcyc of the lowest speed transitioned between.
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7.4 GMII AC Timing Specification
7.4.1 1000 Base-T Operation
Figure 38 and Figure 39 and Table 48 and Table 49 provide GMII AC timing specifications.
7.4.1.1 1000 BASE-T Transmit Interface
Figure 38 1000BASE-T Transmit Interface Timing
B0634-01
GTX_CLK
TXEn
TXD[7:0]
TXER
CPS
t1
t3
t4
t2
Table 48 GMII 1000BASE-T Transmit Signal Parameters
Symbol Parameter Min Typ1Max Unit2
t1 TXD[7:0], TXEN, TXER Set-up to TXC High 2.5 – – ns
t2 TXD[7:0], TXEN, TXER Hold from TXC High 0.5 – – ns
t3 TXEN sampled to CRS asserted – – 16 BT
t4 TXEN sampled to CRS de-asserted – – 16 BT
1. Typical values are at 25oC and are for design aid only; not guaranteed and not subject to production
testing.
2. Bit Time (BT) is the duration of one bit as transferred to/from the PHY and is the reciprocal of bit rate. BT
for 1000BASE-T = 10-9 or 1 ns.
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7.4.1.2 1000BASE-T Receive Interface
Figure 39 1000BASE-T Receive Interface Timing
RXDV
RXD[7:0]
CRS
t1
t2
RX_CLK
Table 49 GMII 1000BASE-T Receive Signal Parameters
Symbol Parameter Min Typ1Max Unit2
t1 RXD[7:0], RX_DV, RXER Setup to Rx_CLK High 2.0 – – ns
t2 RXD[7:0], RX_DV, RXER Hold after Rx_CLK High 0.0 – – ns
1. Typical values are at 25oC and are for design aid only; not guaranteed and not subject to production
testing.
2. Bit Time (BT) is the duration of one bit as transferred to/from the PHY and is the reciprocal of bit rate. BT
for 1000BASE-T = 10-9 or 1 ns.
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7.5 SerDes AC Timing Specification
Figure 40 SerDes Timing Diagram
Table 50 SerDes Timing Parameters
Symbol Parameter Min Max Units
Tt Transmit eye width 800 – pS
Rt Receiver eye width 280 – pS
Tv Transmit amplitude 1000 – mV
Rv Receiver amplitude 200 – mV
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7.6 MDIO AC Timing Specification
The MDIO Interface on the IXF1104 MAC can operate in two modes – low-speed and high-
speed. In low-speed mode, the MDC clock signal operates at a frequency of 2.5 MHz. In
high-speed mode, the MDC clock signal operates at a frequency of 18 MHz. (See Figure 41
through Figure 44 and Table 51.)
7.6.1 MDC High-Speed Operation Timing
7.6.2 MDC Low-Speed Operation Timing
Figure 41 MDC High-Speed Operation Timing
24 ns
(3 X 125 MHz clocks)
32 ns
(4 X 125 MHz clocks)
MDC
56 ns (17.85 MHz)
Figure 42 MDC Low-Speed Operation Timing
200 ns
(25 X 125 MHz clocks)
200 ns
(25 X 125 MHz clocks)
MDC
400 ns (2.5 MHz)
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7.6.3 MDIO AC Timing
Figure 43 MDIO Write Timing Diagram
t1
MDC
MDIO
t2
Vih
Vil
Figure 44 MDIO Read Timing Diagram
t3
MDC
MDIO
Vih
Table 51 MDIO Timing Parameters
Parameter Symbol Min Typ1Max Units Test Conditions
MDIO Setup before MDC. t1 10 – – ns MDC = 17.8 MHz
10 – – ns MDC = 2.5 MHz
MDIO Hold after MDC. t2 10 – – ns MDC = 17.8 MHz
10 – – ns MDC = 2.5 MHz
MDC to MDIO Output delay t3 0 – 42 ns MDC = 17.8 MHz
0 – 300 ns MDC = 2.5 MHz
1. Typical values are at 25 oC and are for design aid only; not guaranteed and not subject to production
testing.
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7.7 Optical Module and I2C AC Timing Specification
7.7.1 I2C Interface Timing
Figure 45 and Figure 46 illustrate bus timing and write cycle, and Table 52 shows the I2C
Interface AC timing characteristics.
Figure 45 Bus Timing Diagram
I2C_Clk
I2C_Data Out
tDH
tSV.SAT
tAA
tBUF
tHD.STA
tHIGH
tR
tSU.STO
tSU.DAT
tHD.DAT
tLOW
tF
I2C_Data In
tLOW
Figure 46 Write Cycle Diagram
ACK
8th
BIT
WORD n
I2C_Clk
I2C_Data
STOP
CONDITION
START
CONDITION
tWR
(1)
Table 52 I2C AC Timing Characteristics (Sheet 1 of 2)
Symbol Parameter Min Max Units
fSCL Clock frequency - 100 kHz
tLOW Clock pulse width low 4.7 µs
tHIGH Clock pulse width high 4.0 µs
tINoise suppression 100 µs
tAA Clock low to data valid out 0.1 4.5 µs
tBUF Time the bus must be free before a new transmission
starts 4.7 - µs
tHD.STA Start hold time 4.0 - µs
tSU.STA Start setup time 4.7 – µs
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7.8 CPU AC Timing Specification
7.8.1 CPU Interface Read Cycle AC Timing
Figure 47, Figure 48, and Table 53 illustrate the CPU interface read and write cycle AC
timing.
tHD.DAT Data in hold time 0 – µs
tSU.DAT Data in setup time 200 – ns
tRInputs rise time – 1.0 µs
tFInputs fall time – 300 ns
tSU.STO Stop setup time 4.7 – µs
tDH Data out hold time 100 – ns
tWR Write cycle time – 10 ms
Table 52 I2C AC Timing Characteristics (Sheet 2 of 2)
Symbol Parameter Min Max Units
Figure 47 CPU Interface Read Cycle AC Timing
TCAS TCAH
TCRR
TCDRS
TCDRH
TCDRD
TCRH
UPX_ADD[10:0]
UPX_RD_L
UPX_CS_L
UPX_DATA[31:0]
UPX_RDY_L
B5103-01
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7.8.2 CPU Interface Write Cycle AC Timing
Figure 48 CPU Interface Write Cycle AC Timing
TCAS TCAH
TCWL
TCDWS
TCDWD
TCYD
TCWH
UPX_ADD[10:0]
UPX_WR_L
UPX_CS_L
UPX_DATA[31:0]
UPX_RD_L
TCDWH
Table 53 CPU Interface AC Signal Parameters
Symbol Parameter Min Max
Tcas Address, chip select setup time 5 ns –
Tcah Address, chip select hold time 10 ns –
Tcrr Ready assertion to read de-assertion 10 ns –
Tcrh Read High width 24 ns –
Tcdrs Read data setup time to ready assertion 10 ns –
Tcdrh Read data hold time after read de-assertion 8 ns –
Tcdrd Read data driving delay 24 ns 355 ns
Tcwl Write assertion width 40 ns –
Tcwh Ready assertion to write assertion 16 ns –
Tcdws Write data setup to write de-assertion 10 ns –
Tcdwh Write data hold time after ready assertion 5 ns –
Tcdwd Write data sampling delay 8 ns 40 ns
Tcyd Ready width in write cycle 24 ns 40 ns
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7.9 Transmit Pause Control AC Timing Specification
Figure 49 and Table 54 show the pause control AC timing specifications. The Pause Control
interface operates as an asynchronous interface relative to the main system clock
(CLK125). There is, however, a relationship between the TXPAUSEADD bus and the strobe
signal (TXPAUSEFR).
Figure 49 Pause Control Interface Timing
TxPauseAdd[1:0]
TxPauseFr
Tsu(min) = 16 ns Thold(min) = 16 ns
Tpw(min) = 16 ns
000 : XON packet on all ports
001 : XOFF Port0
010 : XOFF Port1
011 : XOFF Port2
100 : XOFF Port3
110-101 : Reserved
111 : XOFF on all ports
TXPAUSEADD[2:0]
Table 54 Transmit Pause Control Interface Timing Parameters
Symbol Parameter Min Max Units
Tsu TXPAUSEADD stable prior to TXPAUSEFR High 16 – ns
Tpw TXPAUSEFR pulse width 16 – ns
Thold TXPAUSEADD stable after TXPAUSEFR High 16 – ns
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7.10 JTAG AC Timing Specification
Figure 50 and Table 55 provide the JTAG AC timing specifications.
Figure 50 JTAG AC Timing
Table 55 JTAG AC Timing Parameters
Symbol Parameter Min Max Units
Tjc TCLK cycle time 90 – ns
Tjh TCLK High time 0.4 x Tjc 0.6 x Tjc ns
Tjl TCLK low time 0.4 x Tjc 0.6 x Tjc ns
Tjval TCLK falling edge to TDO valid – 25 ns
Tjsu TMS/TDI setup to TCLK 20 – ns
Tjsh TMS/TDI hold from TCLK 5 – ns
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7.11 System AC Timing Specification
Figure 51 and Table 56 illustrate the system reset AC timing specifications.
Figure 51 System Reset AC Timing
Table 56 System Reset AC Timing Parameters
Symbol Parameter Min Max Units
Trw Reset pulse width 1.0 – µs
Trt Reset recovery time 200 – µs
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7.12 LED AC Timing Specification
Figure 52 and Table 57 provide the LED AC timing specifications.
Figure 52 LED AC Interface Timing
LED_CLK
LED_DATA
LED_LATCH
Tcyc
Tlow
Thi
Tdatd
Thatl
Tlath
Table 57 LED Interface AC Timing Parameters
Symbol Parameter Min Max Units
Tcyc LED_CLK cycle time 1.36 1.40 ms
Thi LED_CLK High time 680 700 µs
Tlow LED_CLK low time 680 700 µs
Tdatd LED_CLK falling edge to LED_DATA valid – 5 ns
Tlath LED_CLK falling edge to LED_LATCH rising edge – 5 ns
Tlatl LED_CLK rising edge to LED_LATCH falling edge – 5 ns
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8.0 Register Set
The registers shown in this section provide access for configuration, alarm monitoring, and
control of the chip. Table 58, MAC Control Registers ($ Port Index + Offset), on page 149
through Table 68, Optical Module Registers ($ 0x799 - 0x79F), on page 155 provide register
map details. The registers are listed by ascending address in the table.
8.1 Document Structure
The following sections are structured to provide a general overview of the register map.
Later sections provide detailed descriptions of each register segment or bit.
All registers are accessed and addressed as 32-bit doublewords. When accessed using 8-
or 16-bit accesses, the CPU interface packs or unpacks the partial accesses into a 32-bit
register value.
8.2 Graphical Representation
Figure 53 represents an overview of the IXF1104 MAC global control status registers that
are used to configure or report on all ports. All register locations shown in Figure 53
represent a 32-bit double word.
8.3 Per Port Registers
Section 8.4 covers all of the registers that are replicated in each port of the IXF1104 MAC.
These registers perform an identical function in each port.
Figure 53 Memory Overview Diagram
B0744-01
Global Configuration
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Port 3 MAC Control & Statistics
Port 2 MAC Control & Statistics
Port 1 MAC Control & Statistics
Port 0 MAC Control & Statistics
- RX Block Configuration
- TX Block Configuration
0x7FF
0x500
0x480
0x400
0x380
0x300
0x280
0x200
0x180
0x100
0x080
0x000
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The address vector for the IXF1104 MAC is 11 bits wide. This allows for 7 bits of port-
specific access and a 4-bit vector to address each port and all global registers. The address
format is shown in Figure 54.
8.4 Register Map
Table 58 through Table 68, Optical Module Registers ($ 0x799 - 0x79F), on page 155
present the IXF1104 MAC memory map details. Global control and status registers are used
to configure or report on all ports, and some registers are replicated on a per-port basis.
Note: All IXF1104 MAC registers are 32 bits.
Figure 54 Register Overview Diagram
Port Select & Global Registers Per-Port Registers
10 0
6
Table 58 MAC Control Registers ($ Port Index + Offset) (Sheet 1 of 2)
Register Bit Size Mode1Ref Page Offset
Station Address ($ Port_Index +0x00 – +0x01) Low 32 R/W page 155 0x00
Station Address ($ Port_Index +0x00 – +0x01) High 32 R/W page 155 0x01
Desired Duplex ($ Port_Index + 0x02) 32 R/W page 156 0x02
FD FC Type ($ Port_Index + 0x03) 32 R/W page 156 0x03
Reserved 32 R – 0x04
Collision Distance ($ Port_Index + 0x05) 32 R/W page 156 0x05
Collision Threshold ($ Port_Index + 0x06) 32 R/W page 156 0x06
FC TX Timer Value ($ Port_Index + 0x07) 32 R/W page 157 0x07
FD FC Address ($ Port_Index + 0x08 – + 0x09)
FDFCAddressLow 32 R/W page 157 0x08
FD FC Address ($ Port_Index + 0x08 – + 0x09)
FDFCAddressHigh 32 R/W page 157 0x09
IPG Receive Time 1 ($ Port_Index + 0x0A) 32 R/W page 158 0x0A
IPG Receive Time 2 ($ Port_Index + 0x0B) 32 R/W page 158 0x0B
IPG Transmit Time ($ Port_Index + 0x0C) 32 R/W page 158 0x0C
Reserved – RO – 0x0D
Pause Threshold ($ Port_Index + 0x0E) 32 R/W page 158 0x0E
Max Frame Size (Addr: Port_Index + 0x0F) 32 R/W page 159 0x0F
MAC IF Mode and RGMII Speed ($ Port_Index + 0x10) 32 R/W page 159 0x10
Flush TX ($ Port_Index + 0x11) 32 R/W page 159 0x11
FC Enable ($ Port_Index + 0x12) 32 R/W page 160 0x12
FC Back Pressure Length ($ Port_Index + 0x13) 32 R/W page 160 0x13
Short Runts Threshold ($ Port_Index + 0x14) 32 R/W page 161 0x14
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Discard Unknown Control Frame ($ Port_Index + 0x15) 32 R/W page 161 0x15
RX Config Word ($ Port_Index + 0x16) 32 RO page 161 0x16
TX Config Word ($ Port_Index + 0x17) 32 R/W page 162 0x17
Diverse Config Write ($ Port_Index + 0x18) 32 R/W page 163 0x18
RX Packet Filter Control ($ Port_Index + 0x19) 32 R/W page 164 0x19
Port Multicast Address ($ Port_Index +0x1A – +0x1B)
PortMulticastAddressLow 32 R/W page 165 0x1A
Port Multicast Address ($ Port_Index +0x1A – +0x1B)
PortMulticastAddressHigh 32 R/W page 165 0x1B
Table 58 MAC Control Registers ($ Port Index + Offset) (Sheet 2 of 2)
Register Bit Size Mode1Ref Page Offset
Table 59 MAC RX Statistics Registers ($ Port Index + Offset)
Register Bit Size Mode1Ref Page Offset
RxOctetsTotalOK 32 R page 166 0x20
RxOctetsBAD 32 R page 166 0x21
RxUCPckts 32 R page 166 0x22
RxMCPkts 32 R page 166 0x23
RxBCPkts 32 R page 166 0x24
RxPkts64Octets 32 R page 166 0x25
RxPkts65to127Octets 32 R page 166 0x26
RxPkts128to255Octets 32 R page 166 0x27
RxPkts256to511Octets 32 R page 166 0x28
RxPkts512to1023Octets 32 R page 166 0x29
RxPkts1024to1518Octets 32 R page 166 0x2A
RxPkts1519toMaxOctets 32 R page 166 0x2B
RxFCSErrors 32 R page 166 0x2C
RxTagged 32 R page 166 0x2D
RxDataError 32 R page 166 0x2E
RxAlign Errors 32 R page 166 0x2F
RxLongErrors 32 R page 166 0x30
RxJabberErrors 32 R page 166 0x31
PauseMacControlReceivedCounter 32 R page 166 0x32
RxUnknownMacControlFrameCounter 32 R page 166 0x33
RxVeryLongErrors 32 R page 166 0x34
RxRuntErrors 32 R page 166 0x35
RxShortErrors 32 R page 166 0x36
RxCarrierExtendError 32 R page 166 0x37
RxSequenceErrors 32 R page 166 0x38
RxSymbolErrors 32 R page 166 0x39
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Table 60 MAC TX Statistics Registers ($ Port Index + Offset)
Register Bit Size Mode1Ref Page Offset
OctetsTransmittedOK 32 R page 170 0x40
OctetsTransmittedBad 32 R page 170 0x41
TxUCPkts 32 R page 170 0x42
TxMCPkts 32 R page 170 0x43
TxBCPkts 32 R page 170 0x44
TxPkts64Octets 32 R page 170 0x45
TxPkts65to127Octets 32 R page 170 0x46
TxPkts128to255Octets 32 R page 170 0x47
TxPkts256to511Octets 32 R page 170 0x48
TxPkts512to1023Octets 32 R page 170 0x49
TxPkts1024to1518Octets 32 R page 170 0x4A
TxPkts1519toMaxOctets 32 R page 170 0x4B
TxDeferred 32 R page 170 0x4C
TxTotalCollisions 32 R page 170 0x4D
TxSingleCollisions 32 R page 170 0x4E
TxMultipleCollisions 32 R page 170 0x4F
TxLateCollisions 32 R page 170 0x50
TxExcessiveCollisionErrors 32 R page 170 0x51
TxExcessiveDeferralErrors 32 R page 170 0x52
TxExcessiveLengthDrop 32 R page 170 0x53
TxUnderrun 32 R page 170 0x54
TxTagged 32 R page 170 0x55
TxCRCError 32 R page 170 0x56
TxPauseFrames 32 R page 170 0x57
TxFlowControlCollisionsSend 32 R page 170 0x58
Table 61 PHY Autoscan Registers ($ Port Index + Offset) (Sheet 1 of 2)
Register Bit Size Mode1Ref Page Offset
