w83194br-b Winbond Electronics Corp America, w83194br-b Datasheet - Page 13

• Manufacturer Part Number: w83194br-b
• Description: Winbond Clock Generator For Intel P4 845 Series Chipset
• Manufacturer: Winbond Electronics Corp America

7. I
(The register No. Is increased by 1 if use byte data read/write protocol)
7.1
7.2
BIT
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
2
Register 0: Frequency Select Register (Default = 0)
Register 1: CPU Clock Register (1 = Enable, 0 = Stopped)
C CONTROL AND STATUS REGISTERS
EN_SAFE_FREQ
EN_SPSP
EN_SSEL
SSEL [4]
SSEL [3]
SSEL [2]
SSEL [1]
SSEL [0]
PIN NO.
NAME
47, 46
44, 43
40, 39
CLOCK GEN. FOR INTEL P4 845 SERIES CHIPSET
-
-
-
-
-
PWD
PWD
X
X
X
X
X
0
0
0
0
0
0
0
0
1
1
1
Enable Spread Spectrum in the frequency table.
0 = Normal
1 = Spread Spectrum enabled
Frequency selection by software via I
Enable software program FS [4:0].
0 = Select frequency by hardware.
1= Select frequency by software I
Enable reload safe frequency when the watchdog is timeout.
0 = reload the FS [4:0] latched pins when watchdog time out.
1 = reload the safe frequency bit defined at Register 5 bit 4~0.
CPUCLKT2 / C2
CPUCLKT1 / C1
CPUCLKT0 / C0
FS [4] Read back.
FS [3] Read back
FS [2] Read back
FS [1] Read back
FS [0] Read back
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W83194BR-B/W83194BG-B
DESCRIPTION
DESCRIPTION
Publication Release Date: October 2006
2
C - Bit 6 ~ 2.
2
C.
Revision 3.1