W83194AR-We 200MHZ CLOCK FOR WHITNEY CHIPSET W83194AR-We Data Sheet Revision History Pages Dates Version Version Main Contents on Web 1 n.a. 2 n.a. 02/Apr 1.0 n.a. All of the versions before 0.50 are for internal use. 1.0 Change version and version on web site to 1.0 3 4 5 6 7 8 9 10 Please note that all data and specifications are subject to change without notice. All the trademarks of products and companies mentioned in this data sheet belong to their respective owners. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sales. -1- Publication Release Date: July 1999 Revision 1.0 W83194AR-We 1.0 GENERAL DESCRIPTION The W83194AR-We is a Clock Synthesizer for Intel Whitney chipset. W83194AR-We provides all clocks required for high-speed RISC or CISC microprocessor and also provides 64 different frequencies of CPU, SDRAM, PCI, 3V66, IOAPIC clocks frequency setting. All clocks are externally selectable with smooth transitions. The W83194AR-We provides I2C serial bus interface to program the registers to enable or disable each clock outputs and provides 0.5% and 0.75% center type spread spectrum to reduce EMI. The W83194AR-We accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply. High drive PCI and SDRAM CLOCK outputs typically provide greater than 1 V /ns slew rate into 30 pF loads. CPU CLOCK outputs typically provide better than 1 V /ns slew rate into 20 pF loads as maintaining 50 5% duty cycle. The fixed frequency outputs as REF, 24MHz, and 48 MHz provide better than 0.5V /ns slew rate. 2.0 PRODUCT FEATURES * * * * * * 2 CPU clocks 9 SDRAM clocks for 2 DIMMs 8 PCI synchronous clocks. Optional single or mixed supply: (VddR = VddP=VddS = Vdd48 = Vdd3 = 3.3V, VddA=VddC=2.5V) Skew form CPU to PCI clock -1 to 4 ns, center 2.6 ns Smooth frequency switch with selections from 66.8 to 200MHz I2C 2-Wire serial interface and I2C read back 0.5% and 0.75% center type spread spectrum Programmable registers to enable/stop each output and select modes (mode as Tri-state or Normal ) Two 48 MHz pins for USB 24 MHz for super I/O * 48-pin SSOP package * * * * * -2- Publication Release Date : July 1999 Revision 1.0 W83194AR-We 3.0 PIN CONFIGURATION REFX2/*FS3 VddR Xin Xout Vss Vdd3 3V66-0 3V66-1 Vss3 PCICLK0/ *FS0 PCICLK1/ FS1# PCICLK2/*FS2 VssP PCICLK3/ *APIC_SEL PCICLK4 VddP PCICLK5 PCICLK6 PCICLK7 Vss48 48MHz_0 48MHz_1/ FS4# *SIO_SEL/24_48MHz Vdd48 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 -3- VddLAPIC IOAPIC VddLCPU CPUCLK0 CPUCLK1 VssC VddS SDRAM 0 SDRAM 1 SDRAM 2 VssS SDRAM 3 SDRAM 4 SDRAM 5 VddS SDRAM 6 SDRAM 7 SDRAM 8 VssS PD# *SDCLK VddA VssA *SDATA Publication Release Date : July 1999 Revision 1.0 W83194AR-We 4.0 PIN DESCRIPTION IN - Input OUT - Output I/O - Bi-directional Pin # - Active Low * - Internal 250k pull-up 4.1 Crystal I/O SYMBOL PIN I/O Xin 3 IN Xout 4 OUT FUNCTION Crystal input with internal loading capacitors and feedback resistors. Crystal output at 14.318MHz nominally. 