Order Number: 280049, Revision: 007
20-September-2006
Notice: This document contains preliminary information on new products in production. The
specifications are subject to change without notice. Verify with your local Intel sales office that
you have the latest datasheet before finalizing a design.
Intel® TXN31111 Tri-rate 850 nm Optical
Transceiver - SFP* MSA Compatible
Datasheet
The LC Small Form Factor Pluggable (SFP) optical transceivers are high-performance
integrated modules for bi-directional commun ication over multimode optical fiber.
The Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver (called hereafter the
TXN31111 Optical Transceiver) is specifically designed for high-speed multi-rate operation.
The TXN31111 Optical Transceiver is provided with an LC receptacle that is compatible with
the industry-standard LC connector.
The TXN31111 Optical Transceiver has an LC receptacle compatible with the industry-standard
LC connector. The TXN311 11 Optical Transceiver is a Class 1 Laser product that complies with
FDA Radiation Performance Standards, 21 CFR Subchapt er J and international standards IEC
60825-1 and IEC 60825-2.
Product Features
Applications
nCompliant with 1x and 2x Fibre Channel
(1.0625/2.125 Gbps) FC-PI standard
nCompliant with 1.25 Gbps IEEE 802.3z
Ethernet standard
nCompliant with the SFP MSA specification
nHot pluggable
n850 nm VCSEL emitter
nTTL Loss of Signal (LOS) Output
nTransmitter Disable Input
nAC-coupled CML level Input/Output
nSingle +3.3 V Power Supply
nClass 1 Laser Product
nIEC/UL 60950-1 Safety Certified
nDesigned and verified as RoHS compliant
nFibre Channel Switches
nEthernet Stackable Switches nEthernet Enterprise Switches
20-September-2006 Datasheet
Intel® TXN31111 Tri-rate 850 nm Optical Transceiver - SFP* MSA Compatible
2 Order Number: 280049, Revision: 007
Legal Lines and Disclaimers
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY
ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN
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RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY P ATENT, COPYRIGHT OR OTHER
INTELLECTUAL PROPER TY RIGHT. Intel product s are not intended for use in medical, life saving, life sust aining, critical control or safety systems, or
in nuclear facility applications.
Intel may make changes to specifications and product descriptions at any time, without notice.
Intel Corporation may have pa tents or pending patent applications, trademarks, copyrights, or other intellectual property rig hts that relate to the
presented subject matter. The furnishing of documents and other materials and information does not pro vide any license, express or implied, by
estoppel or otherwise, to any su ch patents, trademarks, copyrights, or other intellectual property rights.
The TXN31111 Optical Transceiver may contain design defects or errors known as errata which may cause the product to deviate from published
specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an order number and are referenced in this document, or other In tel literature may be obtained by calling
1-800-548-4725 or by visiting Intel's website at http://www.intel.com.
Intel and the Intel logo are trademarks or registe red trademarks of Intel Corporation or its subsidia ries in the United States and other countries.
*Other names and brands may be claimed as the property of othe rs.
Copyright © 2006, Intel Corporation. All Rights Reserved.
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-September-2006
Intel® TXN31111 Tri-rate 850 nm Optical Transceiver - SFP* MSA Compatible
Order Number: 280049, Revision: 007 3
Contents
1.0 Introduction....................................................................................................................................6
2.0 Specifications ................................................................................................................................7
2.1 Maximum Ratings and Recommended Operating Conditions..............................................7
2.2 Specifications – Electric al............... ... ................. ... ... ... .... ... ................ ... ... .... ... ... ... ...............9
2.3 Specifications – Optical ............... ... ... .... ................ ... ... .... ... ... ... ... ................. ... ... ... ... .... ... ...10
3.0 Electrical Interface.......................................................................................................................12
4.0 Termination..................................................................................................................................14
4.1 Types of I/O Interfaces ................ ... ... .... ... ................ ... .... ... ... ... ... .... ................ ... ... ... .... ... ...14
4.2 CML Termination ............... .... ... ... ................ ... .... ... ... ... .... ... ................ ... ... .... ... ... ... ... ..........15
5.0 SFP Timing Parameters ..............................................................................................................17
6.0 Serial Identification .....................................................................................................................18
6.1 Identifier..............................................................................................................................20
6.2 Connector ...........................................................................................................................21
6.3 Encoding.............................................................................................................................21
6.4 Transceiver.........................................................................................................................22
7.0 Mechanical Specification............................................................................................................25
8.0 Regulatory Compliance ..............................................................................................................26
8.1 Electromagnetic Compatibility Compliance ........................................................................26
8.2 Safety Compliance..............................................................................................................27
8.3 Lead-Free Conformance.... .... ... ... ... ... .... ... ... ... ................. ... ... ... ... .... ... ... ... .... ... ................ ...28
8.4 Compliance with Restriction of Hazardous Substances .....................................................28
8.5 Product Certification Markings and Compliance Statements..............................................29
9.0 Ordering Information...................................................................................................................30
10.0 Acronyms.....................................................................................................................................31
Figures
1 Diagram of Host Board Connector Block Pin Numbers and Names...........................................12
2 Circuit Diagram for CML Termination on Receiver Output.........................................................15
3 Circuit Diagram for CML Termination on Transmitter Input........................................................16
4 SFP Mechanical Specifications ..................................................................................................25
