w83194br-372 Winbond Electronics Corp America, w83194br-372 Datasheet - Page 9

• Manufacturer Part Number: w83194br-372
• Description: Clock Generator For Sis 746/748 Chipsets
• Manufacturer: Winbond Electronics Corp America

7. I
7.1 Register 0: Frequency Select (Default = 40h)
7.2 Register 1: CPU Clock (1 = Enable, 0 = Stopped) (Default: 68h)
7.3 Register 2: PCI Clock (1 = Enable, 0 = Stopped) (Default: FFh)
BIT
BIT
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
2
C CONTROL AND STATUS REGISTERS
EN_SPSP
EN_SSEL
Reserved
SSEL [4]
SSEL [3]
SSEL [2]
SSEL [1]
SSEL [0]
Tri-state
PIN NO
PIN NO
NAME
40,39
15
14
15
14
23
22
21
20
17
16
43
3
2
-
PWD
PWD
PWD
1
1
1
1
1
1
1
1
X
X
X
X
X
0
1
1
0
1
0
0
0
0
0
0
PCI_F1 output control
PCI_F0 output control
PCI5 output control
PCI4 output control
PCI3 output control
PCI2 output control
PCI1 output control
PCI0 output control
Tri-state all output if set 1
CPUT1 output control
CPUT0 / C0 output control
Default: 0 (Read only)
Power on latched value of FS3 pin. Default: 1 (Read only)
Power on latched value of FS2 pin. Default: 0 (Read only)
Power on latched value of FS1 pin. Default: 0 (Read only)
Power on latched value of FS0 pin. Default: 0 (Read only)
Frequency selection by software via I
Enable software table selection FS [4:0].
0 = Hardware table setting (Jump mode).
1 = Software table setting through Bit7~3. (Jump less mode)
Enable spread spectrum mode under clock output.
0 = Spread Spectrum mode disable
1 = Spread Spectrum mode enable
Reserved
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DESCRIPTION
DESCRIPTION
DESCRIPTION
2
C
W83194BR-372