PHY Control ($ Port Index + 0x60) 32 RO page 173 0x60
PHY Status ($ Port Index + 0x61) 32 RO page 174 0x61
PHY Identification 1 ($ Port Index + 0x62) 32 RO page 175 0x62
PHY Identification 2 ($ Port Index + 0x63) 32 RO page 175 0x63
Auto-Negotiation Advertisement ($ Port Index + 0x64) 32 RO page 176 0x64
Auto-Negotiation Link Partner Base Page Ability ($ Port
Index + 0x65) 32 RO page 177 0x65
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Auto-Negotiation Expansion ($ Port Index + 0x66) 32 RO page 178 0x66
Auto-Negotiation Next Page Transmit ($ Port Index +
0x67) 32 RO page 179 0x67
Reserved 32 RO – 0x68 - 0x6F
Table 61 PHY Autoscan Registers ($ Port Index + Offset) (Sheet 2 of 2)
Register Bit Size Mode1Ref Page Offset
Table 62 Global Status and Configuration Registers ($ 0x500 - 0X50C)
Register Bit Size Mode1Ref Page Address
Port Enable ($0x500) 32 R/W page 180 0x500
Interface Mode ($0x501) 32 R/W page 180 0x501
Link LED Enable ($0x502) 32 R/W page 181 0x502
Reserved 32 RO – 0x503 - 0x504
MAC Soft Reset ($0x505) 32 R/W page 181 0x505
MDIO Soft Reset ($0x506) 32 R/W page 182 0x506
Reserved 32 RO – 0x507
CPU Interface ($0x508) 32 R/W page 182 0x508
LED Control ($0x509) 32 R/W page 182 0x509
LED Flash Rate ($0x50A) 32 R/W page 183 0x50A
LED Fault Disable ($0x50B) 32 R/W page 183 0x50B
JTAG ID ($0x50C) 32 R page 184 0x50C
Table 63 RX FIFO Registers ($ 0x580 - 0x5BF) (Sheet 1 of 2)
Register Bit Size Mode1Ref Page Address
RX FIFO High Watermark Port 0 ($0x580) 32 R/W page 184 0x580
RX FIFO High Watermark Port 1 ($0x581) 32 R/W page 185 0x581
RX FIFO High Watermark Port 2 ($0x582) 32 R/W page 185 0x582
RX FIFO High Watermark Port 3 ($0x583) 32 R/W page 185 0x583
Reserved 32 RO – 0x584 - 0x589
RX FIFO Low Watermark Port 0 ($0x58A) 32 R/W page 186 0x58A
RX FIFO Low Watermark Port 1 ($0x58B) 32 R/W page 186 0x58B
RX FIFO Low Watermark Port 2 ($0x58C) 32 R/W page 186 0x58C
RX FIFO Low Watermark Port 3 ($0x58D) 32 R/W page 187 0x58D
Reserved 32 RO – 0x58E - 0x593
RX FIFO Overflow Frame Drop Counter Port 0 32 R page 187 0x594
RX FIFO Overflow Frame Drop Counter Port 1 32 R page 187 0x595
RX FIFO Overflow Frame Drop Counter Port 2 32 R page 187 0x596
RX FIFO Overflow Frame Drop Counter Port 3 32 R page 187 0x597
Reserved 32 RO – 0x598 - 0x59D
RX FIFO Port Reset ($0x59E) 32 R/W page 187 0x59E
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RX FIFO Errored Frame Drop Enable ($0x59F) 32 R/W page 188 0x59F
RX FIFO Overflow Event ($0x5A0) 32 R page 189 0x5A0
Reserved 32 R – 0x5A1 - 0x5A5
RX FIFO Errored Frame Drop Counter Port 0 32 R page 189 0x5A2
RX FIFO Errored Frame Drop Counter Port 1 32 R page 189 0x5A3
RX FIFO Errored Frame Drop Counter Port 2 32 R page 189 0x5A4
RX FIFO Errored Frame Drop Counter Port 3 32 R page 189 0x5A5
Reserved 32 RO – 0x5A6 - 0x5B1
RX FIFO SPI3 Loopback Enable for Ports 0 - 3 ($0x5B2) 32 R/W page 190 0x5B2
RX FIFO Padding and CRC Strip Enable ($0x5B3) 32 R/W page 191 0x5B3
Reserved 32 R – 0x5B4 - 0x5B7
RX FIFO Transfer Threshold Port 0 ($0x5B8) 32 R/W page 191 0x5B8
RX FIFO Transfer Threshold Port 1 ($0x5B9) 32 R/W page 191 0x5B9
RX FIFO Transfer Threshold Port 2 ($0x5BA) 32 R/W page 192 0x5BA
RX FIFO Transfer Threshold Port 3 ($0x5BB) 32 R/W page 192 0x5BB
Reserved 32 R – 0x5BC - 0x5BF
Table 63 RX FIFO Registers ($ 0x580 - 0x5BF) (Sheet 2 of 2)
Register Bit Size Mode1Ref Page Address
Table 64 TX FIFO Registers ($ 0x600 - 0x63E) (Sheet 1 of 2)
Register Bit Size Mode1Ref Page Address
TX FIFO High Watermark Port 0 32 R/W page 193 0x600
TX FIFO High Watermark Port 1 32 R/W page 193 0x601
TX FIFO High Watermark Port 2 32 R/W page 193 0x602
TX FIFO High Watermark Port 3 32 R/W page 193 0x603
Reserved 32 RO – 0x604 - 0x609
TX FIFO Low Watermark Port 0 32 R/W page 195 0x60A
TX FIFO Low Watermark Port 1 32 R/W page 195 0x60B
TX FIFO Low Watermark Port 2 32 R/W page 195 0x60C
TX FIFO Low Watermark Port 3 32 R/W page 195 0x60D
Reserved 32 RO – 0x60E - 0x613
TX FIFO MAC Threshold Port 0 32 R/W page 196 0x614
TX FIFO MAC Threshold Port 1 32 R/W page 196 0x615
TX FIFO MAC Threshold Port 2 32 R/W page 196 0x616
TX FIFO MAC Threshold Port 3 32 R/W page 196 0x617
Reserved – RO – 0x618 - 0x61D
TX FIFO Overflow/Underflow Event/Out of Sequence 32 R page 197 0x61E
Loop RX Data to TX FIFO 32 R/W page 198 0x61F
TX FIFO Port Reset 32 R/W page 198 0x620
TX FIFO Overflow Frame Drop Counter Port 0 32 R page 199 0x621
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TX FIFO Overflow Frame Drop Counter Port 1 32 R page 199 0x622
TX FIFO Overflow Frame Drop Counter Port 2 32 R page 199 0x623
TX FIFO Overflow Frame Drop Counter Port 3 32 R page 199 0x624
TX FIFO Errored Frame Drop Counter Port 0 32 R page 200 0x625
TX FIFO Errored Frame Drop Counter Port 1 32 R page 200 0x626
TX FIFO Errored Frame Drop Counter Port 2 32 R page 200 0x627
TX FIFO Errored Frame Drop Counter Port 3 32 R page 200 0x628
Reserved 32 R – 0x629 - 0x62C
TX FIFO Occupancy Counter for Port 0 32 R page 200 0x62D
TX FIFO Occupancy Counter for Port 1 32 R page 200 0x62E
TX FIFO Occupancy Counter for Port 2 32 R page 200 0x62F
TX FIFO Occupancy Counter for Port 3 32 R page 200 0x630
Reserved 32 R – 0x631 - 0x63E
Table 64 TX FIFO Registers ($ 0x600 - 0x63E) (Sheet 2 of 2)
Register Bit Size Mode1Ref Page Address
Table 65 MDIO Registers ($ 0x680 - 0x683)
Register Bit Size Mode1Ref Page Address
MDIO Single Command ($0x680) 32 R/W page 201 0x680
MDIO Single Read and Write Data ($0x681) 32 R/W page 202 0x681
Autoscan PHY Address Enable ($0x682) 32 R/W page 202 0x682
MDIO Control ($0x683) 32 R/W page 202 0x683
Table 66 SPI3 Registers ($ 0x700 - 0x716)
Register Bit Size Mode1Ref Page Address
SPI3 Transmit and Global Configuration ($0x700) 32 R/W page 203 0x700
SPI3 Receive Configuration ($0x701) 32 R/W page 205 0x701
Reserved 32 R – 0x702 - 0x709
Address Parity Error Packet Drop Counter ($0x70A) 32 R page 208 0x70A
Reserved 32 R – 0x70B - 0x716
Table 67 SerDes Registers ($ 0x780 - 0x798) (Sheet 1 of 2)
Register Bit Size Mode1Ref Page Address
Reserved 32 RO – 0x780 - 0x783
TX Driver Power Level Ports 0 - 3 ($0x784) 32 R/W page 208 0x784
Reserved 32 RO – 0x785 - 0x786
TX and RX Power-Down ($0x787) 32 R/W page 209 0x787
Reserved 32 RO – 0x788 - 0x792
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8.4.1 MAC Control Registers
Table 69 through Table 91, Port Multicast Address ($ Port_Index +0x1A – +0x1B), on
page 165 provide details on the control and status registers associated with each MAC port.
The register address is ‘Port_index + 0x**’, where the port index is set at any value from 0x0
through 0x5. All registers are 32-bit. The unused bits of the registers are read-only and are
set permanently to zero.
RX Signal Detect Level Ports 0 - 3 ($0x793) 32 R/W page 209 0x793
Clock and Interface Mode Change Enable Ports 0 - 3
($0x794) 32 R/W page 210 0x794
Reserved 32 RO – 0x795 - 0x798
Table 67 SerDes Registers ($ 0x780 - 0x798) (Sheet 2 of 2)
Register Bit Size Mode1Ref Page Address
Table 68 Optical Module Registers ($ 0x799 - 0x79F)
Register Bit Size Mode1Ref Page Address
Optical Module Status Ports 0-3 ($0x799) 32 R page 211 0x799
Optical Module Control Ports 0 - 3 ($0x79A) 32 R/W page 211 0x79A
I2C Control Ports 0 - 3 ($0x79B) 32 R/W page 212 0x79B
Reserved 32 RO – 0x79C - 0x79E
I2C Data Ports 0 - 3 ($0x79F) 32 R/W page 212 0x79F
Table 69 Station Address ($ Port_Index +0x00 – +0x01)
Name Description Address Type1Default
Station Address
Low
Source MAC address bit 31-0.
This address is inserted in the source address
field when transmitting pause frames, and is also
used to compare against unicast pause frames
at the receiving side.
Port_Index
+ 0x00 R/W 0x0000000
Station Address
High
Source MAC address bit 47-32.
This address is inserted in the source address
field when transmitting pause frames, and is also
used to compare against unicast pause frames
at the receiving side. Bits 15:0 of this register are
assigned to bits 47:32 of the station address.
Port_Index
+ 0x01 R/W 0x00000000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 70 Desired Duplex ($ Port_Index + 0x02)
Bit Name Description Type1Default
Register Description: Chooses between half-duplex and full-duplex operation in RGMII
100 Mbps or 10 Mbps mode only.
This register must be set to the default value of 1 and must not be changed when operating in
RGMII 1000 Mbps, GMII, or fiber mode.
0x00000001
31:1 Reserved Reserved R 0x00000000
0 Duplex Select
0 = Half-duplex
1 = Full-duplex
NOTE: Half-duplex operation applies only to
10/100 Mbps speed on copper media in RGMII
mode only. Gigabit speed on either media requires
full-duplex.
R/W 1
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 71 FD FC Type ($ Port_Index + 0x03)
Name Description Address Type1Default
FD FC Type
This value fills the Type field of the Transmitted
Pause frames. Only bits 15:0 of this register are
used.
Port_Index
+ 0x03 R/W 0x00008808
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 72 Collision Distance ($ Port_Index + 0x05)
Name Description Address Type1Default
Collision
Distance
This is a 10-bit value that sets the limit for late
collision. Collisions happening at byte times
beyond the configured value are considered to be
late collisions. (Only valid in half-duplex).
Port_Index
+ 0x05 R/W 0x00000043
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 73 Collision Threshold ($ Port_Index + 0x06)
Name Description Address Type1Default
Collision
Threshold
This is a 4-bit value that sets the limit for
excessive collisions. When the number of
transmission attempts performed for a packet
exceeds this value, it is considered to be an
excessive collision and the frame is dropped.
(Only valid in half-duplex).
Port_Index
+ 0x06 R/W 0x0000000F
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 74 FC TX Timer Value ($ Port_Index + 0x07)
Name Description Address Type1Default
FC TX Timer
Value
The 16-bit pause length inserted in the flow
control pause frame sent to the receiving
station. The value is in 512-bit times.
Port_Index
+ 0x07 R/W 0x0000005E
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 75 FD FC Address ($ Port_Index + 0x08 – + 0x09)
Name Description Address Type1Default
FD FC Address Low
The lowest 32 bits of the 48-bit globally
assigned multicast pause frame destination
address.
Port_Index
+ 0x08 R/W 0xC2000001
FD FC Address High
The highest 16 bits (47:32) of the globally
assigned multicast pause frame destination
address. The higher 16-bit address is
derived from bits 15:0 of this register.
Port_Index
+ 0x09 R/W 0x00000180
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 76 IPG Receive Time 1 ($ Port_Index + 0x0A)
Name Description Address Type1Default
IPG Receive Time 1
This timer is used during half-duplex operation
when there is a packet waiting for
transmission from the MAC. This timer starts
after CRS is de-asserted. If CRS is asserted
during this time, no transmission is initiated
and the counter restarts once CRS is de-
asserted again.
The value specified in this register is
calculated as follows: (register_value * 8) =
RXIPG1 in terms of bit times. Therefore, a
default value of 8 gives the following: (8 * 8 =
64 bit times for the default).
Port_Index
+ 0x0A R/W 0x00000008
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 77 IPG Receive Time 2 ($ Port_Index + 0x0B)
Name Description Address Type1Default
IPG Receive Time 2
This is only used in half-duplex operation. It
starts counting at the same time as RXIPG1.
Once RXIPG1 expires, a frame is transmitted
when RXIPG2 expires regardless of the CRS
value. If CRS is asserted before RXIPG1
expires, no transmission occurs and both
RXIPG1 an RXIPG2 are reset once CRS is
de-asserted again.
The value specified in this register is
calculated as follows: (register_value +5) * 8 =
RXIPG2 in terms of bit times. Therefore, a
default of 7 gives the following:
(7+5) * 8 = 96 bit times for default.
Port_Index
+ 0x0B R/W 0x00000007
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 78 IPG Transmit Time ($ Port_Index + 0x0C)
Name Description Address Type1Default
IPG Transmit Time
This is a 10-bit value configuring IPG time for
back-to-back transmissions.
The value specified in this register is
calculated as follows: (register_value +4) * 8 =
TXIPG in terms of bit times. Therefore, a
default value of 8 gives the following:
(8+4) * 8 = 96 bit times for the default.
Port_Index
+ 0x0C R/W 0x00000008
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 79 Pause Threshold ($ Port_Index + 0x0E)
Name Description Address Type1Default
Pause
Threshold
When a pause frame has been sent, an internal
timer checks when the next pause frame must
be scheduled for transmission to keep the link
partner in pause mode (this is required only if
the flow control has to be extended for one more
session). The pause threshold value is a 16-bit
value that sets the time in terms of 512-bit
quantum after the previous pause frame when
the next pause frame has to be sent. This
ensures that the link partner is kept in pause
mode continuously.
Port_Index
+ 0x0E R/W 0x0000002F
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 80 Max Frame Size (Addr: Port_Index + 0x0F)
Name Description Address Type1Default
Max Frame Size
This is a 14-bit value configuring the maximum
frame size the MAC can receive or transmit
without activating any error counters, and
without truncation.
This value is excluding the 4-byte CRC in the
transmit direction when CRC append is
enabled in the MAC. Hence, this value has to
be set four bytes less when CRC append is
enabled in the MAC.
The maximum frame size is internally adjusted
by +4 if the frame is VLAN tagged.
Port_Inde
x + 0x0F R/W 0x000005EE
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 81 MAC IF Mode and RGMII Speed ($ Port_Index + 0x10)
Bit Name Description Type1Default
Register Description – MAC IF Mode: Determines the MAC operation frequency and mode
per port.
Changes to the data setting of this register must be made in conjunction with the Clock and
Interface Mode Change Enable Ports 0 - 3 ($0x794) to ensure a safe transition to a new
operational mode. Changes to this register must follow a proper sequence. Refer to Section
6.1, Change Port Mode Initialization Sequence, on page 124 for the proper sequence for
changing the port mode and speed.
0x00000003
31:3 Reserved Reserved R 0x00000000
2:0 Port Mode
These bits are used to define the clock mode and
the RGMII/GMII mode of operation.
