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W83195BR-S
STEPLESS 200MHZ 3-DIMM CLOCK FOR SOLANO CHIPSET 1.0 GENERAL DESCRIPTION
The W83195BR-S is a Clock Synthesizer for Intel 815 Solano chipset. W83195BR-S 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 W83195BR-S provides I2C serial bus interface to program the registers to enable or disable each clock outputs and provides 0.25% and 0.5% center type spread spectrum to reduce EMI. A watch dog timer is quipped and when time out, the RESET# pin will output 4ms pulse signal. The W83195BR-S provides stepless frequency programming by controlling the VCO freq. and the clock output divisor ratio. Also the skew of CPU, SDRAM and 3V66 clock outputs are programmable. The W83195BR-S 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 * 3 3V66 for chipset and AGP clocks * 12 SDRAM clocks for 3 DIMMs * 8 PCI synchronous clocks. * Optional single or mixed supply: (VddR = VddP=VddS = Vdd48 = Vdd3 = 3.3V, VddLAPIC=VddLCPU=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 200 MHz 2 2 * I C 2-Wire serial interface and I C read back * 0.25% and 0.5% 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 * 56-pin SSOP package
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Publication Release Date: June 2000 Revision 0.42
W83195BR-S
PRELIMINARY
3.0 PIN CONFIGURATION
Vss Vdd3 REF2X/ *FS3 Xin Xout Vdd3 3V66-0 3V66-1 3V66-2 Vss3 PCICLK0^/ *FS0 PCICLK1^/ *FS1 PCICLK2^/*FS2 VssP PCICLK3^/Mode1* PCICLK4^ Vdd3 PCICLK5^ PCICLK6^ PCICLK7 Vss48 48MHz_0 48MHz_1/ FS4* SIO_SEL*/24_48MHz Vdd3 *SDATA VssS Vdd3 *: interanl pull-up #:active low input ^:1.5X~2X strength $: open drain 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 Vdd2 IOAPIC Vss VddLCPU CPUCLK0 CPUCLK1 VssC SDRAM 0 SDRAM 1 SDRAM 2 Vdd3 VssS SDRAM 3 SDRAM 4 SDRAM 5 SDRAM 6 Vdd3 VssS SDRAM 7 SDRAM 8 SDRAM 9 SDRAM 10 Vdd3 VssS SDRAM 11 SDRAM 12 PD#/RESET$ *SDCLK
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Publication Release Date: June 2000 Revision 0.42
W83195BR-S
PRELIMINARY
4.0 FREQUENCY SELECTION BY HARDWARE
FS4 FS3 FS2 FS1 FS0
CPU(MHz) 75.30 95.00 129.00 150.00 150.00 110.00 140.00 144.00 68.30 105.00 138.00 140.00 66.80 100.20 133.60 133.60 157.30 160.00 146.00 122.00 127.00 122.00 117.00 114.00 80.00 78.00 166.00 160.00 66.60 100.00 133.30 133.30
SDRAM (MHz) 112.95 95.00 129.00 113.00 150.00 110.00 140.00 108.00 102.45 105.00 138.00 105.00 100.20 100.20 133.60 100.20 118.00 120.00 110.00 91.50 127.00 122.00 117.00 114.00 120.00 117.00 166.00 160.00 100.00 100.00 133.30 100.00
3V66(MHz) 75.30 63.33 86.00 75.33 75.00 73.33 70.00 72.00 68.30 70.00 69.00 70.00 66.80 66.80 66.80 66.80 78.67 80.00 73.33 61.00 84.67 81.33 78.00 76.00 80.00 78.00 83.00 80.00 66.67 66.67 66.65 66.67
PCI(MHz) 37.65 31.67 43.00 37.67 37.50 36.67 35.00 36.00 34.15 35.00 34.50 35.00 33.40 33.40 33.40 33.40 39.33 40.00 36.67 30.50 42.33 40.67 39.00 38.00 40.00 39.00 41.50 40.00 33.33 33.33 33.33 33.33