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-September-2006 Datasheet
Intel® TXN31111 Tri-rate 850 nm Optical Transceiver - SFP* MSA Compatible
4 Order Number: 280049, Revision: 007
Tables
1 Absolute Maximum Ratings..........................................................................................................7
2 Recommended Operating Conditions ................. ... ... .... ... ... ... .... ... ... ... ... .... ... ... ... .... ... ... ... ... .... .....7
3 Electrical Characteristics ........ ... ... .... ... ... ... ... ................................................................................8
4 Transmitter – Electrical Specifications..........................................................................................9
5 Receiver – Electrical Specifications..............................................................................................9
6 Fiber Length Specifications .............. ... ................ ... ... .... ... ... ... .... ... ... ... ... .... ... ... ... ................ .......10
7 Optical Specifications – Transmitter...........................................................................................10
8 Receiver – Optical Specifications...............................................................................................11
9 Plug Sequence: Pin Engagement Sequence During Hot Plugging ............................................12
10 Timing Parameters for SFP Management..................................................................................17
11 Serial Identification Field Descriptions........................................................................................18
12 Identifier Values..........................................................................................................................20
13 Connector Values................ ... ... ... .... ................ ... ... ... .... ... ... ... .... ... ... ... ................ .... ... ... .............21
14 Encoding Codes.................. ... ... ... .... ... ................ ... ... .... ... ... ... .... ... ................ ... ... .... ... ... .............21
15 Transceiver Codes .....................................................................................................................22
16 Option Values.............................................................................................................................23
17 Date Code ..................................................................................................................................24
18 Electromagnetic Compatibility Compliance ...............................................................................26
19 Safety Compliance .....................................................................................................................27
20 Lead-F re e 2nd-Level Interconnect Markings...............................................................................28
21 Product Certification Markings and Compliance Statements .....................................................29
22 Ordering Information...................................................................................................................30
23 Acronyms....................................................................................................................................31
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-September-2006
Intel® TXN31111 Tri-rate 850 nm Optical Transceiver - SFP* MSA Compatible
Order Number: 280049, Revision: 007 5
Revision History
Date Revision Description
20-Sept-2006 007
Title page change
Added standard references on Table 1.0 “Introduction” on page 6
Modified Table 3 “Electrical Characteristics” on page 8
Modified Table 5 “Receiver – Electrical Specifications” on page 9
Modified Table 6 “Fiber Length Specifications” on page 10
Modified Table 7 “Optical Specifications – Transmitter” on page 10
Modified Table 6 “Fiber Length Specifications” on page 10
24-May- 2006 006 Title change
Table 7 “Optical Specifications – Transmitter” on page 10 -Corrected document-only error - Output
Rise/Fall Time.
25-Aug-2005 005
• Modified Title Page:
• Modified datasheet description on Page 1
• Rearranged the Product Features and Applications sections on Page 1.
• Added first paragraph under Section 2.0, “Specifications” on page 7.
• Modified Table 1 “Absolute Maximum Ratings” on page 7:
Removed Operating Temperature and Note 1.
Added Caution note.
• Modified Table 5 “Receiver – Electrical Specifications” on page 9: Added total jitter TJ
parameter.
• Modified Table 8 “Receiver – Optical Specifications” on page 11: Added "Stressed Sensitivity
Compliant with Fibre Channel – Physical Interfaces (FC-PI-2) specs, IEEE 802.3z* Gigabit
Ethernet 1000 BASE-SX standard."
• Modified Section 7.0, “Mechanical Specification” on page 25: Added “Note: Aqueous wash is
not applicable for this product.”
• Modified Table 21 “Product Certification Markings and Compliance Statements” on page 29:
Modified Electromagnetic Interference (EMI) Performance to: “Module meets FCC class B.
System margins depend on the PCB layout of customer board and chassis designs.
14 Jan 2005 004 Modified Table 3 “Electrical Characteristics” on page 8: added Power Dissipation values.
17 Nov 2004 003 Replaced Figure 4 “SFP Mechanical Specifications” with a corrected drawing.
17 Aug 2004 002
Updated the Transmitter Values for Max Field:
–Single Ended, was 1100
–Differential, was 2200
–Output rise/fall time, was 115
Updated the Receiver Values:
–Max:Total Jitter row was TBD
–Min:Receiver Sensitivity was -22, -20, LOS - Asserted was -30, LOS - Hysteresis not defined
–Typ:Receiver Sensitivity was -19, -17
29 Jun 2004 001 Initial document release
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
6 Order Number: 280049, Revision: 006
1.0 Introduction
The Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver (called hereafter the TXN31111
Optical Transceiver) is specifically designed fo r high-speed data links at 2.125 Gbps (2x Fibre
Channel rate).
This document discusses the following TXN31111 Optical Transceiver topics:
•Section 2.0, “Specifications” on page 7
•Section 3.0, “Electrical Interface” on page 12
•Section 4.0, “Termination” on page 14
•Section 5.0, “SFP Timi ng Parameters” on page 17
•Section 6.0, “Serial Identification” on page 18
•Section 7.0, “Mechanical Specification” on page 25
•Section 8.0, “Regulatory Compliance” on page 26
•Section 9.0, “Ordering Information” on page 30
•Section 10.0, “Acronyms” on page 31
For information on standards that apply to the TXN31111 Optical Transceiver, see the following
references:
•IEEE Std 802.3, 2002 Edition, Clause 38, PMD Type 1000BASE-SX. IEEE Standards
Department, 2002
•IEEE Std 802.3z, 1998 Edition. Gigabit Interface Converter (GBIC) Ethernet Standard.
•Small Form-Factor Pluggabl e (SFP) Transceiver Multisource Agreement (MSA)
•Telcordia Technologies* GR-63 Section 4.2
•
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 7
2.0 Specifications
Specifications include the following:
•Section 2.1, “Maximum Ratings and Recommended Op erating Conditions” on page 7
•Section 2.2, “Specifications – Electrical” on page 9
•Section 2.3, “Specifications – Optical” on page 10
2.1 Maximum Ratings and Recommended Operating
Conditions
Table 1 lists the absolute maximum ratings for the TXN31111 Optical Transceiver.