4.2 CPU, SDRAM, PCI, IOAPIC Clock Outputs SYMBOL PIN I/O 45,44 OUT 29 47 IN OUT OUT PCICLK0/ *FS0 41,40, 39,37,36,35,33 ,32,31 10 PCICLK1/ FS1# 11 I/O PCICLK2/ *FS2 12 I/O PCICLK3/*APIC_SEL 14 I/O 15,17,18,19 7,8 OUT OUT CPUCLK [0:1] PD# IOAPIC SDRAM [ 0:8] PCICLK [ 4:7 ] 3V66 [0:1] I/O FUNCTION Low skew (< 250ps) clock outputs for host frequencies such as CPU and Chipset. Power Down mode when driven low. Clock outputs synchronous with PCI clock and powered by VddA. SDRAM clock outputs. 3.3V 33MHz PCI clock during normal operation. Latched input for FS0 at initial power up for H/W selecting the output frequency of CPU, SDRAM and PCI clocks(Default=1). Low skew (< 250ps) PCI clock outputs. Latched input for FS1 at initial power up for H/W selecting the output frequency of CPU, SDRAM and PCI clocks(Default=0). Low skew (< 250ps) PCI clock outputs. Latched input for FS2 at initial power up for H/W selecting the output frequency of CPU, SDRAM and PCI clocks(Default=1). Low skew (< 250ps) PCI clock outputs. Latched input for APIC_SEL at initial power up for H/W selecting the output frequency of IOAPIC clock (Default=1). Low skew (< 250ps) PCI clock outputs. 3.3V output clocks for the chipset. -4- Publication Release Date : July 1999 Revision 1.0 W83194AR-We 4.3 I2C Control Interface SYMBOL PIN I/O FUNCTION 2 *SDATA 25 I/O Serial data of I C 2-wire control interface with internal pull-up resistor. *SDCLK 28 IN Serial clock of I2C 2-wire control interface with internal pull-up resistor. 4.4 Fixed Frequency Outputs SYMBOL REFX2 / *FS3 PIN I/O 3 I/O FUNCTION 14.318MHz reference clock. This REF output is the stronger buffer for ISA bus loads. Latched input for FS3 at initial power up for H/W selecting the output frequency of CPU, SDRAM and PCI clocks (Default=1). *SIO_SEL/24_48MHz 23 I/O 24MHz or 48MHz output clock. Latched input for SIO_SEL at initial power up for the output frequency of 24MHz(HIGH) and 48MHz(LOW) clocks. 48MHz_0 21 O 48MHz output for USB during normal operation. 48MHz_1/ FS4# 22 I/O 48MHz / Latched input for FS4 at initial power up for H/W selecting the output frequency of CPU, SDRAM and PCI clocks (Default=0). 4.5 Power Pins SYMBOL PIN FUNCTION VddL 48 Power supply for CPU & IOAPIC, 2.5V or 3.3V. Vdd48 24 Power supply for 48MHz output,3.3V. Vdd3 6 Power supply for 3V_66 output, 3.3V. VddP 16 Power supply for PCICLK, 3.3V. VddR 2 Power supply for REFX2, 3.3V. VddS 42,34 VddA 27 Vss Power supply for SDRAM[0:8], nominal 3.3V. Power for I2C CLK and DATA. 5,9,13,20,26,30,38, Circuit Ground. 43 -5- Publication Release Date : July 1999 Revision 1.0 W83194AR-We 5.0 FREQUENCY SELECTION BY HARDWARE FS4 0 FS3 0 FS2 0 FS1 0 FS0 0 CPU (MHz) SDRAM (MHz) 83.3 124.95 CPU /SDRAM 2/3 3V66 (MHz) 83.30 PCI(MHz) IOAPIC (MHz) IOAPIC (MHz) APIC_SEL=1 APIC_SEL=0 41.65 20.83 41.65 0 0 0 0 1 90 90 1 60.00 30.00 15.00 30.00 0 0 0 1 0 75 112.5 2/3 75.00 37.50 18.75 37.50 0 0 0 1 1 72 108 2/3 72.00 36.00 18.00 36.00 0 0 1 0 0 89.07 133.6 2/3 89.07 44.53 22.27 44.53 0 0 1 0 1 95.25 95.25 1 63.50 31.75 15.88 31.75 0 0 1 1 0 121 121 1 80.67 40.33 20.17 40.33 0 0 1 1 1 124 124 1 82.67 41.33 20.67 41.33 0 1 0 0 0 119 119 1 79.33 39.67 19.83 39.67 0 1 0 0 1 114 114 1 76.00 38.00 19.00 38.00 0 1 0 1 0 110 110 1 73.33 36.67 18.33 36.67 0 1 0 1 