000 =Reserved
001 =Reserved
010 =GMII 1000 Mbps operation
011 = Reserved
100 =RGMII 10 Mbps operation
101 =RGMII 100 Mbps operation
11x = RGMII 1000 Mbps operation
R/W 011
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 82 Flush TX ($ Port_Index + 0x11)
Bit Name Description Type1Default
Register Description: Used to flush all TX data. It is used if all traffic sent to a port should be
stopped. 0x00000000
31:1 Reserved Reserved R 0x00000000
0Flush TX This bit flushes all TX data and is used if all the
traffic sent to a port should be stopped. R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 83 FC Enable ($ Port_Index + 0x12)
Bit Name Description Type1Default
Register Description: Indicates which flow control mode is used for the RX and TX MAC. 0x00000007
31:3 Reserved Reserved R 0x00000000
2TX HDFC
When TX HDFC is enabled (half-duplex mode
only), the MAC generates deliberate collisions on
incoming packets when the RX FIFO occupancy
crosses the High Watermark (flow control).
0 = Disable TX half-duplex flow control
1 = Enable TX half-duplex flow control
R/W 1
1TX FDFC
0 = Disable TX full-duplex flow control [the MAC
will not generate internally any flow control
frames based on the RX FIFO watermarks or
the Transmit Pause Control interface
1 = Enable TX full-duplex flow control [enables the
MAC to send flow control frames to the link
partner based on the RX FIFO programmable
watermarks or the Transmit Pause Control
interface]
R/W 1
0 RX FDFC
0 = Disable RX full-duplex flow control [the MAC
will not respond to flow control frames sent to it
by the link partner]
1 = Enable RX full-duplex flow control [MAC will
respond to flow control frames sent by the link
partner and will stop packet transmission for
the time specified in the flow control frame]
R/W 1
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 84 FC Back Pressure Length ($ Port_Index + 0x13)
Name Description Address Type1Default
FC Back Pressure
Length
This register sets number the byte cycles
for which the collision has to be applied.
The 6-bit configuration holds the value in
bytes, which applies to the minimum
length/duration of back pressure in half-
duplex mode. Flow control in the receive
path is executed by deliberately colliding
the incoming packets in half-duplex mode.
Register bits 5:0 are used alone.
Port Add +
0x13 R/W 0x0000000C
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 85 Short Runts Threshold ($ Port_Index + 0x14)
Name Description Address Type1Default
Short Runts
Threshold
The 5-bit configuration holds the value in bytes,
which applies to the threshold in determining
between runts and short. The bits 4:0 of this
register are alone used.
A received packet is reported as a short packet
when the length (excluding Preamble and
SFD) is less than this value.
A received packet is reported as a runt packet
when the length (excluding Preamble and
SFD) is equal to or greater than this value and
less than 64-bytes.
Note: This register is only relevant when the
IXF1104 MAC port is configured for
copper operation (the line side
interface is configured for either RGMII
or GMII).
Port_Index +
0x14 R/W 0x00000008
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 86 Discard Unknown Control Frame ($ Port_Index + 0x15)
Bit Name Description Type1Default
Register Description: Discards or forwards unknown control frames. Known control frames
are pause frames. 0x00000000
31:1 Reserved Reserved R 0x00000000
0Discard Unknown
Control Frame
0 = Forward unknown control frames
1 = Discard unknown control frames R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 87 RX Config Word ($ Port_Index + 0x16) (Sheet 1 of 2)
Bit Name Description Type1Default
Register Description: This register is used in fiber MAC only for auto-negotiation and to report
the receive status. The lower 16 bits of this register are the “config_reg” received from the link
partner, as described in IEEE 802.3 2000 Edition, Section 37.2.1.
0x00000000
31:22 Reserved Reserved RO 0x000
21 An_complete
Auto-negotiation complete. This bit remains
cleared from the time auto-negotiation is reset until
auto-negotiation reaches the “LINK_OK” state. It
remains set until auto-negotiation is disabled or
restarted.
This bit is only valid if auto-negotiation is enabled.
RO 0
20 Rx Sync
0 = Loss of synchronization
1 = Bit synchronization. The bit remains Low until
the register is read.
RO 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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19 RX Config 0 = Receiving idle/data stream
1 = Receiving /C/ ordered sets RO 0
18 Config Changed
0 = RxConfigWord has changed since last read
1 = RxConfigWord has not changed since last
read.
This bit remains High until the register is read.
R0
17 Invalid Word
0 = Have not received an invalid symbol
1 = Have received an invalid symbol
This bit remains High until the register is read.
RO 0
16 Carrier Sense
0 = Device is not receiving idle characters; carrier
sense is true.
1 = Device is receiving idle characters; carrier
sense is false.
RO 0
15 Next Page Next Page request RO 0
14 Reserved Reserved RO 0
13:122Remote Fault [1:0]
Remote fault definitions:
00 = No error, link okay
01 = Offline
10 = Link failure
11 = Auto-negotiation_Error
R/W 00
11:9 Reserved Reserved RO 000
8 Asym Pause Asym Pause. The ability to send pause frames. RO 0
7 Sym Pause Sym Pause. The ability to send and receive pause
frames. RO 0
6 Half Duplex Half-duplex RO 0
5 Full Duplex Full-duplex RO 0
4:0 Reserved Reserved RO 0x0
Table 87 RX Config Word ($ Port_Index + 0x16) (Sheet 2 of 2)
Bit Name Description Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 88 TX Config Word ($ Port_Index + 0x17) (Sheet 1 of 2)
Bit Name Description Type1Default
Register Description: This register is used in fiber MAC for auto-negotiation only. The
contents of this register are sent as the config_word. The contents of this register are the
“config_reg” sent to the link partner, as described in IEEE 802.3 2000 Edition, subclause 37.2.1.
0x000001A0
31:16 Reserved Reserved RO 0x0000
15 Next Page Next Page request R/W 0
14 Reserved Write as 0, ignore on read R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear;
R/W/C = Read/Write, Clear on Write
Note: A value of 0x0 must be written to all reserved bits of the TX Config Word ($ Port_Index + 0x17)
Register.
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13:122Remote Fault [1:0]
Remote fault definitions:
00 = No error, link okay
01 = Offline
10 = Link failure
11 = Auto-negotiation_Error
R/W 00
11:9 Reserved Write as 0, ignore on Read R/W 000
8 Asym Pause Asym Pause. The ability to send pause frames. R/W 1
7 Sym Pause Sym Pause. The ability to send and receive pause
frames. R/W 1
6 Half Duplex Half-duplex R/W 0
5 Full Duplex Full-duplex R/W 1
4:0 Reserved Write as 0, ignore on read R/W 0x00
Table 88 TX Config Word ($ Port_Index + 0x17) (Sheet 2 of 2)
Bit Name Description Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear;
R/W/C = Read/Write, Clear on Write
Note: A value of 0x0 must be written to all reserved bits of the TX Config Word ($ Port_Index + 0x17)
Register.
Table 89 Diverse Config Write ($ Port_Index + 0x18)
Bit Name Description Type1Default
Register Description: This register contains various configuration bits for general use. 0x00110D
18:13 Reserved Write as 0, ignore on Read. R/W 0x0000
12 Reserved2Write as 1, ignore on Read. R/W 1
11-9 Reserved2Write as 0, ignore on Read. R/W 0x0
8 Reserved2Write as 1, ignore on Read. R/W 1
7 pad_enable
0 = Normal operation
1 = Enable padding of undersized packets
Note: Assertion of this bit results in the
automatic addition of a CRC to the
padded packet.
R/W 0
6 crc_add 0 = Normal operation
1 = Enable automatic CRC appending R/W 0
5 AN_enable
Enable auto-negotiation (used for fiber mode only)
to be performed by the hardware state machines
in the MAC.
The hardware auto-negotiation (AN) state
machine controls the config words transmitted
when this bit is set.
Note: In copper mode, this bit must be set to 0
(reserved).
R/W 0
42Reserved Write as 0, ignore on Read. R/W 0
3:22Reserved Write as 1, ignore on Read. R/W 11
12Reserved Write as 0, ignore on Read. R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
2. Reserved bits must be written to the default value for proper operation.
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Table 90 RX Packet Filter Control ($ Port_Index + 0x19) (Sheet 1 of 2)
Bit Name Description Type1Default
Register Description: This register allows for specific packet types to be marked for filtering
and is used in conjunction with the RX FIFO Errored Frame Drop Counter Ports 0 - 3 ($0x5A2
- 0x5A5).
0x00000000
31:6 Reserved Reserved 0
5 CRC Error Pass
This bit enables a Global filter on frames with a
CRC Error.
0 = When CRC Error Pass = 0, all frames with a
CRC Error are marked as bad.2
1 = Frames with a CRC Error are not marked as
bad and are passed to the SPI3 interface for
transfer as good frames, regardless of the
state of the bits in the RX FIFO Errored Frame
Drop Enable ($0x59F).
Note: When the CRC Error Pass Filter bit = 0, it
takes precedence over the other filter bits.
Any packet, whether is a Pause, Unicast,
Multicast or Broadcast packet with a CRC
error, is marked as a bad frame when
CRC Error Pass = 0
R/W 0
4 Pause Frame Pass
This bit enables a Global filter on Pause frames.
0 = All pause frames are dropped.2
1 = All pause frames are passed to the SPI3
Interface.
Note: Pause Frames can only be filtered if
RXFD flow control is enabled in the FC
Enable ($ Port_Index + 0x12).
R/W 0
3 VLAN Drop En
This bit enables a global filter on VLAN frames.
0 = All VLAN frames are passed to the SPI3
Interface.
1 = All VLAN frames are dropped.2
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
2. Used in conjunction with the Table 122, RX FIFO Errored Frame Drop Enable ($0x59F), on page 188. This
allows the frame to be dropped in the RX FIFO. Otherwise, the frame is sent out the SP3 interface and
may be optionally signaled with an RERR (see bit 0 of RX FIFO Errored Frame Drop Enable ($0x59F)RX
FIFO Errored Frame Drop Enable ($0x59F).
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8.4.2 MAC RX Statistics Register Overview
The MAC RX Statistics registers contain the MAC receiver statistic counters and are cleared
when read. The software polls these registers and accumulates values to ensure that the
counters do not wrap. The 32-bit counters wrap after approximately 30 seconds.
Table 92 covers the RX statistics for the four MAC ports. Port_Index is the port number (0,
1, 2, or 3).
2 B/Cast Drop En
This bit enables a Global filter on broadcast
frames.
0 = All broadcast frames are passed to the SPI3
Interface.
1 = All broadcast frames are dropped.2
R/W 0
1 M/Cast Match En
This bit enables a filter on multicast frames.
0 = All muticast frames are good and passed to
the SPI3 Interface.
1 = Only multicast frames with a destination
address that matches the
PortMulticastAddress are forwarded. All other
muticast frames are dropped.2
R/W 0
0 U/Cast Match En2
This bit enables a filter on unicast frames.
0 = All unicast frames are good and are passed to
the SPI3 Interface.
1 = Only unicast frames with a Destination
Address that matches the Station Address are
forwarded. All other unicast frames are
dropped.2
Note: The VLAN filter overrides the unicast filter.
Therefore, a VLAN frame cannot be
filtered based on the unicast address.
R/W 0
Table 90 RX Packet Filter Control ($ Port_Index + 0x19) (Sheet 2 of 2)
Bit Name Description Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
2. Used in conjunction with the Table 122, RX FIFO Errored Frame Drop Enable ($0x59F), on page 188. This
allows the frame to be dropped in the RX FIFO. Otherwise, the frame is sent out the SP3 interface and
may be optionally signaled with an RERR (see bit 0 of RX FIFO Errored Frame Drop Enable ($0x59F)RX
FIFO Errored Frame Drop Enable ($0x59F).
Table 91 Port Multicast Address ($ Port_Index +0x1A – +0x1B)
Name Description Address Type*Default
Port Multicast
Address Low
This address compares against multicast frames
at the receiving side if multicast filtering is
enabled.
This register contains bits 31:0 of the address.
Port_Index
+ 0x1A R/W 0x0000000
Port Multicast
Address High
This address compares against multicast frames
at the receiving side if Multicast filtering is
enabled.
This register contains bits 47:32 of the address.
Port_Index
+ 0x1B R/W 0x00000000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 92 MAC RX Statistics ($ Port_Index + 0x20 – + 0x39) (Sheet 1 of 4)
Name Description Address Type1Default
RxOctetsTotalOK
Counts the bytes received in all legal frames,
including all bytes from the destination MAC
address to and including the cyclic redundancy
check (CRC). The initial preamble and Start of
Frame Delimiter (SFD) bytes are not counted.
Port_Index
+ 0x20 R 0x00000000
RxOctetsBAD2
Counts the bytes received in all bad frames with
legal size (frames with CRC error, alignment
errors, or code violations), including all bytes
from the destination MAC address to (and
including) the CRC. The initial preamble and
SFD bytes are not counted. Frames with illegal
size do not add to this counter (shorts, runts,
longs, jabbers, and very longs).
Note: This register does not count octets on
undersized received packets.
Port_Index
+ 0x21 R 0x00000000
RxUCPkts
The total number of unicast packets received
(excluding bad packets).
Note: This count includes non-pause control
and VLAN packets, which are also
counted in other counters. These packet
types are counted twice. Take care
when summing register counts for
reporting Management Information
Base (MIB) information.
Port_Index
+ 0x22 R 0x00000000
RxMCPkts
The total number of multicast packets received
(excluding bad packets)
Note: This count includes pause control
packets, which are also counted in the
PauseMacControl-ReceivedCounter.
These packet types are counted twice.
Take care when summing register
counts for reporting MIB information.
Port_Index
+ 0x23 R 0x00000000
RxBCPkts The total number of Broadcast packets received
(excluding bad packets).
Port_Index
+ 0x24 R 0x00000000
RxPkts64Octets
The total number of packets received (including
bad packets) that were 64 octets in length.
Incremented for tagged packets with a length of
64 bytes, including tag field.
Port_Index
+ 0x25 R 0x00000000
RxPkts65to127
Octets
The total number of packets received (including
bad packets) that were 65-127 octets in length.
Incremented for tagged packets with a length of
65-127 bytes, including tag field.
Port_Index
+ 0x26 R 0x00000000
RxPkts128t0255
Octets
The total number of packets received (including
bad packets) that were 128-255 octets in length.
Incremented for tagged packets with a length of
128-255 bytes, including tag field.
Port_Index
+ 0x27 R 0x00000000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear;
R/W/C = Read/Write, Clear on Write
2. When sending in large frames, the counters can only handle certain limits. The behavior of the LongErrors
and VeryLongErrors counters is as follows: VeryLongErrors counts frames that are 2*maxframesize,
dependent upon where maxframesize is set. If maxframesize sets greater than half of the available count in
RxOctetsBad (2^14-1), VeryLongErrors is never incremented, but LongErrors is incremented. This is due to
a limitation in the counter size, which means that an accurate count will not occur in the RxOctetsBAD
counter if the frame is larger than 2^14-1.
3. This register is relevant only when configured for copper operation.
4. This register is relevant only when configured for fiber operation (line side interface is SerDes).
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RxPkts256to511
Octets
The total number of packets received (including
bad packets) that were 256-511 octets in length.
Incremented for tagged packets with a length of
256-511 bytes, including tag field.
Port_Index
+ 0x28 R 0x00000000
RxPkts512to1023O
ctets
The total number of packets received (including
bad packets) that were 512-1023 octets in
length. Incremented for tagged packets with a
length of 512-1023 bytes, including tag field.
Port_Index
+ 0x29 R 0x00000000
RxPkts1024to1518
Octets
The total number of packets received (including
bad packets) that were 1024-1518 octets in
length. Incremented for tagged packet with a
length between 1024-1522, including the tag.
Port_Index
+ 0x2A R 0x00000000
RxPkts1519toMaxO
ctets
The total number of packets received (including
bad packets) that were greater than 1518 octets
in length. Incremented for tagged packet with a
length between 1523-max frame size, including
the tag.
Port_Index
+ 0x2B R 0x00000000
RxFCSErrors
Number of frames received with legal size, but
with wrong CRC field (also called Frame Check
Sequence (FCS) field).
Note: Legal size is 64 bytes through the value
programmed in the Table 80, Max
Frame Size (Addr: Port_Index + 0x0F),
on page 159.
Port_Index
+ 0x2C R 0x00000000
RxTagged Number of OK frames with VLAN tag.
(Type field = 0x8100)
Port_Index
+ 0x2D R 0x00000000
RxDataError3Number of frames received with legal length,
containing a code violation (signaled with
RX_ERR on RGMII).
Port_Index
+ 0x2E R 0x00000000
RxAlignErrors3
Frames with a legal frame size, but containing
less than eight additional bits. This occurs when
the frame is not byte aligned. The CRC of the
frame is wrong when the additional bits are
stripped. If the CRC is OK, then the frame is not
counted but treated as an OK frame. This
counter increments in 10 Mbps or 100 Mbps
RGMII mode only.
Note: This counter increments in 10 or 100
Mbps RGMII mode only.
Port_Index
+ 0x2F R 0x00000000
Table 92 MAC RX Statistics ($ Port_Index + 0x20 – + 0x39) (Sheet 2 of 4)
Name Description Address Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear;
R/W/C = Read/Write, Clear on Write
2. When sending in large frames, the counters can only handle certain limits. The behavior of the LongErrors
and VeryLongErrors counters is as follows: VeryLongErrors counts frames that are 2*maxframesize,
dependent upon where maxframesize is set. If maxframesize sets greater than half of the available count in
RxOctetsBad (2^14-1), VeryLongErrors is never incremented, but LongErrors is incremented. This is due to
a limitation in the counter size, which means that an accurate count will not occur in the RxOctetsBAD
counter if the frame is larger than 2^14-1.