Table 2 lists the recommended operating conditions. (Minim um and maximum values listed in
Table 3 through Table 8 apply over the recom men ded operating conditions specified in Table 2.)
Table 1. Absolute Maximum Ratings
Parameter Symbol Min. Max. Unit Notes
Storage Temperature TS-40 85 °C–
Relative Humidity RH595%–
Module Supply Voltage VCCT, R -0.5 4 V –
Data AC Voltage TD+, TD- – 2.6 VPP Differential
Control Input Voltage VI-0.5 VCC + 0.3 V –
Caution: Exceeding these values may cause permanent damage. Functional operation
under these conditions is not implied. Exposure to maximum rating conditions
for extended periods may affect device reliability.
Table 2. Recommended Operating Conditions
Parameter Symbol Min. Typ. Max. Unit
Case Temperature TC-20 – 85 °C
Module Supply Voltage VCCT, R 2.97 3.3 3.63 VDC
Data Rate –1.0625 – 2.5 Gbps
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
8 Order Number: 280049, Revision: 006
Table 3 lists the TXN31111 Optical Transceiver electrical characteristics.
Table 3. Electrical Characteristics
Parameter Symbol Min. Typ. Max. Units Notes
Supply Current ICC – 150 180 mA TC = 25 °C, VCC = 3.3 V
ICC ––200mA-20° C < TC < 85° C,
2.97 V < VCC < 3.63 V
Power Dissipation Pdiss – 500 726 mW -20° C < TC < 85° C,
2.97 V < Vcc < 3.63 V
Supply Noise Rejection – 100 – – mV 10 kHz to 4 MHz with
supply filter
Inrush Current
–––30mA
Hot plugging of the
TXN3111101 Optical
Transceiver results in
the inrush current of no
more than 30 mA
greater than the steady
state value.
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 9
2.2 Specifications – Electrical
Table 4 lists the TXN31111 Optical Transceiver transmitter electrical specifications.
Table 5 lists the TXN31111 Optical Transceiver receiver electrical specifications.
Table 4. Transmitter – Electrical Specifications
Parameter Symbol Min. Typ. Max. Units Notes
CML Input (Single Ended) – 200 – 1000 mVpp AC Coupled Input
CML Input (Differential) –400 – 2000 mVpp Peak to Peak Voltage
Input Impedance
(differential) ZIN 85 100 115 Ω–
TX_DISABLE input
voltage - High VIH 2–V
CC+0.3 V –
TX_DISABLE input
voltage - Low VIL 0–0.8V –
TX_Fault Output V oltage -
High VOH 2.0 – VCC + 0.3 V IOH = 40μA, 1 TTL Unit
Load
TX_Fault Output V oltage -
Low VOL 0–0.8V
IOH = -1.69 mA, 1 TTL
Unit Load
Table 5. Receiver – Electrical Specifications
Parameter Symbol Min. Typ. Max. Units Notes
CML Output (Single Ended) – 275 350 600 mVpp AC Couple Ou tlets
CML Output (Differential) – 550 700 1200 mVpp Peak to Peak Voltage
CML Output (Rise/Fall Time) – – – 150 ps 20% - 80%
Output Impedance
(Differential) ZOUT 85 100 115 Ω–
TTL LOS Output - Low VIL 0–0.8 V
IOH = -1.69 mA, 1 TTL
Unit Load
TTL LOS Output - High VOH 2.0 – VCC +
0.3 VIOH = 40μA, 1 TTL Unit
Load
Deterministic Jitter DJ – – 47 ps
Total Jitter TJ ––132ps –
MOD_DEF ( 0-2)
VOH 2.5 – VCC +
0.3 V With Serial ID
VOL 0 – 0.5 V –
NC 100 K – – ΩMeasured to RGND/
TGND
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
10 Order Number: 280049, Revision: 006
2.3 Specifications – Optical
Table 6 lists the TXN31111 Optical Transceiver fiber length specifications.
Table 7 lists the TXN31111 Optical Transceiver transmitter optical specifications.
Table 6. Fiber Length Specifications
Parameter Symbol Min. Typ. Max. Units Notes
50 μm/125μm MMF – 0.5
0.5 –500
1000 mBER < 1.0E -12 @ 2.125 Gbps
BER < 1.0E -12 @ 1.0625 Gbps
62.5 μm/125 μm MMF – 0.5
0.5 –300
500 mBER < 1.0E -12 @ 2.125 Gb/s
BER < 1.0E -12 @ 1.0625 Gb/s
Table 7. Optical Specifications – Transmitter
Parameter Symbol Min. Typ. Max. Units Notes
Optical Transmit Power Popt -8 -5 -4 dBm –
Optical Center λ830 850 860 nm –
Spectral Width Uλ– – 0.85 nm RMS
Optical Modulation
Amplitude OMA 250 – – μWpk-pk
Extinction Ratio ER 9 – – dB –
Relative Intensity Noise RIN – – -118 dB/Hz –
Deterministic Jitter DJ – – 30 ps –
Total Jitter TJ – – 65 ps –
Output Rise/Fall Time tR, tF– – 150 ps 20 - 80% values,
measured
unfiltered
Note: Eye Mask: Compliant with eye mask requirements of Fibre Channel – Physical Interfaces (FC-PI-2)
specifications, IEEE 802.3z* Gigabit Ethernet 1000 BASE-SX standard
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 11
Table 8 lists the TXN31111 Optical Transceiver receiver optical specifications.
