W83194BR-703 WINBOND [Winbond], W83194BR-703 Datasheet - Page 3

• Manufacturer Part Number: W83194BR-703
• Description: STEPLESS CLOCK FOR SIS 741 CHIPSET
• Manufacturer: WINBOND [Winbond]

Table of Content-
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2.
3.
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6.
7.
GENERAL DESCRIPTION ......................................................................................................... 1
PRODUCT FEATURES .............................................................................................................. 1
PIN CONFIGURATION ............................................................................................................... 2
BLOCK DIAGRAM ...................................................................................................................... 3
PIN DESCRIPTION..................................................................................................................... 4
5.1
5.2
5.3
5.4
5.5
5.6
FREQUENCY SELECTION BY HARDWARE OR SOFTWARE ................................................ 7
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
7.22
2
C CONTROL AND STATUS REGISTERS............................................................................... 8
Crystal I/O.................................................................................................................................4
CPU, AGP, ZCLK and PCI, IOAPIC Clock Outputs ...............................................................4
Fixed Frequency Outputs.........................................................................................................5
I2C Control Interface ................................................................................................................5
Power Management Pins.........................................................................................................5
Power Pins................................................................................................................................6
Register 0: Frequency Select (Default = 20h) .........................................................................8
Register 1: CPU Control (1 = Enable, 0 = Stopped) (Default: ECh).......................................8
Register 2: PCI, ZCLK Control (1 = Enable, 0 = Stopped) (Default: FFh) .............................9
Register 3: PCI, AGP Control (1 = Enable, 0 = Stopped) (Default: FFh) ...............................9
Register 4: 48MHz, REF, SRC Control (1 = Enable, 0 = Stopped) (Default: FFh)................9
Register 5: Watchdog Control (Default: 04h) ........................................................................10
Register 6: Skew Control (Default: 25h) ................................................................................10
Register 7: Winbond Chip ID (Default: 77h) (Read only)......................................................11
Register 8: M/N (Default: 90h) ...............................................................................................11
Register 9: N (Default: BBh)...................................................................................................11
Register 10: N & N3 (Default: 3Bh)........................................................................................12
Register 11: Spread Spectrum Programming (Default: 0Eh) ...............................................12
Register 12: Divisor and Step-less Enable Control (Default: 89h) .......................................12
Register 13: M/N Control (Default: 0Ah)................................................................................13
Register 14: Spread Spectrum Control (Default: 10h) ..........................................................14
Register 15: Spread Spectrum type Control (Default: 2Ch) .................................................14
Register 16: Skew Control (Default: 24h)..............................................................................15
Register 17: Slew rate Control (Default: 00h)........................................................................15
Register 18: Slew rate Control (Default: 00h)........................................................................15
Register 19: Slew rate Control (Default: D2h) .......................................................................16
Register 20: SRC select Control (Default: 88h) ....................................................................16
Register 21: Fix Mode Control (Default: 00h)........................................................................17
W83194BR-703/W83194BG-703
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