3. This register is relevant only when configured for copper operation.
4. This register is relevant only when configured for fiber operation (line side interface is SerDes).
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RxLongErrors2
Frames bigger than the maximum allowed, with
both OK CRC and the integral number of octets.
Default maximum allowed is 1518 bytes
untagged and 1522 bytes tagged, but the value
can be changed by a register.
Frames bigger than the larger of
2*maxframesize and 50,000 bits are not counted
here, but they are counted in the VeryLongError
counter.
Port_Index
+ 0x30 R 0x00000000
RxJabberErrors
Frames bigger than the maximum allowed, with
either a bad CRC or a non-integral number of
octets. The default maximum allowed is 1518
bytes untagged and 1522 bytes tagged, but the
value can be changed by a register.
Frames bigger than the larger of
2*maxframesize and 50,000 bits are not counted
here, but they are counted in the VeryLongError
counter.
Port_Index
+ 0x31 R 0x00000000
RxPauseMacContr
olReceivedCounter
Number of Pause MAC control frames received.
This statistic register increments on any valid 64-
byte pause frame with a valid CRC and also
increments on a 64-byte pause frame with an
invalid CRC if bit 5 of the RX Packet Filter
Control ($ Port_Index + 0x19) is set to 1.
Port_Index
+ 0x32 R 0x00000000
RxUnknownMac
ControlFrame
Counter
Number of MAC control frames received with an
op code different from 0001 (Pause).
Port_Index
+ 0x33 R 0x00000000
RxVeryLongErrors2Frames bigger than the larger of
2*maxframesize and 50,000 bits
Port_Index
+ 0x34 R 0x00000000
Table 92 MAC RX Statistics ($ Port_Index + 0x20 – + 0x39) (Sheet 3 of 4)
Name Description Address Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear;
R/W/C = Read/Write, Clear on Write
2. When sending in large frames, the counters can only handle certain limits. The behavior of the LongErrors
and VeryLongErrors counters is as follows: VeryLongErrors counts frames that are 2*maxframesize,
dependent upon where maxframesize is set. If maxframesize sets greater than half of the available count in
RxOctetsBad (2^14-1), VeryLongErrors is never incremented, but LongErrors is incremented. This is due to
a limitation in the counter size, which means that an accurate count will not occur in the RxOctetsBAD
counter if the frame is larger than 2^14-1.
3. This register is relevant only when configured for copper operation.
4. This register is relevant only when configured for fiber operation (line side interface is SerDes).
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RxRuntErrors3
The total number of packets received that are
less than 64 octets in length, but longer than or
equal to 96 bit times, which corresponds to a 4-
byte frame with a well-formed preamble and
SFD. This is the shortest fragment and can be
transmitted in case of a collision event on a half-
duplex segment. This counter indicates fragment
sizes, which is expected on half-duplex
segments but not on full-duplex links.
Note: The ShortRuntsThreshold register
controls the byte count used to
determine the difference between Runts
and Shorts and therefore controls which
counter is incremented for a given frame
size. This counter is only updated after
receipt of two good frames.
Note: This counter is only valid when the
selected port within the IXF1104 MAC is
operating in copper (RGMII or GMII)
mode. The RuntError counter is not
updated when the selected port within
the IXF1104 MAC is configured to
operated in fiber (SerDes) mode.
Port_Index
+ 0x35 R 0x00000000
RxShort Errors3
The total number of packets received that are
less than 96 bit times, which corresponds to a 4-
byte frame with a well-formed preamble and
SFD. This counter indicates fragment sizes
illegal in all modes and is only fully updated after
reception of a good frame following a fragment.
Note: This register is only relevant when the
IXF1104 MAC port is configured for
copper operation (the line side interface
is configured for either RGMII or GMII
operation). This register will not
increment when the IXF1104 MAC port
is configured for fiber operation using
the SerDes interface.
Port_Index
+ 0x36 R 0x00000000
RxCarrier Extend
Error Not applicable. Port_Index
+ 0x37 R 0x00000000
RxSequenceErrors4Records the number of sequencing errors that
occur in fiber mode.
Port_Index
+ 0x38 R 0x00000000
RxSymbolErrors4Records the number of symbol errors
encountered by the PHY.
Port_Index
+ 0x39 R 0x00000000
Table 92 MAC RX Statistics ($ Port_Index + 0x20 – + 0x39) (Sheet 4 of 4)
Name Description Address Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear;
R/W/C = Read/Write, Clear on Write
2. When sending in large frames, the counters can only handle certain limits. The behavior of the LongErrors
and VeryLongErrors counters is as follows: VeryLongErrors counts frames that are 2*maxframesize,
dependent upon where maxframesize is set. If maxframesize sets greater than half of the available count in
RxOctetsBad (2^14-1), VeryLongErrors is never incremented, but LongErrors is incremented. This is due to
a limitation in the counter size, which means that an accurate count will not occur in the RxOctetsBAD
counter if the frame is larger than 2^14-1.
3. This register is relevant only when configured for copper operation.
4. This register is relevant only when configured for fiber operation (line side interface is SerDes).
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8.4.3 MAC TX Statistics Register Overview
The MAC TX Statistics registers contain all the MAC transmit statistic counters and are
cleared when read. The software must poll these registers to accumulate values and to
ensure that the counters do not wrap. The 32-bit counters wrap after approximately 30
seconds.
Table 93 covers all four MAC ports TX statistics. Port_Index is the port number (0, 1, 2, or
3).
Table 93 MAC TX Statistics ($ Port_Index +0x40 – +0x58) (Sheet 1 of 4)
Name Description Address Type1Default
OctetsTransmittedOK
Counts the bytes transmitted in all legal
frames. The count includes all bytes
from the destination MAC address to
and including the CRC. The initial
preamble and SFD bytes are not
counted. Any initial collided
transmission attempts before a
successful frame transmission do not
add to this counter.
Port_Index +
0x40 R 0x00000000
OctetsTransmittedBad
Counts the bytes transmitted in all bad
frames. The count includes all bytes
from the destination MAC address to
and including the CRC. The initial
preamble and SFD bytes are not
counted.
Late collision counted: The count is
close to the actual number of bytes
transmitted before the frame is
discarded.
Excessive collision counted: The count
is close to the actual number of bytes
transmitted before the frame is
discarded.
TX under-run counted: The count is
expected to match the number of bytes
actually transmitted before the frame is
discarded.
TX CRC error counted: All bytes not
sent with success are counted by this
counter.
Any initial collided transmission
attempts before a successful frame
transmission do not add to this counter.
Port_Index +
0x41 R 0x00000000
TxUCPkts The total number of unicast packets
transmitted (excluding bad packets).
Port_Index +
0x42 R 0x00000000
TxMCPkts
The total number of multicast packets
transmitted (excluding bad packets).
Note: This count includes pause
control packets, which are also
counted in the
TxPauseFrames Counter.
Thus, these types of packets
are counted twice. Take care
when summing register counts
for reporting MIB information.
Port_Index +
0x43 R 0x00000000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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TxBCPkts The total number of broadcast packets
transmitted (excluding bad packets).
Port_Index +
0x44 R 0x00000000
TxPkts64Octets
The total number of packets
transmitted (including bad packets) that
were 64 octets in length. Incremented
for tagged packets with a length of 64
bytes, including tag field.
Port_Index +
0x45 R 0x00000000
Txpkts65to127Octets
The total number of packets
transmitted (including bad packets) that
were 65-127 octets in length.
Incremented for tagged packets with a
length of 65-127 bytes, including tag
field.
Port_Index +
0x46 R 0x00000000
Txpkts128to255Octets
The total number of packets
transmitted (including bad packets) that
were 128-255 octets in length.
Incremented for tagged packets with a
length of 128-255 bytes, including tag
field.
Port_Index +
0x47 R 0x00000000
Txpkts256to511Octets
The total number of packets
transmitted (including bad packets) that
were 256-511 octets in length.
Incremented for tagged packets with a
length of 256-511 bytes, including tag
field.
Port_Index +
0x48 R 0x00000000
Txpkts512to1023Octets
The total number of packets
transmitted (including bad packets) that
were 512-1023 octets in length.
Incremented for tagged packets with a
length of 512-1023 bytes, including tag
field.
Port_Index +
0x49 R 0x00000000
Txpkts1024to1518Octets
The total number of packets
transmitted (including bad packets) that
were 1024-1518 octets in length.
Incremented for tagged packet with a
length between 1024-1522, including
the tag.
Port_Index +
0x4A R 0x00000000
Txpkts1519toMaxOctets
The total number of packets
transmitted (including bad packets) that
were greater than 1518 octets in
length. Incremented for tagged packet
with a length between 1523 - max fame
size, including the tag.
Port_Index +
0x4B R 0x00000000
TxDeferred
Number of times the initial transmission
attempt of a frame is postponed due to
another frame already being
transmitted on the Ethernet network.
TxTotalCollisions.
Note: NA - half-duplex only
Port_Index +
0x4C R 0x00000000
TxTotalCollisions Sum of all collision events.
Note: NA - half-duplex only
Port_Index +
0x4D R 0x00000000
Table 93 MAC TX Statistics ($ Port_Index +0x40 – +0x58) (Sheet 2 of 4)
Name Description Address Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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TxSingleCollisions
A count of successfully transmitted
frames on a particular interface where
the transmission is inhibited by exactly
one collision. A frame that is counted
by an instance of this object is also
counted by the corresponding instance
of either the UnicastPkts,
MulticastPkts, or BroadcastPkts, and is
not counted by the corresponding
instance of the MultipleCollisionFrames
object.
Note: NA - half-duplex only
Port_Index +
0x4E R 0x00000000
TxMultipleCollisions
A count of successfully transmitted
frames on a particular interface for
which transmission is inhibited by more
than one collision. A frame that is
counted by an instance of this object is
also counted by the corresponding
instance of either the UnicastPkts,
MulticastPkts, or BroadcastPkts, and is
not counted by the corresponding
instance of the SingleCollisionFrames
object.
Note: NA - half-duplex only
Port_Index +
0x4F R 0x00000000
TxLateCollisions
The number of times a collision is
detected on a particular interface later
than 512 bit-times into the transmission
of a packet. Such frame are terminated
and discarded.
Note: NA - half-duplex only
Port_Index +
0x50 R 0x00000000
TxExcessiveCollisionErrors
A count of frames, which collides 16
times and is then discarded by the
MAC. Not effecting xMultipleCollisions
Note: NA - half-duplex only
Port_Index +
0x51 R 0x00000000
TxExcessiveDeferralErrors
Number of times frame transmission is
postponed more than 2*MaxFrameSize
because of another frame already
being transmitted on the Ethernet
network. This causes the MAC to
discard the frame.
Note: NA - half-duplex only
Port_Index +
0x52 R 0x00000000
TxExcessiveLengthDrop
Frame transmissions aborted by the
MAC because the frame is longer than
maximum frame size. These frames
are truncated by the MAC when the
maximum frame size violation is
detected by the MAC.
Port_Index +
0x53 R 0x00000000
TxUnderrun
Internal TX error that causes the MAC
to end the transmission before the end
of the frame because the MAC did not
get the needed data in time for
transmission. The frames are lost and
a fragment or a CRC error is
transmitted.
Port_Index +
0x54 R 0x00000000
TxTagged Number of OK frames with VLAN tag.
(Type field = 0x8100).
Port_Index +
0x55 R 0x00000000
Table 93 MAC TX Statistics ($ Port_Index +0x40 – +0x58) (Sheet 3 of 4)
Name Description Address Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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8.4.4 PHY Autoscan Registers
Note: These register hold the current values of the PHY registers only when Autoscan (see
Section 5.5.8, Autoscan Operation, on page 99) is enabled and the IXF1104 MAC is
configured in copper mode. These registers are not applicable in fiber mode.
TxCRCError
Number of frames transmitted with a
legal size but with the wrong CRC field
(also called FCS field).
Port_Index +
0x56 R 0x00000000
TxPauseFrames Number of pause MAC frames
transmitted.
Port_Index +
0x57 R 0x00000000
TxFlowControlCollisions
Send
Intentionally generates collisions to
curb reception of incoming traffic due to
insufficient memory available for
additional frames. The port must be in
half-duplex mode with flow control
enabled.
Note: To receive a correct statistic, a
last frame may have to be
transmitted after the last flow
control collisions send.
Note: NA - half-duplex only
Port_Index +
0x58 R 0x00000000
Table 93 MAC TX Statistics ($ Port_Index +0x40 – +0x58) (Sheet 4 of 4)
Name Description Address Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 94 PHY Control ($ Port Index + 0x60) (Sheet 1 of 2)
Bit Name Description Type1Default
0x00000010
001000
31:16 Reserved Reserved RO 0x0000
15 Reset
PHY Soft Reset. Resets the PHY registers to their
default value.
This register bit self-clears after the reset is
complete.
0 = Normal Operation
1 = PHY reset
RO 0
14 Loopback 0 = Disable loopback mode
1 = Enable loopback mode RO 0
13 Speed Selection
0.6 (Speed<1> 0.13 (Speed<0>)
00 = 10 Mbps
01 = 100 Mbps
10 = 1000 Mbps (manual mode not allowed)
11 = Reserved
RO 02
12 Auto-Negotiation
Enable
0 = Disable auto-negotiation process
1 = Enable auto-negotiation process
This register bit must be enabled for
1000BASE-T operation.
RO 1
11 Power-Down 0 = Normal operation
1 = Power-down RO 0
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
2. This register is ignored if auto-negotiation is enabled.
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10 Isolate 0 =
1 = Electrically isolate PHY from GMII RO 0
9Restart
Auto-Negotiation
0 = Normal operation
1 = Restart auto-negotiation process RO 0
8 Duplex Mode 0 = Half-duplex mode
1 = Full-duplex mode RO 12
7 Collision Test
0 = Disable COL signal test
1 = Enable COL signal test
This register bit is ignored unless loopback is
enabled (Register bit 0.14 = 1)
RO 0
6Speed Selection
1000 Mbps
0.6 (Speed<1>) 0.13 (Speed<0>)
00 = 10 Mbps
01 = 100 Mbps
10 = 1000 Mbps (manual mode now allowed)
11 = Reserved
RO 02
5:0 Reserved Reserved RO 0
Table 94 PHY Control ($ Port Index + 0x60) (Sheet 2 of 2)
Bit Name Description Type1Default
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
2. This register is ignored if auto-negotiation is enabled.
Table 95 PHY Status ($ Port Index + 0x61) (Sheet 1 of 2)
Bit Name Description Type1Default
0x001111001
00001001
31:16 Reserved Reserved RO 0
15 100BASE-T4 0 = PHY not able to operate in 100BASE-T4
1 = PHY able to operate in 100BASE-T4 RO 0
14 100BASE-X
Full-Duplex
0 = PHY not able to operate in 100BASE-X in full-
duplex mode
1 = PHY able to operate in 100BASE-X in full-
duplex mode
RO 1
13 100BASE-X
Half-Duplex
0 = PHY not able to operate in 100BASE-X in half-
duplex mode
1 = PHY able to operate in 100BASE-X in half-
duplex mode
RO 1
12 10 Mbps
Full-Duplex
0 = PHY not able to operate in 10 Mbps in full-
duplex mode
1 = PHY able to operate in 10 Mbps in full-duplex
mode
RO 1
11 10 Mbps
Half-Duplex
0 = PHY not able to operate in 10 Mbps in half-
duplex mode
1 = PHY able to operate in 10 Mbps in half-duplex
mode
RO 1
10 100BASE-T2
Full-Duplex
0 = PHY not able to operate in 10BASE-T2 in full-
duplex mode (not supported)
1 = PHY able to operate in 100BASE-T2 in full-
duplex mode
RO 0
1. R = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
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9100BASE-T2
Half-Duplex
0 = PHY not able to operate in 100BASE-T2 in
half-duplex mode
1 = PHY able to operate in 100BASE-T2 in half-
duplex mode
RO 0
8 Extended Status 0 = No extended status information in Register 15
1 = Extended status information in Register 15 RO 1
7 Reserved Reserved RO 0
6MF Preamble
Suppression
0 = PHY will not accept management frames with
preamble suppressed
1 = PHY will accept management frames with
preamble suppressed
RO 0
5 Reserved Reserved RO 0
4 Remote Fault 0 =
1 = Remote fault condition detected RO 0
3Auto-Negotiation
Ability
0 =
1 = PHY is able to perform auto-negotiation RO 1
2 Link Status 0 = Link is down
1 = Link is up RO 0
1 Jabber Detect 0 = Jabber condition not detected
1 = Jabber condition detected RO 0
0 Extended Capability 0 = No extended register capabilities
1 = Extended register capabilities RO 1
Table 95 PHY Status ($ Port Index + 0x61) (Sheet 2 of 2)
Bit Name Description Type1Default
1. R = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
Table 96 PHY Identification 1 ($ Port Index + 0x62)
Bit Name Description Type1Default
0x00013
31:16 Reserved Reserved RO 0
15:0 PHY ID Number
The PHY identifier is composed of register bits
18:3 of the OUI (Organizationally Unique
Identifier)
RO h0013
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
Table 97 PHY Identification 2 ($ Port Index + 0x63) (Sheet 1 of 2)
Bit Name Description Type1Default
0x001111001
00000000
31:16 Reserved Reserved RO 0
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
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15:10 PHY ID Number
The PHY identifier is composed of register bits
24:19 of the OUI (Organizationally Unique
Identifier)
RO 011110
9:4 Manufacturer’s Model Six bits containing the manufacturer’s part number RO 010000
3:0 Manufacturer’s
Revision Number
Four bits containing the manufacturer’s revision
number RO 0000
Table 97 PHY Identification 2 ($ Port Index + 0x63) (Sheet 2 of 2)
Bit Name Description Type1Default
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
Table 98 Auto-Negotiation Advertisement ($ Port Index + 0x64) (Sheet 1 of 2)
Bit Name Description Type1Default
0x00000100
111100001
31:16 Reserved Reserved RO 0
15 Next Page 0 =
1 = Manual control of Next Page (software) RO 0
14 Reserved Reserved RO 0
13 Remote Fault 0 = No remote fault
1 = Remote fault RO 0
12 Reserved Reserved RO 0
11 ASM_DIR
Advertise Asymmetric Pause Direction register bit.