Table 8. Receiver – Optical Specificat ions
Parameter Symbol Min. Typ. Max. Units Notes
Optical Input
Wavelength – 770 – 860 nm –
Receiver
Overload –––0dBm –
Receiver
Sensitivity
Pr -19 -22 – dBm
1.0625 Gbps
Test conditions:
•10
-12 BER
• 9 dB ER input
•2
7 - 1 PRBS
Pr -17 -20 – dBm
2.125 Gb/s
Test conditions:
•10
-12 BER
• 9 dB ER input
•2
7 - 1 PRBS
Stressed
Sensitivity Compliant with Fibre Channel – Physical Interfaces (FC-PI-2) specifications, IEEE
802.3z* Gigabit Ethernet 1000 BASE-SX standard
Optical Return
Loss ORL 12 – – dB –
LOS - Asserted Pa -29 – – dB Measured on transition –
low to high
LOS -
De-asserted Pd – – -17 dBm Measured on transition –
high to low
LOS - Hysteresis Pa - Pd 1 – 5 dB –
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
12 Order Number: 280049, Revision: 006
3.0 Electrical Interface
Figure 1 shows the TXN31111 Optical Transceiver electrical interface pin numbers and names.
Table 9 lists the plug sequence to follo w during hot plugging, as well as pin functions.
Figure 1. Diagram of Host Board Connector Block Pin Numbers and Names
Table 9. Plug Sequence: Pin Engagement Sequence During Hot Plugging (Sheet 1 of 2)
Pin Name Function Plug
Sequence Notes
1V
eeT Transmitter Ground 1 –
2TX_FAULT
Transmitter Fault
Indication 31
3 TX_DISABLE Transmitter Disable 3 2: Module Disables on high or open
4 MOD_DEF (2) Module Definition 2 3 3: Wire Serial ID interface
5 MOD_DEF (1) Module Definition 1 3 3: Wire Serial ID interface
6 MOD_DEF (0) Module Definition 0 3 3: Grounded Module
7 RATE SELECT – 3 4
8 LOS Loss of Signal 3 5
9V
eeR Receiver Ground 1 6
10 VeeR Receiver Ground 1 6
11 VeeR Receiver Ground 1 6
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 13
12 RD- Inverted Received Dat a
out 37
13 RD+ Non-Inverted Received
Data out 37
14 VeeR Receiver Ground 1 6
15 VccR Receiver Power 2 3.3 V +/- 10% (See also Note 8.)
16 VccT Transmitter Power 2 3.3 V +/- 10% (See also Note 8.)
17 VeeT Transmitter Ground 1 6
18 TD+ Non-inverted Data In 3 9
19 TD- Inverted Data In 3 9
20 VeeT Transmitter Ground 1 6
NOTES:
1. TX FAULT is an open collector/drain output that is pulled up with a 4.7 K - 10 K Ω resistor on the host
board. Use a pull-up voltage between 2.0 V and VccT, R+0.3 V.
• Low: Indicates normal operation. In the low state, the output is pulled to < 0.8 V.
• High: Indicates a laser fault.
2. TX DISABLE is an input used to shut down the transmitter optical output. It is pulled up within the
TXN31111 Optical Transceiver with a 4.7K - 10K Ω resistor. The states are as follows:
• Low (0 - 0.6V): Transmitter Enabled
• (>0.8, <2.0V): Undefined
• High (2.0 - 3.465V): Transmitter Disabled
3. MOD-DEF 0,1,2: These pins are the definition pins for the TXN31111 Optical Transceiver. They are pulled
up with 4.7K - 10K Ω resistor on the host board. Use a pull-up voltage between 2.0V and VccT, R + 0.3V.
• MOD-DEF 0 is grounded by the TXN31111 Optical Transceiver to indicate the TXN31111 Optical
Tr ansceiver is present.
• MOD-DEF 1 is the clock line of a two-wire serial interface for serial ID.
• MOD-DEF 2 is the data line of a two-wire serial interface for serial ID.
4. RATE SELECT: This signal function not implemented in the TXN31111 Optical Transceiver. The
TXN31111 Optical Transceiver is rate agile – that is, it meets the specifications for 1.0625 Gbps to 2.5
Gbps data rates without the use of a rate-select pin.
5. LOS (Loss of Sig n al) has an internal 8K pull-up resistor to VccR. While LOS is defined per the SFP MSA,
• When low, this output indicates normal operation. In the low state, the output is pulled to < 0.8V.
• When high, this output indicates the received optical power is below the worst-case receiver sensitivity
(as defined by the standard in use).
6. RD-/+ are the differential receiver outputs. They are AC-coupled 100 Ω differential lines that are terminated
with 100 Ω (differential) at the user SerDes. The AC coupling is performed inside the TXN31111 Optical
Transceiver and is therefore not required on the host boar d.
7. VccR and VccT: are the receiver and transmitter power supplies. Their values, which are listed in Table 2,
“Recommended Operating Conditions” on page 7, are defined at the SFP connector pin. Maximum supply
current is listed in Table 3, “Electrical Characteristics” on page 8. Hot plugging of the TXN31111 Optical
Transceiver result in the inrush current listed in Table 3, “Electrical Characteristics” on page 8.
8. TD-/+: are the differential transmitter inputs. They are AC-coupled differential lines with 100 Ω differential
termination inside the TXN31111 Optical Transceiver. The AC coupling is done inside the TXN31111
Optical Transceiver and is therefore not required on the host board.
Table 9. Plug Sequence: Pin Engagement Sequence During Hot Plugging (Sheet 2 of 2)
Pin Name Function Plug
Sequence Notes
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
14 Order Number: 280049, Revision: 006
4.0 Termination
4.1 Types of I/O Interfaces
The TXN31111 Optical Transceiver has the following types of I/O interfaces.
•CML interface
•TTL interface
High-speed I/Os use the CML interface, while control signals use the TTL interface. Proper
termination of I/Os is required for good signal integrity. If I/Os (particularly the CML I/Os) are not
terminated properly, then jitter increases significantl y due to reflection from impedance
mismatches.