IOAPIC (MHz) 18.83 15.83 21.50 18.83 18.75 18.33 17.50 18.00 17.08 17.50 17.25 17.50 16.70 16.70 16.70 16.70 19.67 20.00 18.33 15.25 21.17 20.33 19.50 19.00 20.00 19.50 20.75 20.00 16.67 16.67 16.66 16.67
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
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
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Publication Release Date: June 2000 Revision 0.42
W83195BR-S
PRELIMINARY
5.0 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)
SSEL5 SSEL4 SSEL3 SSEL2 SSEL1 SSEL0
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 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 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 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 0 0
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
CPU (MHz) 75.30 95.00 129.00 150.00 150.00 110.00 140.00 144.00 68.30 105.00 138.00 140.00 66.80 100.20 133.60 133.60 157.30 160.00 146.00 122.00 127.00 122.00 117.00 114.00 80.00 78.00 166.00 160.00
SDRAM (MHz) 112.95 95.00 129.00 113.00 150.00 110.00 140.00 108.00 102.45 105.00 138.00 105.00 100.20 100.20 133.60 100.20 118.00 120.00 110.00 91.50 127.00 122.00 117.00 114.00 120.00 117.00 166.00 160.00
3V66 (MHz) 75.30 63.33 86.00 75.33 75.00 73.33 70.00 72.00 68.30 70.00 69.00 70.00 66.80 66.80 66.80 66.80 78.67 80.00 73.33 61.00 84.67 81.33 78.00 76.00 80.00 78.00 83.00 80.00
PCI(MHz) 37.65 31.67 43.00 37.67 37.50 36.67 35.00 36.00 34.15 35.00 34.50 35.00 33.40 33.40 33.40 33.40 39.33 40.00 36.67 30.50 42.33 40.67 39.00 38.00 40.00 39.00 41.50 40.00
IOAPIC (MHz) 18.83 15.83 21.50 18.83 18.75 18.33 17.50 18.00 17.08 17.50 17.25 17.50 16.70 16.70 16.70 16.70 19.67 20.00 18.33 15.25 21.17 20.33 19.50 19.00 20.00 19.50 20.75 20.00
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Publication Release Date: June 2000 Revision 0.42
W83195BR-S
PRELIMINARY
0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 0 0 1 1 0 1 0 1 66.60 100.00 133.30 133.30 CPU (MHz) 136.00 138.00 139.00 141.00 142.00 142.00 143.00 143.00 144.00 144.00 146.00 146.00 147.00 147.00 148.00 148.00 149.00 152.00 153.00 156.00 157.00 158.00 159.00 160.00 162.00 164.00 170.00 175.00 180.00 185.00 190.00 200.40 100.00 100.00 133.30 100.00 SDRAM (MHz) 102.00 138.00 104.25 105.75 142.00 106.50 143.00 107.25 144.00 108.00 146.00 109.50 147.00 110.25 148.00 111.00 111.75 152.00 114.75 156.00 117.75 158.00 119.25 160.00 121.50 123.00 127.50 116.67 120.00 185.00 126.67 133.60 66.67 66.67 66.65 66.67 3V66 (MHz) 68.00 69.00 69.50 70.50 71.00 71.00 71.50 71.50 72.00 72.00 73.00 73.00 73.50 73.50 74.00 74.00 74.50 76.00 76.50 78.00 78.50 79.00 79.50 80.00 81.00 82.00 85.00 77.78 80.00 61.67 63.33 66.80 33.33 33.33 33.33 33.33 PCI(MHz) 34.00 34.50 34.75 35.25 35.50 35.50 35.75 35.75 36.00 36.00 36.50 36.50 36.75 36.75 37.00 37.00 37.25 38.00 38.25 39.00 39.25 39.50 39.75 40.00 40.50 41.00 42.50 38.89 40.00 30.83 31.67 33.40 16.67 16.67 16.66 16.67 IOAPIC (MHz) 17.00 17.25 17.38 17.63 17.75 17.75 17.88 17.88 18.00 18.00 18.25 18.25 18.38 18.38 18.50 18.50 18.63 19.00 19.13 19.50 19.63 19.75 19.88 20.00 20.25 20.50 21.25 19.44 20.00 15.42 15.83 16.70