This register bit is used in conjunction with Pause
(Register bit 4.10)
0 = Link partner is not capable of asymmetric
pause
1 = Link partner is capable of asymmetric pause
RO 1
10 Pause Advertise to link partner that Pause operation is
desired (IEEE 802.3x Standard) RO 0
9 100BASE-T4
0 = 100BASE-T4 capability is not available
1 = 100BASE-T4 capability is available
The IXF1104 MAC does not support 100BASE-T4,
but allows this register bit to be set to advertise in
auto-negotiation sequence for 100BASE-T4
operation. If this capability is desired, an external
100BASE-T4 transceiver can be switched in.
RO 0
8100BASE-TX
Full-Duplex
0 = DTE is not 100BASE-TX, full-duplex mode
capable
1 = DTE is 100BASE-TX, full-duplex mode
capable
RO 1
7100BASE-TX
Half-Duplex
0 = DTE is not 100BASE-TX, half-duplex mode
capable
1 = DTE is 100BASE-TX, half-duplex mode
capable
RO 1
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
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610BASE-T
Full-Duplex
0 = DTE is not 10BASE-T, full-duplex mode
capable
1 = DTE is 10BASE-T, full-duplex mode capable
RO 1
510BASE-T
Half-Duplex
0 = DTE is not 10BASE-T, half-duplex mode
capable
1 = DTE is 10BASE-T, half-duplex mode capable
RO 1
4:0 Selector Field,
S[4:0]
00001 =IEEE 802.3
00010 =IEEE 802.9 ISLAN-16T
Reserved for future auto-negotiation
development
11111 = Reserved for future auto-negotiation
development
Unspecified or reserved combinations should not
be transmitted
Setting this field to a value other than 00001 will
most likely cause auto-negotiation to fail
RO 00001
Table 98 Auto-Negotiation Advertisement ($ Port Index + 0x64) (Sheet 2 of 2)
Bit Name Description Type1Default
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
Table 99 Auto-Negotiation Link Partner Base Page Ability ($ Port Index + 0x65)
(Sheet 1 of 2)
Bit Name Description Type1Default
0x0---
01001111000
01
31:16 Reserved Reserved RO 0
15 Next Page
0 = Link partner has no ability to send multiple
pages
1 = Link partner has the ability to send multiple
pages
RO NA
14 Acknowledge
0 = Link partner has not received Link Code Word
from the IXF1104 MAC
1 = Link partner has received Link Code Word
from the IXF1104 MAC
RO NA
13 Remote Fault 0 = No remote fault
1 = Remote fault RO NA
12 Reserved Reserved RO 0
11 ASM_DIR
Advertise Asymmetric Pause Direction Register
bit. This register bit is used in conjunction with
Pause (Register bit 4.10)
0 = Link partner is not capable of asymmetric
pause
1 = Link partner is capable of asymmetric pause
RO 1
10 Link Partner Pause Link partner wants to utilize Pause Operation as
defined in IEEE 802.3x Standard RO 0
9 1000BASE-T4 0 = Link partner is not 100BASE-T4 capable
1 = Link partner is 100BASE-T4 capable RO 0
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
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8100BASE-TX
Full-Duplex
0 = Link partner is not 100BASE-TX, full-duplex
mode capable
1 = Link partner is 100BASE-TX, full-duplex mode
capable
RO 1
7100BASE-TX
Half-Duplex
0 = Link partner is not 100BASE-TX, half-duplex
mode capable
1 = Link partner is 100BASE-TX, half-duplex mode
capable
RO 1
610BASE-T
Full-Duplex
0 = Link partner is not 10BASE-T, full-duplex mode
capable
1 = Link partner is 10BASE-T, full-duplex mode
capable
RO 1
510BASE-T
Half-Duplex
0 = Link partner is not 10BASE-T, half-duplex
mode capable
1 = Link partner is 10BASE-T, half-duplex mode
capable
RO 1
4:0 Selector Field, S[4:0]
00001 =IEEE 802.3
00010 =IEEE 802.9 ISLAN-16T
00000 =Reserved for future auto-negotiation
development
11111 = Reserved for future auto-negotiation
development
Unspecified or reserved combinations should not
be transmitted
Setting this field to a value other than 00001 will
most likely cause auto-negotiation to fail
RO 00001
Table 99 Auto-Negotiation Link Partner Base Page Ability ($ Port Index + 0x65)
(Sheet 2 of 2)
Bit Name Description Type1Default
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
Table 100 Auto-Negotiation Expansion ($ Port Index + 0x66) (Sheet 1 of 2)
Bit Name Description Type1Default
0x0000000
31:6 Reserved Reserved RO 0
5 Base Page
This register bit indicates the status of the auto-
negotiation variable, base page. It flags
synchronization with the auto-negotiation state
diagram allowing detection of interrupted links.
This register bit is only used if Register bit 16.1
(alternate Next Page feature) is set.
0 = base_page = false
1 = base_page = true
RO 0
4Parallel Detection
Fault
0 = Parallel detection fault has not occurred
1 = Parallel detection fault has occurred RO 0
3Link Partner Next Page
Able
0 = Link partner is not Next Page able
1 = Link partner is Next Page able RO 0
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
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8.4.5 Global Status and Configuration Register Overview
Table 102 through Table 111, JTAG ID ($0x50C), on page 184 provide an overview for the
Global Control and Status Registers.
2 Next Page Able 0 = Local device is not Next Page able
1 = Local device is Next Page able RO 0
1 Page Received
Indicates that a new page has been received and
the received code word has been loaded into
Register 5 (base pages) or Register 8 (next pages)
as specified in the EEE 802.3 Standard.
This bit clears on Read.
RO 0
0Link Partner Auto-
Negotiation Able
0 = Link partner is not auto-negotiation able
1 = Link partner is auto-negotiation able RO 0
Table 100 Auto-Negotiation Expansion ($ Port Index + 0x66) (Continued) (Sheet 2 of 2)
Bit Name Description Type1Default
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
Table 101 Auto-Negotiation Next Page Transmit ($ Port Index + 0x67)
Bit Name Description Type1Default
0x0000000
31:16 Reserved Reserved RO 0
15 Next Page (NP) 0 = Last page
1 = Additional Next Pages follow RO 0
14 Reserved Reserved RO 0
13 Message Page (MP) 0 = Unformatted page
1 = Message page RO 0
12 Acknowledge 2 0 = Cannot comply with message
1 = Complies with message RO 0
11 Toggle (T)
0 = Previous value of the transmitted Link Code
Word was logic one
1 = Previous value of the transmitted Link Code
Word was logic zero
RO 0
10:0 Message/Unformatted
Code Field
11-bit message code field
See IEEE 802.3 Annex 28C RO 0
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
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Table 102 Port Enable ($0x500)
Bit Name Description Type*Default
Register Description: A control register for each port in the IXF1104 MAC. Port ID = bit
position in the register. To make a port active, the bit must be set High. For example, Port 2
active implies a register value of 0000.0100. Setting the bit to 0 de-asserts the enable. The
default state for this register is for all four ports to be disabled.
0x00000000
31:4 Reserved Reserved RO 0x0000000
3 Port 3 Enable
Port 3
0 = Disable
1 = Enable
R/W 0
2 Port 2 Enable
Port 2
0 = Disable
1 = Enable
R/W 0
1 Port 1 Enable
Port 1
0 = Disable
1 = Enable
R/W 0
0 Port 0 Enable
Port 0
0 = Disable
1 = Enable
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 103 Interface Mode ($0x501)
Bit Name Description Type1Default
Register Description: If_Mode – Four bits of this register determines the PHY interface
mode.
0 = Fiber (SerDes/OMI interface)
1 = Copper (GMII or RGMII interface)
Changes to the data setting of this register must be made in conjunction with theClock and
Interface Mode Change Enable Ports 0 - 3 ($0x794) to ensure a safe transition to a new
operational mode (see Section 6.1, Change Port Mode Initialization Sequence, on page 124).
The Enable clock mode change bit has to be set back to 1 after the configuration change takes
effect.
0x00000000
31:4 Reserved Reserved RO 0x0000000
3 Port 3 Interface Mode 0 = Fiber mode
1 = Copper mode R/W 0
2 Port 2 Interface Mode 0 = Fiber mode
1 = Copper mode R/W 0
1 Port 1 Interface Mode 0 = Fiber mode
1 = Copper mode R/W 0
0 Port 0 Interface Mode 0 = Fiber mode
1 = Copper mode R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 104 Link LED Enable ($0x502)
Bit Name Description Type1Default
Register Description: Per port bit should be set upon detection of link to enable proper
operation of the link LEDs. 0x00000000
31:4 Reserved Reserved R/W 0x00000
3 Link LED Enable Port 3
Port 3 link
0 = No link
1 = Link
R/W 0
2 Link LED Enable Port 2
Port 2 link
0 = No link
1 = Link
R/W 0
1 Link LED Enable Port 1
Port 1 link
0 = No link
1 = Link
R/W 0
0 Link LED Enable Port 0
Port 0 link
0 = No link
1 = Link
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 105 MAC Soft Reset ($0x505)
Bit Name Description Type1Default
Register Description: Per-port software-activated reset of the MAC core. 0x00000000
31:4 Reserved Reserved R/W 0x00000
3 Software Reset MAC 3
Port 3
0 = Reset inactive
1 = Enable
R/W 0
2 Software Reset MAC 2
Port 2
0 = Reset inactive
1 = Enable
R/W 0
1 Software Reset MAC 1
Port 1
0 = Reset inactive
1 = Enable
R/W 0
0 Software Reset MAC 0
Port 0
0 = Reset inactive
1 = Enable
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 106 MDIO Soft Reset ($0x506)
Bit Name Description Type1Default
Register Description: Software-activated reset of the MDIO module. The MDIO controller
inside of the IXF1104 is reset by bit 0. The IXF1104 MDIO registers and the PHY MDIO
registers are not reset.
0x00000000
31:1 Reserved Reserved RO 0x00000000
0 Software MDIO Reset 0 = Reset inactive
1 = Reset active R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 107 CPU Interface ($0x508)
Bit Name Description Type1Default
Register Description: CPU Interface Endian select. Allows the user to select the Endian of
the CPU interface to allow for various CPUs to be connected to the IXF1104 MAC. 0x00000000
31:25 Reserved Reserved RO 0x00
24 CPU Endian
Reserved in Little Endian
Valid in Big endian
0 = Little Endian
1 = Big Endian
R/W 0
23:1 Reserved Reserved RO 0x000000
0 CPU Endian Control
Reserved in Big Endian
Valid in Little Endian
0 = Little Endian
1 = Big Endian
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Note: Since the Endianess of the bus is unknown when writing to this register, write 0x01000001 to set the
bit and 0x0 to clear it.
Table 108 LED Control ($0x509)
Bit Name Description Type1Default
Register Description: Global selection of LED mode. 0x00000000
31:2 Reserved Reserved RO 0x00000000
1 LED Enable 0 = Disable LED Block
1 = Enable LED Block R/W 0
0LED Control
0 = Enable LED Mode 0 for use with SGS
Thomson M5450 LED driver (Default)
1 = LED Mode 1 for use with Standard Octal Shift
register
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 109 LED Flash Rate ($0x50A)
Bit Name Description Type1Default
Register Description: Global selection of LED flash rate. 0x00000000
31:3 Reserved Reserved RO 0x00000000
2:0 LED Flash Rate
Control
000 =100 ms flash rate
001 =200 ms flash rate
010 =300 ms flash rate
011 = 400 ms flash rate
100 =500 ms flash rate
101 =Reserved
110 = Reserved
111 = Reserved
R/W 000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 110 LED Fault Disable ($0x50B)
Bit Name Description Type1Default
Register Description: Per-port fault disable. Disables the LED flashing for local or remote
faults. 0x00000000
31:4 Reserved Reserved RO 0x0000000
3LED Port 3 Fault
Control
Port 3
0 = Fault enabled
1 = Fault disabled
R/W 0
2LED Port 2 Fault
Control
Port 2
0 = Fault enabled
1 = Fault disabled
R/W 0
1LED Port 1 Fault
Control
Port 1
0 = Fault enabled
1 = Fault disabled
R/W 0
0LED Port 0 Fault
Control
Port 0
0 = Fault enabled
1 = Fault disabled
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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8.4.6 RX FIFO Register Overview
Table 112 through Table 130 provide an overview of the RX FIFO registers, which include
the RX FIFO High and Low watermarks.
Table 111 JTAG ID ($0x50C)
Bit Name Description Type1Default
Register Description: The value of this register follows the same scheme as the device
identification register found in the IEEE 1149.1 specification. The upper four bits correspond to
silicon stepping. The next 16 bits store a Part ID Number. The next 11 bits contain a JEDEC
manufacturer ID. Bit zero = 1 if the chip is the first in a stack. The encoding scheme used for
the Product ID field is implementation-dependent.
0x10450013
31:28 Version Version RO 00012
27:12 Part ID Part ID RO 0000010001
010000
11:8 JEDEC Continuation
Characters JEDEC Continuation Characters RO 0000
7:1 JEDEC ID JEDEC ID RO 0001001
0Fixed Fixed RO 1
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
2. These bits vary with stepping.
Table 112 RX FIFO High Watermark Port 0 ($0x580)
Bit Name Description Type1Default
Register Description: The default value of 0x0E6 represents 230 eight-byte locations. This
equates to 1840 bytes of data. A unit entry in this register equates to 8 bytes of data. When the
amount of data stored in the RX FIFO exceeds the high watermark, flow control is
automatically initiated within the MAC to avoid an overflow condition.
0x0E6
31:12 Reserved Reserved RO 0x00000
11: 0 RX FIFO High
Watermark Port 0
The high water mark value.
Note: Must be greater than the RX FIFO Low
Watermark and RX FIFO transfer
threshold.
R/W 0x0E6
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 113 RX FIFO High Watermark Port 1 ($0x581)
Bit Name Description Type1Default
Register Description: The default value of 0x0E6 represents 230 eight-byte locations. This
equates to 1840 bytes of data. A unit entry in this register equates to 8 bytes of data. When the
amount of data stored in the RX FIFO exceeds the high watermark, flow control is
automatically initiated within the MAC to avoid an overflow condition.
0x0E6
31:12 Reserved Reserved RO 0x00000
11: 0 RX FIFO High
Watermark Port 1
The high water mark value.
Note: Must be greater than the RX FIFO Low
Watermark and RX FIFO transfer
threshold.
R/W 0x0E6
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 114 RX FIFO High Watermark Port 2 ($0x582)
Bit Name Description Type1Default
Register Description: The default value of 0x0E6 represents 230 eight-byte locations. This
equates to 1840 bytes of data. A unit entry in this register equates to 8 bytes of data. When the
amount of data stored in the RX FIFO exceeds the high watermark, flow control is
automatically initiated within the MAC to avoid an overflow condition.
0x0E6
31:12 Reserved Reserved RO 0x00000
11: 0 RX FIFO High
Watermark Port 2
The high water mark value.
Note: Must be greater than the RX FIFO Low
Watermark and RX FIFO transfer
threshold.
R/W 0x0E6
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 115 RX FIFO High Watermark Port 3 ($0x583)
Bit Name Description Type1Default
Register Description: The default value of 0x0E6 represents 230 eight-byte locations. This
equates to 1840 bytes of data. A unit entry in this register equates to 8 bytes of data. When the
amount of data stored in the RX FIFO exceeds the high watermark, flow control is
automatically initiated within the MAC to avoid an overflow condition.
0x0E6
31:12 Reserved Reserved RO 0x00000
11: 0 RX FIFO High
Watermark Port 3
The high water mark value.
Note: Must be greater than the RX FIFO Low
Watermark and RX FIFO transfer
threshold.
R/W 0x0E6
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 116 RX FIFO Low Watermark Port 0 ($0x58A)
Bit Name Description Type1Default
Register Description: The default value of 0x072 represents 114 eight-byte locations. This
equates to 912 bytes of data. A unit entry in this register equates to 8 bytes of data. When the
amount of data stored in the RX FIFO falls below the Low Watermark, flow control is
automatically de-asserted within the MAC to allow more line-side data to be captured by the
RX FIFO.