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 15
4.2 CML Termination
Figure 2 shows a circuit diagram for the CML termination for the TXN31111 Optical Transceiver
receiver output. The TXN31111 Optical Transceiver has built in AC-coupling capacitors, which
help prevent a direct current path from the TXN31111 Optical Transceiver power supply to the
SerDes input. (A direct current path could damage the ESD diodes on th e SerDes.)
•Internal termination. For the TXN31111 Optical Transceiver receiver output, the SerDes
interface provides an internal termination resistor.
•External termination. For the proper external termination of the SerDes interface, refer to the
SerDes specification.
Figure 2. Circuit Diagram for CML Termination on Receiver Output
Receiver Outp u t SerDes Input
AC-coupling
capacitor
50 Ω
100 Ω
3.3 V
B3243-02
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
16 Order Number: 280049, Revision: 006
Figure 3 shows a circuit diagram for the CML termination for the TXN31111 Optical Transceiver
transmitter input.
Internal termination. The TXN31 11 1 Optical Transceiver transmitter input has an internal 100 Ω
termination between two inputs. AC-coupling capacitors are also built into the TXN31111 Optical
Transceiver.
Figure 3. Circuit Diagram for CML Termination on Transmitter Input
Transmitter Input SerDes Outpu t
100 Ω
3.3 V
B3244-02
AC-Coupling
Capacitor
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 17
5.0 SFP Timing Parameters
Table 10 lists thetimin g parameters for SFP management.
Table 10. Timing Parameters for SFP Management
Parameter Symbol Min. Max. Unit Conditions
TX_DISABLE assert time t_off – 10 µs Time from rising edge of
TX_DISABLE to when the optical
output falls below 10% of nominal
TX_DISABLE negate time t_on – 1 ms Time from falling edge of
TX_DISABLE to when the modulated
optical output rises above 90% of
nominal
Time to initialize includes
reset of TX_FAULT t_init – 300 ms Time from power on or negation of
TX_FAULT using TX_DISABLE
TX_FAULT Assert Time t_fault – 100 µs Time from fault to TX_FAULT ON
TX Disable to reset t_reset 10 – µs Time TX Disable must be held high to
reset TX_FAULT
RX_LOS Assert time t_loss_on – 100 µs Time from LOS state to RX_LOS
assert
RX_LOS De-assert time t_loss_off – 100 µs Time from non-LOS state to RX_LOS
de-assert
Rate-Select Change time t_ratesel – 10 µs Time from rising or falling edge of
Rate Select input until receiver
bandwidth is in conformance with
appropriate specification
Serial ID Clock Rate f_serial_clock – 100 KHz –
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
18 Order Number: 280049, Revision: 006
6.0 Serial Identification
Table 11 lists the definitions from the different data stored in the TXN31111 Optical Transceiver
EEPROM.
Table 11. Serial Identification Field Descriptions (Sheet 1 of 3)
Data Address Field Size
(Bytes) Name of Field Description of Field
Base of Fields
0 1 Identifier Type of serial identifier (see Table 12)
1 1 Ext. Identifier Extended identifier of type of serial transceiver
2 1 Connector Connector (see Table 13)
3-10 8 Transceiver Optical Compatibility (see Table 15)
11 1 Encoding Code for serial encoding algorithm (see Table 14)
12 1 BR, Nominal1Nominal bit rate, units of 100Mbps
13 1 Reserved –
14 1 Length (9µ) - km2 Link Length supported for 9/125 µm fiber, units of
km
15 1 Length (9µ)3Link Length supported for 9/125 µm fiber, units of
100 m
16 1 Length (50µ)4 Link Length supported for 50/125 µm fiber, unit s of
10 m
17 1 Length (62.5µ)5 Link Length supported for 62.5/125 µm fiber, units
of 10 m
18 1 Length (Copper)6 Link Length supported for copper, units of meters
19 1 Reserved –
20-35 16 Vendor name7SFP vendor name (ASCII)
36 1 Reserved –
37-39 3 Vendor OUI8SFP vendor IEEE company ID
40-55 16 Vendor PN9 Part number provided by SFP vendor (ASCII)
56-59 4 Vendor rev10 Revision level for part number provided by vendor
(ASCII)
60-62 3 Reserved –
63 1 CC_BASE11 Check code for Base ID fields (address 0 to 62)
Extended ID Fields
64-65 2 Options12 Indicates which optional SFP signals are
implemented (see Table 16)
66 1 BR, Max13 Upper bit rate margin, units of %
67 1 BR, Min14 Lower bit rate margin, units of %
68-83 16 Vendor SN15 Serial number provided by vendor (ASCII)
84-91 8 Date Code 16 Vendor manufacturing date code (see Table 17)
92-94 3 Reserved –
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 19
95 1 CC_EXT Check code for the Extended ID fields (address 64
to 94)
Vendor Specific ID Fields
96-127 32 Read-only Vendor specific data, read only
128-511 384 Reserved Vendor specific
512-n – – –
NOTES:
1. The nominal bit rate (BR, nominal) is specified in units of 100 Mbps, rounded off to the nearest 100 Mbps.
The bit rate includes bits necessary to encode and delimit the signal, and bits carrying data information.
A value of zero indicates that the bit rate is not specified and must be determined from the transceiver
technology. The actual information transfer rate depends on the encoding of the data, as defined by the
encoding value.
2. In addition to EEPROM data from the original GBIC definition, this value specifies the link length that is
supported by the SFP while operating in compliance with the applicable standards using single-mode fiber.
This value is in units of kilometers. A value of 255 means that the SFP supports a link length greater than
254 km. A value of zero means that the SFP does not support single-mode fiber or that the length
information must be determined from the transceiver technology.