SSEL5 SSEL4 SSEL3 SSEL2 SSEL1 SSEL0
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
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
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
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Publication Release Date: June 2000 Revision 0.42
W83195BR-S
PRELIMINARY
5.1 Register 0: Control Register
Bit 7 6 5 4 3 2 @PowerUp X X X X X 1 Pin Description FS0# FS1# FS2# FS3# FS4# If Reg0-bit7=1 0 = 0.5% Center type Spread Spectrum Modulation 1 = 0.25% Center type Spread Spectrum Modulation If Reg0-bit7=0 0 = 0 ~ - 1 % Down type Spread Spectrum Modulation 1 = 0 ~ - 0.5% Down type Spread Spectrum Modulation 0 = Normal 1 = Spread Spectrum enabled 1=CENTER SPREAD 0=DOWN SPREAD
1 0
0 1
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5.2 Register 1 : SDRAM Register (1 = Active, 0 = Inactive)
Bit 7 6 5 4 3 2 1 0 @PowerUp 1 1 1 1 1 1 1 1 Pin 38 41 42 43 44 47 48 49 Description SDRAM7 (Active / Inactive) SDRAM6 (Active / Inactive) SDRAM5 (Active / Inactive) SDRAM4 (Active / Inactive) SDRAM3 (Active / Inactive) SDRAM2 (Active / Inactive) SDRAM1 (Active / Inactive) SDRAM0 (Active / Inactive)
5.3 Register 2: PCI Clock Register (1 = Active, 0 = Inactive)
Bit 7 6 5 4 3 2 1 0 @PowerUp 1 1 1 1 1 1 1 1 Pin 20 19 18 16 15 13 12 11 Description PCICLK7 (Active / Inactive) PCICLK6 (Active / Inactive) PCICLK5 (Active / Inactive) PCICLK4 (Active / Inactive) PCICLK3 (Active / Inactive) PCICLK2 (Active / Inactive) PCICLK1 (Active / Inactive) PCICLK0 (Active / Inactive)
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Publication Release Date: June 2000 Revision 0.42
W83195BR-S
PRELIMINARY 5.4 Register 3: Control Register (1 = Active, 0 = Inactive)
Bit 7 6 5 4 3 2 1 0 @PowerUp 1 1 1 1 1 1 1 1 Pin 9 8 7 31 32 35 36 37 3V66_2(Active/Inactive) 3V66_1(Active / Inactive) 3V66_0(Active / Inactive) SDRAM12 (Active / Inactive) SDRAM11 (Active / Inactive) SDRAM10 (Active / Inactive) SDRAM9 (Active / Inactive) SDRAM8 (Active / Inactive) Description
5.5 Register 4: Control Register (1 = Active, 0 = Inactive)
Bit 7 6 5 4 3 2 1 0 @PowerUp 0 0 0 0 0 0 0 0 Pin Description SSEL3 (Frequency table selection by software via I2C ) SSEL2 ( Frequency table selection by software via I2C) SSEL1 ( Frequency table selection by software via I2C) SSEL0 ( Frequency table selection by software via I2C) 0 = Selection by hardware 1 = Selection by software I2C - Bit (1,2, 4:6) SSEL4 (Frequency table selection by software via I2C ) SSEL5 (Frequency table selection by software via I2C ) 0 = Running 1 = Tristate all outputs
5.6 Register 5: Skew Register