0x072
31:12 Reserved Reserved RO 0x00000
11: 0 RX FIFO Low
Watermark Port 0
The High Watermark value
Note: Should never be greater or equal to the
High Watermark.
R/W 0x072
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 117 RX FIFO Low Watermark Port 1 ($0x58B)
Bit Name Description Type1Default
Register Description: The default value of 0x072 represents 114 eight-byte locations. This
equates to 912 bytes of data. A unit entry in this register equates to 8 bytes of data. When the
amount of data stored in the RX FIFO falls below the Low Watermark, flow control is
automatically de-asserted within the MAC to allow more line-side data to be captured by the
RX FIFO.
0x072
31:12 Reserved Reserved RO 0x00000
11: 0 RX FIFO Low
Watermark Port 1
The High Watermark value
Note: Should never be greater or equal to the
High Watermark.
R/W 0x072
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 118 RX FIFO Low Watermark Port 2 ($0x58C)
Bit Name Description Type1Default
Register Description: The default value of 0x072 represents 114 eight-byte locations. This
equates to 912 bytes of data. A unit entry in this register equates to 8 bytes of data. When the
amount of data stored in the RX FIFO falls below the Low Watermark, flow control is
automatically de-asserted within the MAC to allow more line-side data to be captured by the
RX FIFO.
0x072
31:12 Reserved Reserved RO 0x00000
11: 0 RX FIFO Low
Watermark Port 2
The High Watermark value
Note: Should never be greater or equal to the
High Watermark.
R/W 0x072
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 119 RX FIFO Low Watermark Port 3 ($0x58D)
Bit Name Description Type1Default
Register Description: The default value of 0x072 represents 114 eight-byte locations. This
equates to 912 bytes of data. A unit entry in this register equates to 8 bytes of data. When the
amount of data stored in the RX FIFO falls below the Low watermark, flow control is
automatically de-asserted within the MAC to allow more line-side data to be captured by the
RX FIFO.
0x072
31:12 Reserved Reserved RO 0x00000
11: 0 RX FIFO Low
Watermark Port 3
The High watermark value
Note: Should never be greater or equal to the
High Watermark.
R/W 0x072
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 120 RX FIFO Overflow Frame Drop Counter Ports 0 - 3 ($0x594 – 0x597)
Name Description Address Type1Default
RX FIFO Overflow
Frame Drop
Counter on port 0
When RX FIFO on port 0 becomes full or
reset, the number of frames lost/dropped on
this port are shown in this register.
0x594 R 0x00000000
RX FIFO Overflow
Frame Drop
Counter on port 1
When RX FIFO on port 1 becomes full or
reset, the number of frames lost/dropped on
this port are shown in this register.
0x595 R 0x00000000
RX FIFO Overflow
Frame Drop
Counter on port 2
When RX FIFO on port 2 becomes full or
reset, the number of frames lost/dropped on
this port are shown in this register.
0x596 R 0x00000000
RX FIFO Overflow
Frame Drop
Counter on port 3
When RX FIFO on port 3 becomes full or
reset, the number of frames lost/dropped on
this port are shown in this register.
0x597 R 0x00000000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 121 RX FIFO Port Reset ($0x59E) (Sheet 1 of 2)
Bit Name Description Type1Default
Register Description: The soft reset register for each port in the RX block. Port ID = bit
position in the register. To make the reset active, the bit must be set High. For example, reset
of port 1 implies register value = 0000_0018. Setting the bit to 0 de-asserts the reset.
0x00000000
31:4 Reserved Reserved RO 0x0000000
3Reset RX FIFO for
Port 3
Port 3
0 = De-assert reset
1 = Reset
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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2Reset RX FIFO for
Port 2
Port 2
0 = De-assert reset
1 = Reset
R/W 0
1Reset RX FIFO for
Port 1
Port 1
0 = De-assert reset
1 = Reset
R/W 0
0Reset RX FIFO for
Port 0
Port 0
0 = De-assert reset
1 = Reset
R/W 0
Table 121 RX FIFO Port Reset ($0x59E) (Sheet 2 of 2)
Bit Name Description Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 122 RX FIFO Errored Frame Drop Enable ($0x59F)
Bit Name Description Type1Default
Register Description: This register configures the dropping of error packets (DEBAD).
Note: Jumbo packets are not dropped.
0x00000000
31:4 Reserved Reserved RO 0x0000000
3
RX FIFO Errored
Frame Drop Enable
Port 3
This bit is used in conjunction with MAC filter bits.
This allows the user to select whether the errored
packets are to be dropped or not.
1 = Frame Drop Enable
0 = Frame Drop Disable
R/W 0
2
RX FIFO Errored
Frame Drop Enable
Port 2
This bit is used in conjunction with MAC filter bits.
This allows the user to select whether the errored
packets are to be dropped or not.
1 = Frame Drop Enable
0 = Frame Drop Disable
R/W 0
1
RX FIFO Errored
Frame Drop Enable
Port 1
This bit is used in conjunction with MAC filter bits.
This allows the user to select whether the errored
packets are to be dropped or not.
1 = Frame Drop Enable
0 = Frame Drop Disable
R/W 0
0
RX FIFO Errored
Frame Drop Enable
Port 0
This bit is used in conjunction with MAC filter bits.
This allows the user to select whether the errored
packets are to be dropped or not.
1 = Frame Drop Enable
0 = Frame Drop Disable
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 123 RX FIFO Overflow Event ($0x5A0)
Bit Name Description Type1Default
Register Description: This register provides a status if a FIFO-full situation occurs (for
example, a FIFO overflow). The bit position equals the port number. This register is cleared on
Read.
0x00000000
31:4 Reserved Reserved RO 0x0000000
3RX FIFO Overflow
Event on Port 3
Port 3
0 = FIFO overflow event did not occur
1 = FIFO overflow event occurred
R0
2RX FIFO Overflow
Event on Port 2
Port 2
0 = FIFO overflow event did not occur
1 = FIFO overflow event occurred
R0
1RX FIFO Overflow
Event on Port 1
Port 1
0 = FIFO overflow event did not occur
1 = FIFO overflow event occurred
R0
0RX FIFO Overflow
Event on Port 0
Port 0
0 = FIFO overflow event did not occur
1 = FIFO overflow event occurred
R0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 124 RX FIFO Errored Frame Drop Counter Ports 0 - 3 ($0x5A2 - 0x5A5)
(Sheet 1 of 2)
Name Description Address Type Default
RX FIFO Errored
Frame Drop Counter
on Port 0
This register counts all frames dropped from the
RX FIFO for port 0 by meeting one of the
following conditions:
• Frames are removed in conjunction with RX
Packet Filter Control ($ Port_Index + 0x19).
• Frames are greater than the Max Frame
Size (Addr: Port_Index + 0x0F).
This register is cleared on Read.
0x5A2 R 0x00000000
RX FIFO Errored
Frame Drop Counter
on Port 1
This register counts all frames dropped from the
RX FIFO for port 1 by meeting one of the
following conditions:
• Frames are removed in conjunction with RX
Packet Filter Control ($ Port_Index + 0x19).
• Frames are greater than Max Frame Size
(Addr: Port_Index + 0x0F).
This register is cleared on Read.
0x5A3 R 0x00000000
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RX FIFO Errored
Frame Drop Counter
on Port 2
This register counts all frames dropped from the
RX FIFO for port 2 by meeting one of the
following conditions:
• Frames are removed in conjunction with RX
Packet Filter Control ($ Port_Index + 0x19).
• Frames are greater than Max Frame Size
(Addr: Port_Index + 0x0F).
This register is cleared on Read.
0x5A4 R 0x00000000
RX FIFO Errored
Frame Drop Counter
on Port 3
This register counts all frames dropped from the
RX FIFO for port 3 by meeting one of the
following conditions:
• Frames are removed in conjunction with RX
Packet Filter Control ($ Port_Index + 0x19).
• Frames are greater than Max Frame Size
(Addr: Port_Index + 0x0F).
This register is cleared on Read.
0x5A5 R 0x00000000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear;
R/W/C = Read/Write, Clear on Write
Table 124 RX FIFO Errored Frame Drop Counter Ports 0 - 3 ($0x5A2 - 0x5A5)
(Sheet 2 of 2)
Name Description Address Type Default
Table 125 RX FIFO SPI3 Loopback Enable for Ports 0 - 3 ($0x5B2)
Bit Name Description Type1Default
Register Description: Enables the TX SPI3 port to send packets into the RX_FIFO instead of
into the TX FIFO, creating a SPI3 loopback. 0x00000000
31:12 Reserved Reserved RO 0x00000
11 SPI3 loopback enable
for Port 3
0 = Disabled
1 = Enabled R/W 0x0
10 SPI3 loopback enable
for Port 2
0 = Disabled
1 = Enabled R/W 0x0
9SPI3 loopback enable
for Port 1
0 = Disabled
1 = Enabled R/W 0x0
8SPI3 loopback enable
for Port 0
0 = Disabled
1 = Enabled R/W 0x0
7:0 Reserved Write as 0, ignore on Read. R/W 0x00
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 126 RX FIFO Padding and CRC Strip Enable ($0x5B3)
Bit Name Description Type1Default
Register Description: This control register enables to pre-pend every packet with two extra
bytes and also enables the CRC stripping of a packet. 0x00000000
31:8 Reserved Reserved RO 0x000000
7CRC Stripping Enable
for Port 3
CRC stripping is enabled for Port 3.
0 = Disabled
1 = Enabled
R/W 0
6CRC Stripping Enable
for Port 2
CRC stripping is enabled for Port 2.
0 = Disabled
1 = Enabled
R/W 0
5CRC Stripping Enable
for Port 1
CRC stripping is enabled for Port 1.
0 = Disabled
1 = Enabled
R/W 0
4CRC Stripping Enable
for Port 0
CRC stripping is enabled for Port 0.
0 = Pre-pending Disabled
1 = Pre-pending Enabled
R/W 0
3Pre-pending Enable2
Port 3
Enables pre-pending of two bytes at the start of
every packet – Port 3.
0 = Disabled
1 = Enabled
R/W 0
2Pre-pending Enable2
Port 2
Enables pre-pending of two bytes at the start of
every packet – Port 2.
0 = Disabled
1 = Enabled
R/W 0
1Pre-pending Enable2
Port 1
Enables pre-pending of two bytes at the start of
every packet – Port 1.
0 = Disabled
1 = Enabled
R/W 0
0Pre-pending Enable2
Port 0
Enables pre-pending of two bytes at the start of
every packet – Port 0.
0 = Disabled
1 = Enabled
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
2. Pre-pending should not be enabled in loopback mode.
Table 127 RX FIFO Transfer Threshold Port 0 ($0x5B8) (Sheet 1 of 2)
Bit Name Description Type Default
Register Description: RX FIFO transfer threshold for port 0 in 8-byte location. 0x000000BE
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31:12 Reserved Reserved RO 0x00000
11:0 RX FIFO Transfer
Threshold - Port 0
RX FIFO transfer threshold for port 0. This must
be less than the RX FIFO High water mark.
User definable control register that sets the
threshold where a packet starts transitioning to the
SPI3 interface from the RX FIFO before the EOP
is received. Packets received in the RX FIFO
below this threshold are treated as store and
forward.
Note: Do not program the RX FIFO transfer
threshold below a setting of 0xBE
(1520bytes).
R/W 0x0BE
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 128 RX FIFO Transfer Threshold Port 1 ($0x5B9)
Bit Name Description Type Default
Register Description: RX FIFO transfer threshold for port 1in 8-byte location. 0x000000BE
31:12 Reserved Reserved RO 0x00000
11:0 RX FIFO Transfer
Threshold - Port 1
RX FIFO transfer threshold for port 1. This must
be less than the RX FIFO High watermark.
User definable control register that sets the
threshold where a packet starts transitioning to
the SPI3 interface from the RX FIFO before the
EOP is received. Packets received in the RX
FIFO below this threshold are treated as store
and forward.
Note: Do not program the RX FIFO transfer
threshold below a setting of 0xBE
(1520bytes).
R/W 0x0BE
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 127 RX FIFO Transfer Threshold Port 0 ($0x5B8) (Sheet 2 of 2)
Table 129 RX FIFO Transfer Threshold Port 2 ($0x5BA)
Bit Name Description Type Default
Register Description: RX FIFO transfer threshold for port 2 in 8-byte location. 0x000000BE
31:12 Reserved Reserved RO 0x00000
11:0 RX FIFO Transfer
Threshold - Port 2
RX FIFO transfer threshold for port 2. This must be
less than the RX FIFO High water mark.
User definable control register that sets the
threshold where a packet starts transitioning to the
SPI3 interface from the RX FIFO before the EOP is
received. Packets received in the RX FIFO below
this threshold are treated as store and forward.
Note: Do not program the RX FIFO transfer
threshold below a setting of 0xBE
(1520bytes).
R/W 0x0BE
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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8.4.7 TX FIFO Register Overview
Table 131 through Table 138 provide an overview of the TX FIFO registers, which include
the TX FIFO High and Low watermark.
Table 130 RX FIFO Transfer Threshold Port 3 ($0x5BB)
Bit Name Description Type Default
Register Description: RX FIFO transfer threshold for port 3 in 8-byte location. 0x000000BE
31:12 Reserved Reserved RO 0x00000
11:0 RX FIFO Transfer
Threshold - Port 3
RX FIFO transfer threshold for port 3. This must
be less than the RX FIFO High water mark.
User definable control register that sets the
threshold where a packet starts transitioning to the
SPI3 interface from the RX FIFO before the EOP
is received. Packets received in the RX FIFO
below this threshold are treated as store and
forward.
Note: Do not program the RX FIFO transfer
threshold below a setting of 0xBE
(1520bytes).
R/W 0x0BE
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 131 TX FIFO High Watermark Ports 0 - 3 ($0x600 – 0x603) (Sheet 1 of 2)
Name Description Address Type1Default
TX FIFO High
Watermark Port 0
High watermark for TX FIFO Port 0. The
default value of 0x3E0 represents 992 8-byte
locations. This equates to 7936 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO exceeds the high watermark, flow control
is automatically initiated on the SPI3 interface to
request that the switch fabric stops data
transfers to avoid an overflow condition.
0x600 R/W 0x000003E0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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TX FIFO High
Watermark Port 1
High watermark for TX FIFO Port 1. The
default value of 0x3E0 represents 992 8-byte
locations. This equates to 7936 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO exceeds the high watermark, flow control
is automatically initiated on the SPI3 interface to
request that the switch fabric stops data
transfers to avoid an overflow condition.
0x601 R/W 0x000003E0
TX FIFO High
Watermark Port 2
High watermark for TX FIFO Port 2. The
default value of 0x3E0 represents 992 8-byte
locations. This equates to 7936 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO exceeds the high watermark, flow control
is automatically initiated on the SPI3 interface to
request that the switch fabric stops data
transfers to avoid an overflow condition.
0x602 R/W 0x000003E0
TX FIFO High
Watermark Port 3
High watermark for TX FIFO Port 3. The
default value of 0x3E0 represents 992 8-byte
locations. This equates to 7936 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO exceeds the high watermark, flow control
is automatically initiated on the SPI3 interface to
request that the switch fabric stops data
transfers to avoid an overflow condition.
0x603 R/W 0x000003E0
Table 131 TX FIFO High Watermark Ports 0 - 3 ($0x600 – 0x603) (Sheet 2 of 2)
Name Description Address Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 132 TX FIFO Low Watermark Register Ports 0 - 3 ($0x60A – 0x60D)
Name Description Address Type1Default
TX FIFO Low
Watermark Port 0
Low watermark for TX FIFO Port 0. The
default value of 0x0D0 represents 208 8-byte
locations. This equates to 1664 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO falls below the low watermark, flow control
is automatically de-asserted on the SPI3
interface to allow further data to be sent by the
switch fabric to the IXF1104 MAC.
0x60A R/W 0x000000D0
TX FIFO Low
Watermark Port 1
Low watermark for TX FIFO Port 1. The
default value of 0x0D0 represents 208 8-byte
locations. This equates to 1664 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO falls below the low watermark, flow control
is automatically de-asserted on the SPI3
interface to allow further data to be sent by the
switch fabric to the IXF1104 MAC.
0x60B R/W 0x000000D0
TX FIFO Low
Watermark Port 2
Low watermark for TX FIFO Port 2. The
default value of 0x0D0 represents 208 8-byte
locations. This equates to 1664 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO falls below the low watermark, flow control
is automatically de-asserted on the SPI3
interface to allow further data to be sent by the
switch fabric to the IXF1104 MAC.
0x60C R/W 0x000000D0
TX FIFO Low
Watermark Port 3
Low watermark for TX FIFO Port 3. The
default value of 0x0D0 represents 208 8-byte
locations. This equates to 1664 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO falls below the low watermark, flow control
is automatically de-asserted on the SPI3
interface to allow further data to be sent by the
switch fabric to the IXF1104 MAC.
0x60D R/W 0x000000D0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 133 TX FIFO MAC Threshold Register Ports 0 - 3 ($0x614 – 0x617)
Name Description Address Type1Default
TX FIFO MAC
Threshold Port 0
MAC threshold for TX FIFO Port 0. The
default value of 0x1BE represents 446 8-byte
locations. This equates to 3568 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO reaches this threshold, data is forwarded
to the MAC core and line-side interfaces for
onward transmission. By setting the threshold to
an appropriate value, the user can configure the
TX FIFO to operate in a “cut-through” mode
rather than the default “store and forward”
operation mode.