3. This value specifies the link length that is supported by the SFP while operating in compliance with the
applicable standards using single-mode fiber. This value is in units of 100 meters. A value of 255 means
that the SFP supports a link length greater than 25.4 km. A value of zero indicates that the SFP does not
support single-mode fiber, or the length information must be determined from the transceiver technology.
4. This value specifies the link length that is supported by the SFP while operating in compliance with the
applicable standards using 50 µm multi-mode fiber. This value is in units of 10 meters. A value of 255
means that the SFP supports a link length greater than 2.54 km. A value of zero indicates that the SFP
does not support 50 µm multimode fiber, or the length information must be determined from the transceiver
technology.
Table 11. Serial Iden t ifi ca ti on Fi eld Description s (Shee t 2 of 3)
Data Address Field Size
(Bytes) Name of Field Description of Field
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20 Order Number: 280049, Revision: 006
6.1 Identifier
The identifier value specifies the physical device described by the serial information. This value is
included in the serial data. Table 12 shows the defined identifi er values.
5. This value specifies the link length that is supported by the SFP while operating in compliance with the
applicable standards using 62.5 µm multi-mode fiber. This value is in units of 10 meters. A value of 255
means that the SFP supports a link length greater than 2.54 km. A value of zero indicates that the SFP
does not support 62.5 µm multi-mode fiber or that the length information must be determined from the
transceiver technology. It is common for the SFP to support both 50 µm and 62.5 µm fiber.
6. This value specifies the minimum link length that is supported by the SFP while operating in compliance
with the applicable standards using copper cabling. This value is in units of 1 meter. A value of 255 means
that the SFP supports a link length greater than 254 meters. A value of zero means that the SFP does not
support copper cables or that the length information must be determined from the transceiver technology.
Further information about the cable design, equalization, and connectors is usually required to guarantee
meeting a particular length requirement.
7. The vendor name is a 16-character field that contains ASCII characters, left-aligned and padded on the
right with ASCII spaces (20h). The vendor name is the full name of the corporation, a commonly accepted
abbreviation of the name of the corporation, the SCSI company code for the corporation, or the stock
exchange code for the corporation. At least one of the vendor names or the vendor OUI fields contain valid
serial data.
8. The vendor organizationally unique identifier field (vendor OUI) is a 3-byte field that contains the IEEE
Company Identifier for the vendor. A value of zero in the 3-byte field indicates that the Vendor OUI is
unspecified.
9. The vendor part number (vendor PN) is a 16-byte field that contains ASCII characters, left-aligned and
padded on the right with ASCII spaces (20h), defining the vendor part number or product name. A value of
all zeros in the 16-byte field indicates that the vendo r PN is unspecified.
10.The vendor revision number (vendor rev) is a 4-byte field that contains ASCII characters, left-aligned and
padded on the right with ASCII spaces (20h), defining the vendor product revision number. A value of all
zeros in the 4-byte field indicates that the vendor PN is unspecified.
11.The check code is a one-byte code that can be used to verify that the first 64 bytes of serial information in
the SFP is valid. The check code is the low order 8 bits of the sum of the contents of all the bytes from byte
0 to 62, inclusive.
12.The bits in the option field specify the options implemented in the SFP as described in Table 16, “Option
Values” on page 23.
13.The upper bit rate limit at which the SFP still meets its specifications (BR, max) is specified in units of 1%
above the nominal bit rate. A value of zero indicates that this field is not specified.
14.The lower bit rate limit at which the SFP still meets its specifications (BR, min) is specified in units of 1%
below the nominal bit rate. A value of zero indicates that this field is not specified.
15.The vendor serial number (vendor SN) is a 16-character field that contains ASCII characters, left aligned
and padded on the right with ASCII spaces (20h), defining the vendor serial number for the SFP. A value of
all zeros in the 16-byte field indicates that the vendo r PN is unspecified.
16.The date code is an 8-byte field that contains the vendor date code in ASCII characters. The date code is
mandatory. The date code is in a format specified in Section 17, “Date Code” on page 24.
Table 11. Serial Identification Field Descriptions (Sheet 3 of 3)
Data Address Field Size
(Bytes) Name of Field Description of Field
Table 12. Identifier Values
Value Description of Physical Device
00h Unknown or unspecified
01h GBIC
02h Module/conn ector soldered to motherboard
03h SFP transceiver
04-7Fh Reserved
80-FFH Vendor specific
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 21
6.2 Connector
The connector value indicates the external connector provided on the interface. This value is
included in the serial data. Table 13 shows the defined connector values.
6.3 Encoding
The encoding value indicates the serial encoding mechanism that is the nominal design target of the
TXN31111 Optical Transceiver. Table 14 shows the defined encoding values.
Table 13. Connector Values
Value Description of Physical Device
00h Unknown or unspecified
01h SC
02h Fibre Channel Style 1 copper connector
03h Fibre Channel Style 2 copper connector
04h BNC/TNC
05h Fibre Channel Coaxial headers
06h Fibre Jack
07h LC
08h MT-RJ
09h MU
0Ah SG
0Bh Optical Pigtail
0C-1Fh Reserved
20h HSSDC II
21h Copper Pigtail
22-7Fh Reserved
80-FFh Vendor specific
NOTE: 01h-05h are not SFP compatible, and are
included for compatibility with GBIC standards.
Table 14. Encoding Codes
Value Description of Physical Device
00h Unspecified
01h 8B10B
02h 4B5B
03h NRZ
04h Manchester
05h-FFh Reserved
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
22 Order Number: 280049, Revision: 006
6.4 Transceiver
Table 15 defines the method to interpret the transceiver type for the TXN31111 Optical Transceiver
and its associated compatibility options.
