W83195WG-413 Datasheet, PDF (18/27 Pages) Winbond – Winbond Clock Generator

1 Reserved
0 Reserved
W83195WG-413/W83195CG-413
STEPLESS FOR ATI P4 CLOCK GENERATOR
0
0
7.17 Register 16: ( Default : 24h )
BIT
AFFECTED PIN/
FUNCTION NAME(S)
PWD
7 INV_SRC
0
6 INV_PCI
0
5 CSKEW<2>
1
4 CSKEW<1>
0
3 CSKEW<0>
0
2 PSKEW<2>
1
1 PSKEW<1>
0
0 PSKEW<0>
0
FUNCTION DESCRIPTION
Invert the SRC phase
0: Default
1: Inverse
Invert the HTT & PCI phase
0: Default
1: Inverse
CPUCLKT1 to CPUCLKT0 skew control
Skew resolution is 300ps
The decision of skew direction is same as
CSKEW<2:0> setting
CPU1 to PCI skew control
Skew resolution is 300ps
The decision of skew direction is same as
PSKEW<2:0> setting
TYPE
R/W
R/W
R/W
R/W
7.18 Register 17: Reserved ( Default : 0Fh )
7.19 Register 18: Reserved ( Default : 7Ah )
7.20 Register 19: ( Default : 04h )
BIT
AFFECTED PIN/
FUNCTION NAME(S)
PWD
7 SRC_FS<4>
0
6 SRC_FS<3>
0
5 SRC_FS<2>
0
4 SRC_FS<1>
0
3 SRC_FS<0>
0
2 CENTERSKEW<2>
1
1 CENTERSKEW<1>
0
0 CENTERSKEW<0>
0
FUNCTION DESCRIPTION
SRC frequency table. See Table-3.
SRC_FS<4> also is spread spectrum enable
bit.
CPU1 center skew control
Skew resolution is 300ps
The decision of skew direction is same as
CENTERSKEW<2:0> setting
TYPE
R/W
R/W
R/W
R/W
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Publication Release Date: Feb 2006
Revision 0.6