Bit 7 6 5 4 3 2 1 0 @PowerUp 1 0 0 1 0 0 1 1 Pin 51 52 Description CSkew2 (CPU to SDRAM skew program bit) CSkew1 (CPU to SDRAM skew program bit) CSkew0 (CPU to SDRAM skew program bit) CASkew2 (CPU to 3V66 skew program bit) CASkew1 (CPU to 3V66 skew program bit) CASkew0 (CPU to 3V66 skew program bit) CPUCLK1(Active/Inactive) CPUCLK0(Active / Inactive)
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Publication Release Date: June 2000 Revision 0.42
W83195BR-S
PRELIMINARY 5.7 Register 6~10: Step-less M/N control registers 5.12 Register 11: Winbond Chip ID Register (Read Only)
Bit 7 6 5 4 3 2 1 0 @PowerUp 0 1 0 1 0 0 0 0 Pin Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID Description
5.13 Register 12: Winbond Chip ID Register (Read Only)
Bit 7 6 5 4 3 2 1 0 @PowerUp 0 0 1 0 0 0 1 0 Pin Description Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Chip ID Winbond Version ID Winbond Version ID Winbond Version ID
Bit6 DS3 0 0 0 0 0 0 0 0 1 1
Register10 Bit3-6 Bit 5 Bit 4 DS2 DS1 0 0 0 0 0 1 0 1 1 0 1 0 1 1 1 1 0 x 1 x
Ratio Bit 3 DS0 0 1 0 1 0 1 0 1 x x CPU 4 3 2 2 6 3 6 4 2 2 SDRAM 4 3 3 2 4 4 3 3 2 4 3V66 6 6 6 6 6 6 6 6 4 6
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Publication Release Date: June 2000 Revision 0.42
W83195BR-S
PRELIMINARY 6.0 ORDERING INFORMATION
Part Number W83195BR-S Package Type 56 PIN SSOP Production Flow Commercial, 0C to +70C
7.0 HOW TO READ THE TOP MARKING
W83195BR-S 28051234 814GAB
1st line: Winbond logo and the type number: W83195BR-S 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.
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Publication Release Date: June 2000 Revision 0.42
W83195BR-S
PRELIMINARY 8.0 PACKAGE DRAWING AND DIMENSIONS
.035 .045
DIMENSION IN MM
.045 .055 0.40/0.50 DIA E END VIEW
DIMENSION IN INCH
SYMBOL
HE
A A1 A2 b c D HE E e L L1 Y
TOP VIEW
SEE DETAIL "A" c
MIN. 2.41 0.20 2.24 0.20 0.13 18.2 9 10.16 7.42 0.51 0.61
NOM MAX. MIN. NOM 0.095 0.101 2.57 2.79 0.30 0.41 0.008 0.012 0.088 0.090 2.34 2.29 0.25 0.34 0.008 0.010 0.25 18.42 18.54 10.31 10.41 7.52 0.64 0.81 1.40 7.59 0.76 1.02 0.08 8 0.005 0.720 0.725 0.400 0.406 0.292 0.296 0.020 0.025 0.024 0.032 0.055 0
MAX. 0.110 0.016 0.092 0.0135 0.010 0.730 0.410 0.299 0.030 0.040 0.003 8
D
A2 Y SEATING PLANE e b SIDE VIEW A1 PARTING LINE c
A
0
L L1 DETAIL"A"
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.
Rm. 803, World Trade Square, Tower II 123 Hoi Bun Rd., Kwun Tong Kowloon, Hong Kong TEL: 852-27516023-7 FAX: 852-27552064
Winbond Electronics (North America) Corp.
2730 Orchard Parkway San Jose, CA 95134 U.S.A. TEL: 1-408-9436666 FAX: 1-408-9436668
Taipei Office
11F, No. 115, Sec. 3, Min-Sheng East Rd. Taipei, Taiwan TEL: 886-2-7190505 FAX: 886-2-7197502 TLX: 16485 WINTPE
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.
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Publication Release Date: June 2000 Revision 0.42

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