0x614 R/W 0x000001BE
TX FIFO MAC
Threshold Port 1
MAC threshold for TX FIFO Port 1. The
default value of 0x1BE represents 446 8-byte
locations. This equates to 3568 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO reaches this threshold, data is forwarded
to the MAC core and line-side interfaces for
onward transmission. By setting the threshold to
an appropriate value, the user can configure the
TX FIFO to operate in a “cut-through” mode
rather than the default “store and forward”
operation mode.
0x615 R/W 0x000001BE
TX FIFO MAC
Threshold Port 2
MAC threshold for TX FIFO Port 2. The
default value of 0x1BE represents 446 8-byte
locations. This equates to 3568 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO reaches this threshold, data is forwarded
to the MAC core and line-side interfaces for
onward transmission. By setting the threshold to
an appropriate value, the user can configure the
TX FIFO to operate in a “cut-through” mode
rather than the default “store and forward”
operation mode.
0x616 R/W 0x000001BE
TX FIFO MAC
Threshold Port 3
MAC threshold for TX FIFO Port 3. The
default value of 0x1BE represents 446 8-byte
locations. This equates to 3568 bytes of data. A
unit entry in this register equates to 8 bytes of
data. When the amount of data stored in the TX
FIFO reaches this threshold, data is forwarded
to the MAC core and line-side interfaces for
onward transmission. By setting the threshold to
an appropriate value, the user can configure the
TX FIFO to operate in a “cut-through” mode
rather than the default “store and forward”
operation mode.
0x617 R/W 0x000001BE
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 134 TX FIFO Overflow/Underflow/Out of Sequence Event ($0x61E)
Bit Name Description Type1Default
Register Description: TX FIFO Out of Sequence Event:
These register bits provide status information, and indicate if out-of-sequence data has been
received. The bit position equals the port number + 8. These bits are cleared on Read.
0x0
Register Description: TX FIFO Underflow Event:
This register provides a status that a FIFO Empty situation has occurred (for example, a FIFO
under-run). The bit position equals the port number + 4. This register is cleared on Read.
0x0
Register Description: TX FIFO Overflow Event:
This register provides a status that a FIFO full situation has occurred (for example, a FIFO
overflow). The bit position equals the port number. This register is cleared on Read.
0x0
31:12 Reserved Reserved RO 0x00000
11 FOSE3
Port 3
0 = FIFO out of sequence event did not occur
1 = FIFO out of sequence event occurred
R0
10 FOSE2
Port 2
0 = FIFO out of sequence event did not occur
1 = FIFO out of sequence event occurred
R0
9 FOSE1
Port 1
0 = FIFO out of sequence event did not occur
1 = FIFO out of sequence event occurred
R0
8 FOSE0
Port 0
0 = FIFO out of sequence event did not occur
1 = FIFO out of sequence event occurred
R0
7FUE3
Port 3
0 = FIFO underflow event did not occur
1 = FIFO underflow event occurred
R0
6FUE2
Port 2
0 = FIFO underflow event did not occur
1 = FIFO underflow event occurred
R0
5FUE1
Port 1
0 = FIFO underflow event did not occur
1 = FIFO underflow event occurred
R0
4FUE0
Port 0
0 = FIFO underflow event did not occur
1 = FIFO underflow event occurred
R0
3FOE3
Port 3
0 = FIFO overflow event did not occur
1 = FIFO overflow event occurred
R0
2FOE2
Port 2
0 = FIFO overflow event did not occur
1 = FIFO overflow event occurred
R0
1FOE1
Port 1
0 = FIFO overflow event did not occur
1 = FIFO overflow event occurred
R0
0FOE0
Port 0
0 = FIFO overflow event did not occur
1 = FIFO overflow event occurred
R0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 135 Loop RX Data to TX FIFO (Line-Side Loopback) Ports 0 - 3 ($0x61F)
Bit Name Description Type1Default
Register Description: This register enables data received from the line-side receive interface
through the MAC to be sent to the TX FIFO and back to the line-side transmit interface. 0x00000000
31:4 Reserved Reserved RO 0x0000000
3Port 3 Line-Side
Loopback
0 = Disable line-side loopback
1 = Enable line-side loopback R/W 0
2Port 2 Line-Side
Loopback
0 = Disable line-side loopback
1 = Enable line-side loopback R/W 0
1Port 1 Line-Side
Loopback
0 = Disable line-side loopback
1 = Enable line-side loopback R/W 0
0Port 0 Line-Side
Loopback
0 = Disable line-side loopback
1 = Enable line-side loopback R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 136 TX FIFO Port Reset ($0x620)
Bit Name Description Type1Default
Register Description: This is a port reset register for each port in the TX block. Port ID = bit
position in the register. To make the port active, the bit must be set to Low. (For example, reset
of Port 3 implies register value = 1000, setting the bit to 1 asserts the port reset).
0x00000000
31:4 Reserved Reserved RO 0x0000000
3 Port 3 Reset
Port 3
0 = De-assert Reset
1 = Assert Reset
R/W 0
2 Port 2 Reset
Port 2
0 = De-assert Reset
1 = Assert Reset
R/W 0
1 Port 1 Reset
Port 1
0 = De-assert Reset
1 = Assert Reset
R/W 0
0 Port 0 Reset
Port 0
0 = De-assert Reset
1 = Assert Reset
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 137 TX FIFO Overflow Frame Drop Counter Ports 0 - 3 ($0x621 – 0x624)
Name Description Address Type*Default
TX FIFO overflow
frame drop counter
on Port 0
When TX FIFO on Port 0 becomes full or
reset, the number of frames lost or removed
on this port is shown in this register. This
register is cleared on Read.
0x621 R 0x00000000
TX FIFO overflow
frame drop counter
on Port 1
When TX FIFO on Port 1 becomes full or
reset, the number of frames lost or removed
on this port is shown in this register. This
register is cleared on Read.
0x622 R 0x00000000
TX FIFO overflow
frame drop counter
on Port 2
When TX FIFO on Port 2 becomes full or
reset, the number of frames lost or removed
on this port is shown in this register. This
register is cleared on Read.
0x623 R 0x00000000
TX FIFO overflow
frame drop counter
on Port 3
When TX FIFO on Port 3 becomes full or
reset, the number of frames lost or removed
on this port is shown in this register. This
register is cleared on Read.
0x624 R 0x00000000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 138 TX FIFO Errored Frame Drop Counter Ports 0 - 3 ($0x625 – 0x629)
Name Description Address Type*Default
TX FIFO errored
frame drop counter
on Port 0
This register provides the number of packets
dropped by the TX FIFO due to the following:
Data Parity Errors
Short SOPs (two consecutive SOPs for a port
with no EOP)
Small Packets (9-14 bytes)
Frames received that are signaled with TERR
on the SPI3 TX interface.
Note: This register is cleared on Read.
0x625 R 0x00000000
TX FIFO errored
frame drop counter
on Port 1
This register provides the number of packets
dropped by the TX FIFO due to the following:
Data Parity Errors
Short SOPs (two consecutive SOPs for a port
with no EOP)
Small Packets (9-14 bytes)
Frames received that are signaled with TERR
on the SPI3 TX interface.
Note: This register is cleared on Read.
0x626 R 0x00000000
TX FIFO errored
frame drop counter
on Port 2
This register provides the number of packets
dropped by the TX FIFO due to the following:
Data Parity Errors
Short SOPs (two consecutive SOPs for a port
with no EOP)
Small Packets (9-14 bytes)
Frames received that are signaled with TERR
on the SPI3 TX interface.
Note: This register is cleared on Read.
0x627 R 0x00000000
TX FIFO errored
frame drop counter
on Port 3
This register provides the number of packets
dropped by the TX FIFO due to the following:
Data Parity Errors
Short SOPs (two consecutive SOPs for a port
with no EOP)
Small Packets (9-14 bytes)
Frames received that are signaled with TERR
on the SPI3 TX interface.
Note: This register is cleared on Read.
0x628 R 0x00000000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 139 TX FIFO Occupancy Counter for Ports 0 - 3 ($0x62D – 0x630) (Sheet 1 of 2)
Name Description Address Type Default
Occupancy for Tx
FIFO Port 0
This register gives the Occupancy for TX FIFO
Port 0. This is a Read only register 0x62D R 0x00000000
Occupancy for Tx
FIFO Port 1
This register gives the Occupancy for TX FIFO
Port 1. This is a Read only register 0x62E R 0x00000000
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8.4.8 MDIO Register Overview
Table 141 through Table 144 provide an overview of the MDIO registers.
Occupancy for Tx
FIFO Port 2
This register gives the Occupancy for TX FIFO
Port 2. This is a Read only register 0x62F R 0x00000000
Occupancy for Tx
FIFO Port 3
This register gives the Occupancy for TX FIFO
Port 3. This is a Read only register 0x630 R 0x00000000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 139 TX FIFO Occupancy Counter for Ports 0 - 3 ($0x62D – 0x630) (Sheet 2 of 2)
Table 140 TX FIFO Port Drop Enable ($0x63D)
Bit Name Description Type Default
Register Description: Independently enables the individual TX FIFOs to drop erroneous
packets. 0x0000000f
31:4 Reserved Reserved RO 0x000000
3 Port 3 Drop 0 = Disable the TXFIFO from dropping erroneous packets
1 = Enable the TXFIFO to drop erroneous packets R/W 1
2 Port 2 Drop 0 = Disable the TXFIFO from dropping erroneous packets
1 = Enable the TXFIFO to drop erroneous packets R/W 1
1 Port 1 Drop 0 = Disable the TXFIFO from dropping erroneous packets
1 = Enable the TXFIFO to drop erroneous packets R/W 1
0 Port 0 Drop 0 = Disable the TXFIFO from dropping erroneous packets
1 = Enable the TXFIFO to drop erroneous packets R/W 1
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No clear;
R/W/C = Read/Write, Clear on Write
Table 141 MDIO Single Command ($0x680) (Sheet 1 of 2)
Bit Name Description Type1Default
Register Description: Gives the CPU the ability to perform single MDIO read and write
accesses to the external PHY for ports that are configured in copper mode. 0x00010000
31:21 Reserved Reserved RO 00000000000
20 MDIO Command
Performs the MDIO operation. Cleared when
done.
0 = MDIO ready, operation complete
1 = Perform operation
R/W 0
19:18 Reserved Reserved RO 00
17:16 OP Code
MDIO Op Code; two bits identify operation to be
performed:
00 = Reserved
01 = Write operation (as defined in IEEE 802.3,
clause 22.2.4.5)
10 = Read operation (as defined in IEEE 802.3,
clause 22.2.4.5)
11 = Reserved
R/W 01
15:10 Reserved Reserved RO 000000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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9:8 PHY Address Sets bits 1:0 of the external PHY address. Bits 4:2
of the PHY address are fixed at 000. R/W 00
7:5 Reserved Reserved RO 000
4:0 REG Address Five-bit address to one among 32 registers in an
addressed PHY device. R/W 00000
Table 141 MDIO Single Command ($0x680) (Sheet 2 of 2)
Bit Name Description Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 142 MDIO Single Read and Write Data ($0x681)
Bit Name Description Type1Default
Register Description: MDIO read and write data. 0x00000000
31:16 MDIO Read Data MDIO Read data from external device. RO 0x0000
15:0 MDIO Write Data MDIO Write data to external device. R/W 0x0000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 143 Autoscan PHY Address Enable ($0x682)
Bit Name Description Type1Default
Register Description: Defines valid PHY addresses. Each bit enables the corresponding
PHY address.
0 = Disable the PHY address
1 = Enable the PHY address
Note: Autoscan is only applicable for the ports in copper mode.
0x00000000
31:4 Reserved Reserved RO 0x0000000
3:0 Autoscan PHY
Address
Autoscan PHY address enable
0 = Disable address
1 = Enable address
R/W 1111
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 144 MDIO Control ($0x683) (Sheet 1 of 2)
Bit Name Description Type1Default
Register Description: Miscellaneous control bits. 0x00000000
31:4 Reserved Reserved RO 0x000
3 MDIO in Progress
MDIO progress. This bit reflects the status of
MDIO transaction
0 = MDIO Single command not in progress
1 = MDIO Single Command in progress
RO 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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8.4.9 SPI3 Register Overview
Table 145 through Table 147, Address Parity Error Packet Drop Counter ($0x70A), on
page 208 provide an overview of the SPI3 registers.
2MDIO in Progress
Enable
Enables the MDIO in progress bit
0 = Disable MDIO in progress register bit
1 = Enable MDIO in progress register bit
R/W 0
1 Autoscan Enable
Autoscan enable
0 = Disable Autoscan
1 = Enable Autoscan
R/W 0
0 MDC Speed
MDC speed
0 = MDC runs at 2.5 MHz
1 = MDC runs at 18 MHz
R/W 0
Table 144 MDIO Control ($0x683) (Sheet 2 of 2)
Bit Name Description Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 145 SPI3 Transmit and Global Configuration ($0x700) (Sheet 1 of 3)
Bit Name Description Type1Default
Register Description: This register gives the configuration related to the SPI3 Transmitter
and Global configuration (4 x 8 mode). 0x00200000
31:24 Reserved Reserved RO 0x00
23 SPI3 Transmitter Soft
Reset 1 = The SPI3 TX block is reset. R/W 0
22 SPI3 Receiver Soft
Reset 1 = The SPI3 RX block is reset. R/W 0
21 SPHY/MPHY Mode
0 = Indicates that SPI3 block operates in 32-bit
MPHY mode.
1 = Indicates that the SPI3 block operates in 4 x 8
SPHY mode.
This configuration affects both the SPI3 transmitter
and receiver functionality.
R/W 1
20 Tx_ad_prtyer_drop
Indicates whether to drop packets received with
parity error during the address selection phase
(Tsx and nTenb High) should be dropped.
0 = Do not drop packets with address parity error
1 = Drop packets with address parity error
This is applicable only in MPHY mode of
operation. This bit is ignored in SPHY (4 x 8) mode
as there will be no address selection.
R/W 0
19 Dat_prtyer_drp Port 3
SPHY/MPHY Mode:
Indicates whether to drop packets with data parity
error for port 3.
0 = Do not drop packets with data parity error
(default)
1 = Drop packets with data parity error
R/W 0x0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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18 Dat_prtyer_drp Port 2
SPHY/MPHY Mode:
Indicates whether to drop packets with data parity
error for port 2.
0 = Do not drop packets with data parity error
(default)
1 = Drop packets with data parity error
R/W 0
17 Dat_prtyer_drp Port 1
SPHY/MPHY Mode:
Indicates whether to drop packets with data parity
error for port 1.
0 = Do not drop packets with data parity error
(default)
1 = Drop packets with data parity error
R/W 0
16 Dat_prtyer_drp Port 0
SPHY/MPHY Mode:
Indicates whether to drop packets with data parity
error for port 0.
0 = Do not drop packets with data parity error
(default)
1 = Drop packets with data parity error
R/W 0
15:8 Reserved Write as 0, ignore on Read. R/W 00000000
7 Tx_parity_sense Port 3
SPHY Mode:
Indicates the parity sense to check the parity on
TDAT bus for port 3.
0 = Odd Parity
1 = Even Parity
MPHY Mode:
NA
R/W 0
6 Tx_parity_sense Port 2
SPHY Mode:
Indicates the parity sense to check the parity on
TDAT bus for port 2.
0 = Odd Parity
1 = Even Parity
MPHY Mode:
NA
R/W 0
5 Tx_parity_sense Port 1
SPHY Mode:
Indicates the parity sense to check the parity on
TDAT bus for port 1.
0 = Odd Parity
1 = Even Parity
MPHY Mode:
NA
R/W 0
4 Tx_parity_sense Port 0
SPHY Mode:
Indicates the parity sense to check the parity on
TDAT bus for port 0.
0 = Odd Parity
1 = Even Parity
MPHY Mode:
Indicates the parity sense to check the parity on
TDAT bus for all ports.
0 = Odd Parity
1 = Even Parity
R/W 0
Table 145 SPI3 Transmit and Global Configuration ($0x700) (Sheet 2 of 3)
Bit Name Description Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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3 Tx_port_enable Port 3
SPHY Mode:
0 = Disables the selected SPI3TX port 3.
1 = Enables the selected SPI3 TX port 3.
MPHY Mode:
0 = Disables the selected SPI3 TX port 3.
1 = Enables the selected SPI3 TX port 3.
R/W 1
2 Tx_port_enable Port 2
SPHY Mode:
0 = Disables the selected SPI3 TX port 2
1 = Enables the selected SPI3 TX port 2
MPHY Mode:
0 = Disables the selected SPI3 TX port 2
1 = Enables the selected SPI3 TX port 2
R/W 1
1 Tx_port_enable Port 1
SPHY Mode:
0 = Disables the selected SPI3 TX port 1
1 = Enables the selected SPI3 TX port 1
MPHY Mode:
0 = Disables the selected SPI3 TX port 1
1 = Enables the selected SPI3 TX port 1
R/W 1
0 Tx_port_enable Port 0
SPHY Mode:
0 = Disables the selected SPI3 TX port 0
1 = Enables the selected SPI3 TX port 0
MPHY Mode:
0 = Disables the selected SPI3 TX port 0
1 = Enables the selected SPI3 TX port 0
R/W 1
Table 145 SPI3 Transmit and Global Configuration ($0x700) (Sheet 3 of 3)
Bit Name Description Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 146 SPI3 Receive Configuration ($0x701) (Sheet 1 of 4)
Bit Name Description Type1Default
Register Description: This register gives the configuration related to the SPI3 receiver. 0x00000F80
31:28 Reserved Reserved RO 0x0
27 B2B_PAUSE Port 3
SPHY Mode:
Indicates the number of pause cycles to be
introduced between back-to-back transfers for
port 3.