Table 15. Transceiver Codes (Sheet 1 of 2)
Data Bit (Note 1) Description of
Transceiver Data Addr Bit (Note 1) Description of
Transceiver
Reserved Standard Compliance Codes Fiber Channel Link Length
3 7-0 Reserved 7 7 Very Long
Distance (V)
4 7-4 Reserved 7 6 Short Distance (S)
SONET
Compliance
Codes 75
Intermediate
Distance (S)
4 3 Reserved 7 4 Long Distance (L)
42
OC-48 long
reach Fiber Channel Transmit Technology
41
OC-48
intermediate
reach 7 3-2 Reserved
40
OC-48 short
reach 71
Longwave Laser
(LC)
57Reserved70
Electrical inter-
enclosure (EL)
56
OC-12 single
mode long
reach 87
Electrical inter-
enclosure (EL)
55
OC-12 single
mode
intermediate
reach 86
Shortwave Laser
w/o OFC (SL)
54
OC-12 short
mode
intermediate
reach 85
Shortwave laser w/
OFC (SL)
53Reserved84
Longwave laser
(LL)
52
OC-3, single
mode long
reach 8 0-3 Reserved
51
OC-3, single
mode
intermediate
reach
50
OC-3, single
mode short
reach Fibre Channel Transmission Media
97
Twin Axel Pair
(TW)
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 23
Note: Bit 7 is the high order bit and is transmitted first in each byte.
Table 16 defines the method to interpret and the optio nal SFP signals that are implemented in th e
TXN31111 Optical Transceiver.
96
Shielded twisted
pair ( TP)
95
Miniature coax
(MI)
6 7-4 Reserved 9 4 Video coax (TV)
6 3 1000BASE-T 9 3 Multi-mode, 62.5µ
(M6)
6 2 1000BASE-CX 9 2 Multi-mode, 50µ
(M5)
6 1 1000BASE-LX 9 1 Reserved
6 0 1000BASE-SX 9 0 Single mode (SM)
Fibre Channel Speed
10 7-5 Reserved
10 4 400 MBytes/Sec
10 3 Reserved
10 2 200 MBytes/Sec
10 1 Reserved
10 0 100 MBytes/Secc
Table 15. Transceiver Codes (Sheet 2 of 2)
Data Bit (Note 1) Description of
Transceiver Data Addr Bit (Note 1) Description of
Transceiver
Table 16. Option Values
Value Bit Description of Physical Device
64 7-0 Reserved
65 7-6 Reserved
65 5 RATE_SELECT is implemented if a bit is set. Active control of the rate select pin is
required to change rates. If a bit is not set, no control of the pin is required. In all cases,
compliance with multiple rate standards should be determined by the Transceiver Codes
in Bytes 4,5,6, and 10. (See Table 15)
65 4 TX_DISABLE is implemented and disables the serial output.
65 3 TX_FAULT signal implemented. (Reset is defined in Section 4.0, “Termination” on
page 14.)
65 2 Loss of signal is defined per the SFP MSA.
Signal Detect is implemented, the signal is inverted.
NOTE: This is not standard SFP behavior.
65 1 Loss of signal implemented (see Table 8)
65 0 Reserved
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
24 Order Number: 280049, Revision: 006
Table 17 defines the method to interpret the manufacturing date stored in the EEPROM Date Code
section.
Table 17. Date Code
Data Address Description of Field
84-85 ASCII code, two low order digits of year (00 = 2000)
86-87 ASCII code, digits of month (01 = Jan through 12 = Dec)
88-89 ASCII code, day of month (01-31)
90-91 ASCII code, vendor specific lot code, may be blank
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 25
7.0 Mechanical Specification
Figure 4 shows the mechanical specifications of the TXN31111 Optical Transceiver. The
dimensions comply with the SFP Multisource Agreement. All dimensions are in millimeters.
Note: Aqueous wash is not applicable fo r this product
Figure 4. SFP Mechanical Specifications
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
26 Order Number: 280049, Revision: 006
8.0 Regulatory Compliance
This section discusses the following topics:
•Section 8.1, “Electromagnetic Compatibility Compliance” on page 26
•Section 8.2, “Safety Compliance” on page 27
•Section 8.3, “Lead-Free Conformance” on page 28
•Section 8.4, “Compliance with Restriction of Hazardous Substances” on page 28
•Section 8.5, “Product Certification Markings and Compliance Statements” on page 29
8.1 Electromagnetic Compatibility Compliance
Table 18 l ists emissions and immunity regulations with which the TXN31111 Optical Transceiver
complies when tested in a representative chassis.
Table 18. Electromagnetic Compatibility Compliance
Requirement Regulation Performance Level
Electromagnetic interference (EMI) • FCC rules, Part 15,
subpart B
• EN 55022
Meets Class B limits with a minimum
6 dB margin
Electrostatic discharge (ESD)
JEDEC JESD22-A114-B
Human Body Model ± 2 kV contact discharge to connector
electrical pins with no degradation in
performance or loss of function
EN 61000-4-2
• ± 8 kV air discharge
• ± 4 kV contact discharge to face plate
Meets Level A test criteria (that is, no
degradation of performance or loss of
function occurs)
Radio frequency electromagnetic
field (Radiated immunity) EN 61000-4-3,
level A test criteria 10 V/m from 80 MHz to 1 GHz with no
degradation of performance or loss of
function
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 27
8.2 Safety Compliance
Table 19 lists and describes the relevant safety regulations with which the TXN31111 Optical
Transceiver complies.