1 105 105 1 70.00 35.00 17.50 35.00 0 1 1 0 0 66.8 100.2 2/3 66.80 33.40 16.70 33.40 0 1 1 0 1 100.2 100.2 1 66.80 33.40 16.70 33.40 0 1 1 1 0 133.6 133.6 1 66.80 33.40 16.70 33.40 0 1 1 1 1 133.6 100.2 4/3 66.80 33.40 16.70 33.40 1 0 0 0 0 135 101.25 4/3 67.50 33.75 16.88 33.75 1 0 0 0 1 125 125 1 83.33 41.67 20.83 41.67 1 0 0 1 0 127 127 1 84.67 42.33 21.17 42.33 1 0 0 1 1 130 130 1 86.67 43.33 21.67 43.33 1 0 1 0 0 140 140 1 70.00 35.00 17.50 35.00 1 0 1 0 1 136 136 1 68.00 34.00 17.00 34.00 1 0 1 1 0 166 166.00 1 83.00 41.50 20.75 41.50 1 0 1 1 1 155 155 1 77.50 38.75 19.38 38.75 1 1 0 0 0 150 112.5 4/3 75.00 37.50 18.75 37.50 1 1 0 0 1 117 117 1 78.00 39.00 19.50 39.00 1 1 0 1 0 107 107 1 71.33 35.67 17.83 35.67 1 1 0 1 1 100.9 100.9 1 67.27 33.63 16.82 33.63 1 1 1 0 0 145 108.75 4/3 72.50 36.25 18.13 36.25 1 1 1 0 1 140 105 4/3 70.00 35.00 17.50 35.00 1 1 1 1 0 138 103.5 4/3 69.00 34.50 17.25 34.50 1 1 1 1 1 137 102.75 4/3 68.50 34.25 17.13 34.25 -6- Publication Release Date : July 1999 Revision 1.0 W83194AR-We 6.0 SERIAL CONTROL 0REGISTERS The Pin column lists the affected pin number and the @PowerUp column gives the state at true power up. Registers are set to the values shown only on true power up. "Command Code" byte and "Byte Count" byte must be sent following the acknowledge of the Address Byte. Although the data (bits) in these two bytes are considered "don't care", they must be sent and will be acknowledge. After that, the below described sequence (Register 0, Register 1, Register 2, ....) will be valid and acknowledged. Frequency Table Setting by I2C (SEL5 ~ SEL0) SS EL5 SS EL4 SS EL3 SS EL2 SS EL1 SS EL0 CPU (MHz) SDRAM (MHz) CPU/S DRAM 3V66 (MHz) PCI(M Hz) IOAPIC (MHz) APIC_SEL=1 IOAPIC (MHz) APIC_SEL=0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 83.3 90 75 72 89.07 95.25 121 124 119 114 110 105 66.8 100.2 133.6 133.6 135 125 127 130 140 136 166 155 150 117 107 100.9 145 140 138 137 124.95 90 112.5 108 133.6 95.25 121 124 119 114 110 105 100.2 100.2 133.6 100.2 101.25 125 127 130 140 136 166.00 155 112.5 117 107 100.9 108.75 105 103.5 102.75 2/3 1 2/3 2/3 2/3 1 1 1 1 1 1 1 2/3 1 1 4/3 4/3 1 1 1 1 1 1 1 4/3 1 1 1 4/3 4/3 4/3 4/3 83.30 60.00 75.00 72.00 89.07 63.50 80.67 82.67 79.33 76.00 73.33 70.00 66.80 66.80 66.80 66.80 41.65 30.00 37.50 36.00 44.53 31.75 40.33 41.33 39.67 38.00 36.67 35.00 33.40 33.40 33.40 33.40 20.83 15.00 18.75 18.00 22.27 15.88 20.17 20.67 19.83 19.00 18.33 17.50 16.70 16.70 16.70 16.70 41.65 30.00 37.50 36.00 44.53 31.75 40.33 41.33 39.67 38.00 36.67 35.00 33.40 33.40 33.40 33.40 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 67.50 83.33 84.67 86.67 70.00 68.00 83.00 77.50 75.00 78.00 71.33 67.27 72.50 70.00 69.00 68.50 33.75 41.67 42.33 43.33 35.00 34.00 41.50 38.75 37.50 39.00 35.67 33.63 36.25 35.00 34.50 34.25 16.88 20.83 21.17 21.67 17.50 17.00 20.75 19.38 18.75 19.50 17.83 16.82 18.13 17.50 17.25 17.13 33.75 41.67 42.33 43.33 35.00 34.00 41.50 38.75 37.50 39.00 35.67 33.63 36.25 35.00 34.50 34.25 SS EL5 SS EL4 SS EL3 SS EL2 SS EL1 SS EL0 CPU (MHz) SDRAM (MHz) CPU/S DRAM 3V66 (MHz) PCI(M