0 = Zero pause cycles
1 = Two pause cycles
MPHY Mode:
NA
R/W 0
26 B2B_PAUSE Port 2
SPHY Mode:
Indicates the number of pause cycles to be
introduced between back-to-back transfers for
port 2.
0 = Zero pause cycles
1 = Two pause cycles
MPHY Mode:
NA
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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25 B2B_PAUSE Port 1
SPHY Mode:
Indicates the number of pause cycles to be
introduced between back-to-back transfers for
port 1.
0 = Zero pause cycles
1 = Two pause cycles
MPHY Mode:
NA
R/W 0
24 B2B_PAUSE Port 0
SPHY Mode:
Indicates the number of pause cycles to be
introduced between back-to-back transfers for
port 0.
0 = Zero pause cycles
1 = Two pause cycles
MPHY Mode:
Indicates the number of pause cycles to be
introduced between back-to-back transfers for all
ports.
0 = Zero pause cycles
1 = Two pause cycles
R/W 0
23:22 RX_BURST Port 3
SPHY Mode:
NA
MPHY Mode:
NA
R/W 0x0
21:20 RX_BURST Port 2
SPHY Mode:
NA
MPHY Mode:
NA
R/W 0x0
19:18 RX_BURST Port 1
SPHY Mode:
NA
MPHY Mode:
NA
R/W 0x0
17:16 RX_BURST Port 0
SPHY Mode:
NA
MPHY Mode:
Selects the maximum burst size on the RX path
for all ports.
0x = 64 bytes maximum burst size
10 = 128 bytes maximum burst size
11 = 256 bytes maximum burst size
R/W 0x0
15 Rx_parity_sense Port 3
SPHY Mode:
Indicates the parity sense to check the parity on
RDAT bus for port 3.
0 = Odd Parity
1 = Even Parity
MPHY Mode:
NA
R/W 0x0
Table 146 SPI3 Receive Configuration ($0x701) (Continued) (Sheet 2 of 4)
Bit Name Description Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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14 Rx_parity_sense Port 2
SPHY Mode:
Indicates the parity sense to check the parity on
RDAT bus for port 2.
0 = Odd Parity
1 = Even Parity
MPHY Mode:
NA
R/W 0x0
13 Rx_parity_sense Port 1
SPHY Mode:
Indicates the parity sense to check the parity on
RDAT bus for port 1.
0 = Odd Parity
1 = Even Parity
MPHY Mode:
NA
R/W 0x0
12 Rx_parity_sense Port 0
SPHY Mode:
Indicates the parity sense to check the parity on
RDAT bus for port 0.
0 = Odd Parity
1 = Even Parity
MPHY Mode:
Indicates the parity sense to check the parity on
RDAT bus for all ports.
0 = Odd Parity
1 = Even Parity
R/W 0x0
11 Rx_port_enable
Port 3
SPHY Mode:
0 = Disables the selected SPI3 RX port.
1 = Enables the selected SPI3 RX port.
MPHY Mode:
0 = Disables the selected SPI3 RX port.
1 = Enables the selected SPI3 RX port.
R/W 0x1
10 Rx_port_enable
Port 2
SPHY Mode:
0 = Disables the selected SPI3 RX port.
1 = Enables the selected SPI3 RX port.
MPHY Mode:
0 = Disables the selected SPI3 RX port.
1 = Enables the selected SPI3 RX port.
R/W 0x1
9Rx_port_enable
Port 1
SPHY Mode:
0 = Disables the selected SPI3 RX port.
1 = Enables the selected SPI3 RX port.
MPHY Mode:
0 = Disables the selected SPI3 RX port.
1 = Enables the selected SPI3 RX port.
R/W 0x1
8Rx_port_enable
Port 0
SPHY Mode:
0 = Disables the selected SPI3 RX port.
1 = Enables the selected SPI3 RX port.
MPHY Mode:
0 = Disables the selected SPI3 RX port.
1 = Enables the selected SPI3 RX port.
R/W 0x1
Table 146 SPI3 Receive Configuration ($0x701) (Continued) (Sheet 3 of 4)
Bit Name Description Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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8.4.10 SerDes Register Overview
Table 148 through Table 151, Clock and Interface Mode Change Enable Ports 0 - 3
($0x794), on page 210 define the contents of the SerDes registers at base location 0x780,
which contain the control and status for the four SerDes interfaces on the IXF1104 MAC.
7 Rx_core_enable
SPHY Mode:
NA. Write as 1, ignore on Read.
MPHY Mode:
0 = Disables the RX SPI3 core.
1 = Enables the RX SPI3 core.
R/W 0x1
6:1 IBA[5:0]
SPHY Mode:
NA. Write as 0, ignore on Read.
MPHY Mode:
Sets the 6-bit value appended to the 2-bit
address during the port address selection.
R/W 0x00
0 RERR_enable
SPHY Mode/MPHY Mode:
Frames marked to be filtered (based on the
settings in RX FIFO Errored Frame Drop Enable
($0x59F) can be optionally indicated with an
RERR when sent out the SPI3 interface.
0 = Packets not indicated with RERR.
1 = Packets indicated with RERR.
R/W 0
Table 146 SPI3 Receive Configuration ($0x701) (Continued) (Sheet 4 of 4)
Bit Name Description Type1Default
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 147 Address Parity Error Packet Drop Counter ($0x70A)
Bit Name Description Type1Default
Register Description: This register counts the number of packets dropped due to parity error
detection during the address selection cycle. 0x00000000
31:8 Reserved Reserved RO 0x000000
7:0 Address Parity Error
Packet Drop Counter
This is an 8-bit counter that counts the number of
packets dropped due to parity error detection
during the address selection cycle. This gets
cleared when read and saturates at 8’hFF. There
is only one counter for address parity drop as
address will be used only in MPHY mode of
operation. The counter gets cleared once the
register is read.
R0x00
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 148 TX Driver Power Level Ports 0 - 3 ($0x784) (Sheet 1 of 2)
Bit Name Description Type Default
Register Description: Allows selection of various programmable drive strengths on each
SerDes port. Refer to Section 5.6.2.2, Transmitter Programmable Driver-Power Levels, on
page 100.
0x0000dddd
31:16 Reserved Reserved RO 0x0000
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15:12 DRVPWR3[3:0] Encoded input that sets Power Level for Port 3 R/W 1101
11:8 DRVPWR2[3:0] Encoded input that sets Power Level for Port 2 R/W 1101
7:4 DRVPWR1[3:0] Encoded input that sets Power Level for Port 1 R/W 1101
3:0 DRVPWR0[3:0] Encoded input that sets Power Level for Port 0 R/W 1101
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 148 TX Driver Power Level Ports 0 - 3 ($0x784) (Sheet 2 of 2)
Table 149 TX and RX Power-Down ($0x787)
Bit Name Description Type Default
Register Description: TX and RX power-down bits to allow per-port power-down of unused
ports 0x00000000
31:14 Reserved Reserved RO 0x0000000
13:10 TPWRDWN[3:0] TX power-down for Ports 3-0 (1 = Power-down) R/W 0000
9:4 Reserved Reserved RO 0x00
3:0 RPWRDWN[3:0] RX Power-down for Ports 3-0 (1 = Power-down) R/W 0000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 150 RX Signal Detect Level Ports 0 - 3 ($0x793)
Bit Name Description Type1Default
Register Description: This register shows the status of the Rx input in relation to the level of
the signal being received from the line. This register is meant for debug and test use. 0x00000000
31:4 Reserved Reserved RO 0x0000000
3:0 SIGDET[3:0]
Signal Detect for Ports 0-3
0 = Noise
1 = Signal
RO 0x0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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8.4.11 Optical Module Register Overview
Table 152 through Table 155, I2C Data Ports 0 - 3 ($0x79F), on page 212 provide an
overview of the Optical Module Registers.
Note: All registers in this section are only applicable to ports that are configured in fiber mode.
Table 151 Clock and Interface Mode Change Enable Ports 0 - 3 ($0x794)
Bit Name Description Type1Default
Register Description: This register is used when a change to the operational mode or speed
of the IXF1104 MAC is required. This register ensures that when a change is made that the
internal clocking of the IXF1104 MAC is managed correctly and no unexpected effects of the
operational or speed change are observable on the line interfaces.
0x00000000
31:4 Reserved Reserved RO 0x0000000
3
Clock and Interface
Mode Change Enable
Port 32
Enables internal clock generator for Port 3 to
sample the MAC IF Mode and RGMII Speed ($
Port_Index + 0x10) and the Interface Mode
($0x501).
0 = Set to zero when changes are being made to
the MAC IF Mode and RGMII Speed ($
Port_Index + 0x10) and the Interface Mode
($0x501).
1 = Set to 1 for the configuration changes to take
effect.
R/W 0
2
Clock and Interface
Mode Change Enable
Port 22
Enables internal clock generator for Port 2 to
sample the MAC IF Mode and RGMII Speed ($
Port_Index + 0x10) and the Interface Mode
($0x501).
0 = Set to zero when changes are being made to
the MAC IF Mode and RGMII Speed ($
Port_Index + 0x10) and the Interface Mode
($0x501).
1 = Set to 1 for the configuration changes to take
effect.
R/W 0
1
Clock and Interface
Mode Change Enable
Port 12
Enables internal clock generator for Port 1 to
sample the MAC IF Mode and RGMII Speed ($
Port_Index + 0x10) and the Interface Mode
($0x501).
0 = Set to zero when changes are being made to
the MAC IF Mode and RGMII Speed ($
Port_Index + 0x10) and the Interface Mode
($0x501).
1 = Set to 1 for the configuration changes to take
effect.
R/W 0
0
Clock and Interface
Mode Change Enable
Port 02
Enables internal clock generator for Port 0 to
sample the MAC IF Mode and RGMII Speed ($
Port_Index + 0x10) and the Interface Mode
($0x501).
0 = Set to zero when changes are being made to
the MAC IF Mode and RGMII Speed ($
Port_Index + 0x10) and the Interface Mode
($0x501).
1 = Set to 1 for the configuration changes to take
effect.
R/W 0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
2. Refer to Section 6.1, Change Port Mode Initialization Sequence, on page 124 for the proper sequence to
change the port mode and speed in conjunction with this register.
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Table 152 Optical Module Status Ports 0-3 ($0x799)
Bit Name Description Type1Default
Register Description: This register provides a means to control and monitor the interface to
the optical modules when a port is used in fiber mode. 0x00000000
31:24 Reserved Reserved RO 0x00
23:20 Rx_LOS_3:0 Rx_LOS inputs for Ports 0-3 R 0x0
19:14 Reserved Reserved 0X00
13:10 Tx_FAULT_3:0 Tx_FAULT inputs for Ports 0-3 R 0x0
9:4 Reserved Reserved 0X00
3:0 MOD_DEF_3:0 MOD_DEF inputs for Ports 0-3 R 0x0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 153 Optical Module Control Ports 0 - 3 ($0x79A)
Bit Name Description Type1Default
Register Description: This register provides access to optical module interrupt enables and
sets the TX_DISABLE output for the ports configured in fiber mode. 0x1E000
31:17 Reserved Reserved RO 0x0000
16:13 I2C_port_enable When set, individually enables the four I2C ports. R/W 0xF
12 RX_LOS_EN Enable for RX_LOS_INT operation
1 = Enabled R/W 0
11 TX_FAULT_EN Enable for TX_FAULT_INT operation
1 = Enabled R/W 0
10 MOD_DEF_EN Enable for MOD_DEF_INT operation
1 = Enabled R/W 0
9:4 Reserved Reserved RO 0X00
3:0 TX_DISABLE_3:0 Tx_DISABLE outputs for Ports 0-3 R/W 0x0
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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Table 154 I2C Control Ports 0 - 3 ($0x79B)
Bit Name Description Type1Default
Register Description: This register controls and monitors the interface to the optical modules
when used in fiber mode. 0x00000000
31:29 Reserved Reserved RO 0x0
28 Port address Err (R) Port addressing error. R 0
27 wp_err An attempt to write to the protected E2PROM has
occurred. R0
26 no_ack_err
This bit is set to 1 when a write and subsequent
read from an Optical Module Interface has failed.
Use this signal to validate the data being read.
Data is only valid if this bit is equal to zero.
R0
25 I2C_enable Enable the I2C block. R/W 0
24 I2C_start Start the I2C transfer. R/W 0
23 Reserved Reserved RO 0
22 write_complete Bit is asserted when write access is complete. R 0
21 Reserved Reserved RO 0
20 Read_complete Bit asserted when read access is complete. R 0
19:18 Reserved Reserved RO 0
17:16 Port Select Selects the port for which the I2C transaction is
targeted. Valid range is 0 to 3. R/W 00
15 Read/Write 0 = Write transaction
1 = Read transaction R/W 0
14:11 Device ID Most-significant four bits of device address field. R/W 0x0
10:0 Register Address
Bits 10:8 select the least-significant three bits of
the device address field
Bits 7:0 select the word/register address
R/W 0x000
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 155 I2C Data Ports 0 - 3 ($0x79F)
Bit Name Description Type1Default
Register Description: These registers hold data bytes that are read and written using the I2C
interface to Optical Module Interfaces connected to each port of the IXF1104 4-Port Gigabit
Ethernet Media Access Controller.
0x00000000
31:24 Reserved Reserved RO 0x00
23:16 Write Data Bit 23=MSB, Bit 16 = LSB
Data to be written to the Optical Module Interface. R/W 0X00
15:8 Reserved Reserved RO 0x00
7:0 Read Data Bit 7 = MSB, Bit 0 = LSB
Data read from the Optical Module Interface. R/W 0X00
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
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9.0 Mechanical Specifications
The IXF1104 MAC is packaged in a 576-ball BGA package with 6 balls removed diagonally
from each corner, for a total of 552 balls used measuring 25 mm x 25 mm. The pitch of the
package balls is 1 mm.
9.1 Overview
CBGA (standard and RoHS-compliant) and FC-PBGA packages are suited for applications
requiring high I/O counts and high electrical performance, and are recommended for high-
power applications with high noise immunity requirements.
9.1.1 Features
• Flip chip die attach; surface mount second-level interconnect
• High electrical performance
• High I/O counts
• Area array I/O options
• Multiple power-zone offering supports core and four additional voltages
• JEDEC-compliant package
9.2 Package Specifics
The IXF1104 MAC uses the following package:
• 576-ball BGA package with 6 balls removed diagonally from each corner, for a total of
552 balls used
• Ball pitch of 1.0 mm
• Overall package dimensions of 25 mm x 25 mm
9.3 Package Information
Note: Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller ordering
information can be found at www.cortina-systems.com.
Table 156 Package Description
Product Name Package Substrate
Thickness Solder Ball Diameter
IXF1104 Leaded 552 CBGA Leaded 2.48 max, 2.02 min 0.8 +/- .04 mm
IXF1104 RoHS 552 CBGA RoHS 2.48 max, 2.02 min 0.7 +/- 0.1 mm
IXF1104 Leaded 552 FC-PBGA Leaded 1.34 max, 1.09 min 0.6 +/- 0.1 mm
IXF1104 RoHS 552 FC-PBGA RoHS 1.34 max, 1.09 min 0.6 +/- 0.1 mm
Page 214Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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9.3.1 CBGA Package Diagrams
Figure 55 and Figure 56 illustrate the CBGA top, side, and bottom package views and Table
156 on page 213 lists the FC-PBGA mechanical specifications.
Figure 55 CBGA Package Diagram (Top and Side View)
Seating Plane
0.15 C
(4.237 Max)
(3.619 Min)
(3.327 Max)
(2.809 Min)
(0.857 Max)
(0.779 Min)
(2.47 Max)
(2.03 Min)
0.81 ± 0.1
Chip
C4 Encapsulant
Fillet
45L4867 (552)
Solder ball
Note: All dimensions are in mm.
Terminal A01
Identifier
aaa (0.20)
25.0 Nom ± 0.2
25.0 Nom ± 0.2
All around
Page 215Cortina Systems®IXF1104 4-Port Gigabit Ethernet Media Access Controller
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Figure 56 CBGA Package Diagram (Bottom View)
B0035-03
(25 ± 0.2)
(23)
(25 ± 0.2)
(23)
(23x) TYP
Chip Carrier
A01 Corner
(23x) TYP
(0.825 MAX)
(0.325 MIN)
(Reference)
(0.825 MAX)
(0.325 MIN)
(575X) (ø
0.8 ± 0.05)
(I/O Pads)
(Reference)
ø
0.20
DA
L S BS
Note: All dimensions are in mm.
= Ball
= No ball
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9.3.2 Plastic Ball Grid Array Package Diagram
Figure 57 and Figure 58 illustrate the FC-PBGA top, side, and bottom package views and
Table 156 on page 213 lists the FC-PBGA mechanical specifications.
Note: Please contact your field sales representative for more information on the FC-PBGA
package.
Figure 57 FC-PBGA Package Diagram (Top and Side View)
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Figure 58 FC-PBGA Package Diagram (Bottom View)
