W83194BR-372 데이터 시트보기 (PDF) - Winbond
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W83194BR-372 Datasheet PDF : 24 Pages
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W83194BR-372
7. I2C CONTROL AND STATUS REGISTERS
7.1 Register 0: Frequency Select (Default = 40h)
BIT
NAME
PWD
DESCRIPTION
7
SSEL [4]
0
6
SSEL [3]
1
5
SSEL [2]
0 Frequency selection by software via I2C
4
SSEL [1]
0
3
SSEL [0]
0
Enable software table selection FS [4:0].
2
EN_SSEL
0 0 = Hardware table setting (Jump mode).
1 = Software table setting through Bit7~3. (Jump less mode)
Enable spread spectrum mode under clock output.
1
EN_SPSP
0 0 = Spread Spectrum mode disable
1 = Spread Spectrum mode enable
0
Reserved
0 Reserved
7.2 Register 1: CPU Clock (1 = Enable, 0 = Stopped) (Default: 68h)
BIT
PIN NO PWD
DESCRIPTION
7
Tri-state 0 Tri-state all output if set 1
6
43
1 CPUT1 output control
5
40,39
1 CPUT0 / C0 output control
4
-
X Default: 0 (Read only)
3
15
X Power on latched value of FS3 pin. Default: 1 (Read only)
2
14
X Power on latched value of FS2 pin. Default: 0 (Read only)
1
3
X Power on latched value of FS1 pin. Default: 0 (Read only)
0
2
X Power on latched value of FS0 pin. Default: 0 (Read only)
7.3 Register 2: PCI Clock (1 = Enable, 0 = Stopped) (Default: FFh)
BIT
PIN NO PWD
7
15
1 PCI_F1 output control
6
14
1 PCI_F0 output control
5
23
1 PCI5 output control
4
22
1 PCI4 output control
3
21
1 PCI3 output control
2
20
1 PCI2 output control
1
17
1 PCI1 output control
0
16
1 PCI0 output control
DESCRIPTION
-6-
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