Hz) IOAPIC (MHz) APIC_SEL=1 IOAPIC (MHz) APIC_SEL=0 1 0 0 0 0 0 136 102.00 4/3 68.00 34.00 17.00 34.00 -7- Publication Release Date : July 1999 Revision 1.0 W83194AR-We 1 0 0 0 0 1 138 138.00 1 69.00 34.50 17.25 34.50 1 0 0 0 1 0 139 104.25 4/3 69.50 34.75 17.38 34.75 1 0 0 0 1 1 141 141.00 1 70.50 35.25 17.63 35.25 1 0 0 1 0 0 142 142.00 1 71.00 35.50 17.75 35.50 1 0 0 1 0 1 142 106.50 4/3 71.00 35.50 17.75 35.50 1 0 0 1 1 0 143 143.00 1 71.50 35.75 17.88 35.75 1 0 0 1 1 1 143 107.25 4/3 71.50 35.75 17.88 35.75 1 0 1 0 0 0 144 144.00 1 72.00 36.00 18.00 36.00 1 0 1 0 0 1 144 108.00 4/3 72.00 36.00 18.00 36.00 1 0 1 0 1 0 146 146 1 73.00 36.50 18.25 36.50 1 0 1 0 1 1 146 109.50 4/3 73.00 36.50 18.25 36.50 1 0 1 1 0 0 147 147 1 73.50 36.75 18.38 36.75 1 0 1 1 0 1 147 110.25 4/3 73.50 36.75 18.38 36.75 1 0 1 1 1 0 148 148.00 1 74.00 37.00 18.50 37.00 1 0 1 1 1 1 148 111.00 4/3 74.00 37.00 18.50 37.00 1 1 0 0 0 0 149 111.75 4/3 74.50 37.25 18.63 37.25 1 1 0 0 0 1 152 152.00 1 76.00 38.00 19.00 38.00 1 1 0 0 1 0 153 114.75 4/3 76.50 38.25 19.13 38.25 1 1 0 0 1 1 156 156.00 1 78.00 39.00 19.50 39.00 1 1 0 1 0 0 157 117.75 4/3 78.50 39.25 19.63 39.25 1 1 0 1 0 1 158 158.00 1 79.00 39.50 19.75 39.50 1 1 0 1 1 0 159 119.25 4/3 79.50 39.75 19.88 39.75 1 1 0 1 1 1 160 160.00 1 80.00 40.00 20.00 40.00 1 1 1 0 0 0 162 121.5 4/3 81.00 40.50 20.25 40.50 1 1 1 0 0 1 164 164.00 1 82.00 41.00 20.50 41.00 1 1 1 0 1 0 170 170.00 1 85.00 42.50 21.25 42.50 1 1 1 0 1 1 175 175 1 87.5 43.75 21.88 43.75 1 1 1 1 0 0 180 90 2 60 30 15 30 1 1 1 1 0 1 185 92.5 2 61.67 30.83 15.42 30.83 1 1 1 1 1 0 190 126.67 3/2 63.33 31.67 15.83 31.67 1 1 1 1 1 1 200.4 133.60 3/2 66.80 33.40 16.70 33.40 -8- Publication Release Date : July 1999 Revision 1.0 W83194AR-We 6.1 Register 0: Control Register Bit @PowerUp Pin Description 7 0 - Reserved 6 1 1 REF2X(Active / Inactive) 5 0 - Reserved 4 0 - Reserved 3 0 - Reserved 2 1 23 1 1 21,22 0 1 31 24_48MHz(Active / Inactive) 48MHz_0, 48MHz_1(Active / Inactive) SDRAM8(Active / Inactive) 6.2 Register 1 : SDRAM Register (1 = Active, 0 = Inactive) Bit @PowerUp Pin Description 7 1 32 SDRAM7 (Active / Inactive) 6 1 33 SDRAM6 (Active / Inactive) 5 1 35 SDRAM5 (Active / Inactive) 4 1 36 SDRAM4 (Active / Inactive) 3 1 37 SDRAM3 (Active / Inactive) 2 1 39 SDRAM2 (Active / Inactive) 1 1 40 SDRAM1 (Active / Inactive) 0 1 41 SDRAM0 (Active / Inactive) 6.3 Register 2: PCI Clock Register (1 = Active, 0 = Inactive) Bit @PowerUp Pin Description 7 1 19 PCICLK7 (Active / Inactive) 6 1 18 PCICLK6 (Active / Inactive) 5 1 17 PCICLK5 (Active / Inactive) 4 1 15 PCICLK4 (Active / Inactive) 3 1 14 PCICLK3 (Active / Inactive) 2 1 12 PCICLK2 (Active / Inactive) 1 1 11 PCICLK1 (Active / Inactive) 0 1 10 PCICLK0 (Active / Inactive) 6.4 Register 3: CPU Clock Register (1 = Active, 0 = Inactive) Bit @PowerUp Pin Description -9- Publication Release Date : July 1999 Revision 1.0 W83194AR-We 7 X - FS0# 6 1 7 3V66_0(Active / Inactive) 5 1 8 3V66_1(Active / Inactive) 4 X - FS1# 3 1 47 IOAPIC(Active / Inactive) 2 1 44 CPUCLK1 (Active / Inactive) 1 1 45 CPUCLK0 (Active / Inactive) 0 X - FS2# 6.5 