w83195bg-341 Winbond Electronics Corp America, w83195bg-341 Datasheet - Page 3

• Manufacturer Part Number: w83195bg-341
• Description: Winbond Clock Generator For Via P4/kt Series Chipset
• Manufacturer: Winbond Electronics Corp America

Table of Content-
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GENERAL DESCRIPTION ......................................................................................................... 1
PRODUCT FEATURES .............................................................................................................. 1
PIN CONFIGURATION ............................................................................................................... 2
BLOCK DIAGRAM ...................................................................................................................... 2
PIN DESCRIPTION..................................................................................................................... 3
FREQUENCY SELECTION BY HARDWARE OR SOFTWARE ................................................ 7
I2C CONTROL AND STATUS REGISTERS .............................................................................. 8
5.1
5.2
5.3
5.4
5.5
5.6
5.7
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
7.16
7.17
7.18
7.19
7.20
7.21
Crystal I/O.................................................................................................................................3
CPU, AGP, PCI Clock Outputs................................................................................................3
Fixed Frequency Outputs.........................................................................................................4
DRAM Buffer ............................................................................................................................5
I2C Control Interface ................................................................................................................5
Output Control Pins ..................................................................................................................5
Power an GND Pins .................................................................................................................6
Register 0: Frequency Select (Default =08h) ..........................................................................8
Register 1: SRC/CPU Clock (1 = Enable, 0 = Disable) (Default: A1h)...................................8
Register 2: PCI Clock (1 = Enable, 0 = Disable) (Default: FEh) .............................................9
Register 3: REF, 24_48,48,AGP Clock (1 = Enable, 0 = Disable) (Default: F7h)..................9
Register 4,5 Reserved .............................................................................................................9
Register 6: M/N Program (Default: 8Bh) .................................................................................9
Register 7: M/N Program (Default: 2Fh)................................................................................10
Register 8: Spread Spectrum Program (Default: 1Fh)..........................................................10
Register 9: Divider Ratio (Default: 03h).................................................................................10
Register 10: Control (Default: 0Ah)........................................................................................11
Register 11: Control (Default: E7h)........................................................................................12
Register 12: Control (Default: 3Ch) .......................................................................................12
Register 13: Control (Default: 24h) ........................................................................................13
Register 14: Control (Default: 56h) ........................................................................................13
Register 15: Slew Rate Control (Default: 55h) ......................................................................13
Register 16: DRAM Buffer Control (1 = Enable, 0 = Disable) (Default: 7Fh).......................14
Register 17: Slew Rate Control (Default: CFh) .....................................................................14
Register 18: M/N Time & Type Control (Default: 5Bh)..........................................................14
Register 19: Reserved ...........................................................................................................15
Register 20: Winbond Chip ID – (Ready Only) (Default: 61h)..............................................15
Register 21: Winbond Chip ID – (Ready Only) (Default: 50h)..............................................15
CLOCK GEN. FOR VIA P4/KT SERIES CHIPSET
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