w83195bg-202 Winbond Electronics Corp America, w83195bg-202 Datasheet - Page 3

• Manufacturer Part Number: w83195bg-202
• Description: Clock For Via Chipsets
• Manufacturer: Winbond Electronics Corp America

Table of Content-
1.
2.
3.
4.
5.
6.
7.
GENERAL DESCRIPTION ......................................................................................................... 1
PRODUCT FEATURES.............................................................................................................. 1
PIN CONFIGURATION............................................................................................................... 2
BLOCK DIAGRAM...................................................................................................................... 2
PIN DESCRIPTION .................................................................................................................... 3
5.1
5.2
5.3
5.4
5.5
5.6
FREQUENCY SELECTION BY HARDWARE OR SOFTWARE................................................ 6
I
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
2
C CONTROL AND STATUS REGISTERS............................................................................... 7
Crystal I/O.................................................................................................................................3
CPU, PCIEX, AGP, and PCI Clock Outputs ...........................................................................3
Fixed Frequency Outputs.........................................................................................................4
I
Power Management Pins.........................................................................................................5
Power Pins................................................................................................................................5
Register 0: Frequency Select Register (Default = 10h) ..........................................................7
Register 1: CPU Clock Control (1 = Enable, 0 = Stopped) (Default: E2h) .............................7
Register 2: PCI Clock Control (1 = Enable, 0 = Stopped) (Default: FFh)...............................8
Register 3: AGP/PCI Clock Control (1 = Enable, 0 = Stopped) (Default: F3h) ......................8
Register 4: 24_48MHz, 48MHz, REF Control (1 = Enable, 0 = Stopped) (Default: FFh)......8
Register 5: Watchdog Control (Default: 82h) ..........................................................................9
Register 6: PCIEX Control (1 = Enable, 0 = Stopped) (Default: FEh)....................................9
Register 7: Winbond Chip ID (Default: 40h)..........................................................................10
Register 8: M/N Program (Default: D0h) ...............................................................................10
Register 9: M/N Program Register (Default: 7Ah).................................................................10
Register 10: Reserved (Default: 03h) ....................................................................................11
Register 11: Spread Spectrum Programming (Default: 0Bh) ...............................................11
Register 12: Divisor Control (Default: 72h)............................................................................11
Register 13: Step-less Enable Control (Default: 3Fh)...........................................................12
Register 14: Control (Default: 10h) ........................................................................................12
Register 15: SST Control (Default: E9h) ...............................................................................13
Register 16: Skew Control (Default: E0h) .............................................................................13
Register 17: Slew rate Control (Default: 03h)........................................................................14
Register 18: Reserved (Default: 7Ah)....................................................................................14
Register 19: Control (Default: 22h) ........................................................................................14
Register 20: Watch dog timer (Default: 88h).........................................................................15
CLOCK GEN. FOR AMD K8 SYSTEM SERIES CHIPSET
2
C Control Interface .................................................................................................................5
W83195BR-202/W83195BG-202
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