Register 4: Control Register (1 = Active, 0 = Inactive) Bit @PowerUp Pin Description 7 0 - SSEL3 (Frequency table selection by software via I2C ) 6 0 - SSEL2 ( Frequency table selection by software via I2C) 5 0 - SSEL1 ( Frequency table selection by software via I2C) 4 0 - SSEL0 ( Frequency table selection by software via I2C) 3 0 - 2 0 - 0 = Selection by hardware 1 = Selection by software I2C - Bit (1,2, 4:7) SSEL4 (Frequency table selection by software via I2C ) 1 0 - SSEL5 (Frequency table selection by software via I2C ) 0 0 - Reserved 6.6 Register 5: Control Register (1 = Active, 0 = Inactive) Bit @PowerUp Pin Description 7 0 - 6 1 - 0 = 0.5% Center type Spread Spectrum Modulation 1 = 0.75% Center type Spread Spectrum Modulation Reserved 5 0 - Reserved 4 0 - Reserved 3 X - FS3# 2 X - FS4# 1 0 - 0 = Normal 1 = Spread spectrum enabled 0 X - APIC_SEL# 6.7 Register 6: Winbond Chip ID Register (Read Only) Bit @PowerUp Pin Description - 10 - Publication Release Date : July 1999 Revision 1.0 W83194AR-We 7 1 - Winbond Chip ID 6 0 - Winbond Chip ID 5 0 - Winbond Chip ID 4 1 - Winbond Chip ID 3 1 - Winbond Chip ID 2 0 - Winbond Chip ID 1 0 - Winbond Chip ID 0 0 - Winbond Chip ID 6.8 Register 7: Winbond Chip ID Register (Read Only) Bit @PowerUp Pin Description 7 0 - Winbond Chip ID 6 0 - Winbond Chip ID 5 0 - Winbond Chip ID 4 1 - Winbond Chip ID 3 0 - Winbond Chip ID 2 0 - Winbond Version ID 1 0 - Winbond Version ID 0 1 - Winbond Version ID 7.0 ORDERING INFORMATION Part Number Package Type Production Flow - 11 - Publication Release Date : July 1999 Revision 1.0 W83194AR-We W83194AR-We 48 PIN SSOP Commercial, 0C to +70C 8.0 HOW TO READ THE TOP MARKING W83194AR-We 28051234 814GAB 1st line: Winbond logo and the type number: W83194AR-We 2nd line: Tracking code 2 8051234 2: wafers manufactured in Winbond FAB 2 8051234: wafer production series lot number 3rd line: Tracking code 814 G B B 814: packages made in '98, week 14 G: assembly house ID; O means OSE, G means GR A: Internal use code B: IC revision All the trade marks of products and companies mentioned in this data sheet belong to their respective owners. - 12 - Publication Release Date : July 1999 Revision 1.0 W83194AR-We 9.0 PACKAGE DRAWING AND DIMENSIONS Headquarters No. 4, Creation Rd. III Science-Based Industrial Park Hsinchu, Taiwan TEL: 886-35-770066 FAX: 886-35-789467 www: http://www.winbond.com.tw/ Winbond Electronics (H.K.) Ltd. Winbond Electronics Rm. 803, World Trade Square, Tower II (North America) Corp. 123 Hoi Bun Rd., Kwun Tong 2727 North First Street Kowloon, Hong Kong San Jose, California 95134 TEL: 852-27516023-7 TEL: 1-408-9436666 FAX: 852-27552064 FAX: 1-408-9436668 Taipei Office 9F, No. 480, Rueiguang Road, Neihu District, Taipei, 114, Taiwan TEL: 886-2-81777168 FAX: 886-2-87153579 Please note that all data and specifications are subject to change without notice. All the trade marks of products and companies mentioned in this data sheet belong to their respective owners. These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sale. - 13 - Publication Release Date : July 1999 Revision 1.0