Table 19. Safety Compliance
Requirement Regulation Title
Product Safety
UL 60950-1:2003 /
CSA C22.2 No. 60950-1-03 Information Technology Equipment – Safety - Part 1:
General Requirements (USA and Canada)
EN 60950-1:2002 Information Technology Equipment – Safety - Part 1:
General Requirements (European Union)
IEC 60950-1:2001 Information Technology Equipm ent – Safety - Part 1:
General Requirements (International)
Laser Safety
21CFR1040.10 Title 21 Chapter I Subchapter J –
Radiological Health Part 1040:
Performance Standards for Light-Emitting Products
EN 60825-1: 1994 +A1 +A2 Safety of Laser Products - Part 1:
Equipment Classification, Requirements and User's Guide
IEC 60825-1: 1993 +A1 +A2 Safety of Laser Products - Part 1:
Equipment Classification, Requirements and User's Guide
EN 60825-2: 2000 Safety of Laser Products - Part 2:
Safety of Optical Fiber Communication Systems
IEC 60825-2: 2000 Safety of Laser Products - Part 2:
Safety of Optical Fiber Communication Systems
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
28 Order Number: 280049, Revision: 006
8.3 Lead-Free Conformance
The TXN31111 Optical Transcei ver uses a lead-free assem bly, althoug h certai n discrete
components within the assembly may contain lead, being necessary for either component
performance or reliability. The TXN31111 Optical Transceiver is referred to as a “Lead-free 2nd
Level Interconnect.” The enclosure, circuit board substrate, and the solder connections from the
circuit board to the components (second-level connections) are all lead-free.
Table 20 lists various forms of the “Lead-Free 2nd Level Interconnect” marking for the TXN31111
Optical Transceiver and accompanying collateral.
8.4 Compliance with Restriction of Hazardous Substances
This product complies with the European Union directive for Restriction of Hazardous Substances
(RoHS) – Restriction on the Use of Certain Hazardous Substances in Electrical and Electronic
Equipment, Directive 2002/95/EC plus amendments.
However, certain discrete components do contain lead (a RoHS-restricted substance) in amounts
that exceed threshold concentration levels. This product uses the following applicable RoHS
technology exemptions:
•Lead in optical and filter glass, and
•Lead in glass of electronic components
Note: RoHS implementation details are subject to change.
Table 20. Lead-Free 2nd-Level Interconnect Markings
Description Marking
Lead-Free 2nd Level Interconnect:
The Lead-Free 2nd Level Interconnect
symbol is used to identify electrical and
electronic assemblies and components
in which the lead (Pb) concentration
level in the circuit board substr ate and
the solder connections from the circuit
board to the components (second-level
interconnect) are not greater than 0.1%
by weight (1000 ppm).
Note: Any of the three symbols
shown may be used, as space
permits.
or
or
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 29
8.5 Product Certification Markings and Compliance Statements
Table 21 lists the TXN31111 Optical Transceiver product certification markings and compliance
statements.
Table 21. Product Certification Markings and Compliance Statements
Origin and Description Markings and Compliance Statements
Markings
CE mark.
The CE (Conformité Européene*) mark indicates
compliance to the European Union Low Voltage directive
(73/23/EEC).
TÜV Rheinland type approval mark for components and
subassemblies for the European Union.
The Technischer Überwachungsverein* (TÜV – German for
“Technical Inspection Association”) Rheinland type approval
mark is for components and subassemblies for the
European Union.
Where space does not permit, the smaller alternate T ÜV
mark (see the next row in this table) may be used.
TÜV Rheinland type approval mark for components and
subassemblies for the European Union – Alternate.
This alternate mark may be used where space constraints
exist that do not permit use of the TUV Rheinland mark in
the previous row of this table.
Alternate TÜV mark:
UL Recognized Component mark for the USA and Canada.
Compliance Statements
USA Food and Drug Administration (FDA), Center for
Devices and Radiological Health compliance statement. Complies with 21CFR 1040.10 and 1040.11
except for deviations pursuant to Laser Notice
No. 50, dated July 26, 2001.
USA FDA, Center for Devices and Radiological Health
compliance statement – Alternate.
Use the alternate statement listed, as needed.
Alternate FDA compliance statement:
Complies with FDA performance standards for
laser products except for deviations pursuant to
Laser Notice No. 50, dated July 26, 2001.
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
20-Sept-2006 Datasheet
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
30 Order Number: 280049, Revision: 006
9.0 Ordering Information
Table 22 l ists ordering information for the RoHS-compliant TXN3111101 Optical Transceiver.
Table 22. Ordering Information
Part Number Description
Intel®TXN311110100xxx Tri-rate 2/1 Gbps Fibre Channel and Gigabit Ethernet SFP module1
Note:
1. The last 3 characters of the part number ("xxx") are used to designate customer-specific
customizations. The Intel standard part has "000" as the last three characters.
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Datasheet 20-Sept-2006
Intel® TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006 31
10.0 Acronyms
§ §
Table 23. Acronyms
Acronym Meaning
BER Bit Error Rate
CFR Code of Federal Relations
CML Current Mode Logic
EMI Electro-Magnetic Interference
ESD Electro-Static Discharge
EU European Union
FC-PI Fiber Channel – Physical Interfaces
FCC Federal Communications Commission
FDA Food and Drug Administration
GBIC GigaBit Interface Converter
IEC International Electrotechnical Commission
IEEE Institute of Electrical and Electronics Engineers
LOS Loss of Signal
MMF Multi-Mode Fiber
MSA Multisource Agreement
NRZ Non-Return to Zero
Pb Lead
PCB Printed Circuit Board
PRBS Pseudo Random Bit Sequence
RFI Radio Frequency Immunity
SFF Small-Form Factor
SCSI Small Computer System Interface
SONET Synchronous Optical Network
TOSA Transmitter Optical Sub-Assembly
TTL Transistor-Transistor Logic
TUV Technischer Überwachungsverein
UL Underwriter Laboratories*
VCSEL Vertical Cavity Surface Emitting Laser
