w83194br-603 Winbond Electronics Corp America, w83194br-603 Datasheet - Page 3

• Manufacturer Part Number: w83194br-603
• Description: Winbond Clock Generator For Intel P4 Springdale 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
5.1
5.2
5.3
5.4
5.5
5.6
5.7
FREQUENCY SELECTION BY HARDWARE OR SOFTWARE ................................................ 6
I2C CONTROL AND STATUS REGISTERS .............................................................................. 7
7.1
7.2
7.3
7.4
7.5
(Default: BFh).........................................................................................................................................8
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
CLOCK GEN. FOR INTEL P4 SPRINGDALE/PRESCOTT SERIES CHIPSET
Crystal I/O.................................................................................................................................3
CPU, SRC, 3V66 and PCI Clock Outputs...............................................................................3
Fixed Frequency Outputs.........................................................................................................4
I2C Control Interface ................................................................................................................4
Power Management Pins.........................................................................................................5
IREF selects Function ..............................................................................................................5
Power Pins................................................................................................................................5
Register 0: Frequency Select Register (Default = 10h) ..........................................................7
Register 1: CPU Clock Register (1 = Enable, 0 = Stopped) (Default: E2h) ...........................7
Register 2: PCI Clock Register (1 = Enable, 0 = Stopped) (Default: FFh).............................8
Register 3: PCI, 3V66 Clock Register (1 = Enable, 0 = Stopped) (Default: EFh)..................8
Register 4: 24_48MHz, 48MHz, REF, SRC Control Register (1 = Enable, 0 = Stopped)
Register 5: Watchdog Control Register (Default: 02h)............................................................9
Register 6: Winbond Chip ID Register (Default: 60h) (Read Only) ........................................9
Register 7: Winbond Chip ID Register (Default: 70h) (Read Only) ......................................10
Register 8: M/N Program Register (Default: 90h) .................................................................10
Register 9: M/N Program Register (Default: 7Ah).................................................................10
Register 10: M/N Program Register (Default: BBh) ..............................................................11
Register 11: Spread Spectrum Programming Register (Default: 0Bh) ................................11
Register 12: Divisor and Step-less Enable Control Register: (Default: FBh) .......................12
Register 13: Divisor and Step-less Enable Control Register (Default: 0Fh) ........................12
Register 14: Control Register (Default: 0Ah).........................................................................13
Register 15: Control Register (Default: 2Ch).........................................................................13
Register 16: Control Register (Default: 24h) .........................................................................14
Register 17: Slew rate Control Register (Default: 00h).........................................................14
Register 18: Slew rate Control Register (Default: 00h).........................................................14
Register 19: Control Register (Default: D2h).........................................................................15
Register 20: Watch dog timer Register (Default: 88h) ..........................................................15
W83194BR-603/W83194BG-603
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