ICS932S825 Datasheet, PDF (17/20 Pages) Integrated Circuit Systems – Low Power Clock Chip for Serverworks HT2400 Servers

ICS932S825
SMBus Table: CPU Spread Spectrum Control Register
Byte 18 Pin #
Name
Control Function
Bit 7
-
Reserved
Reserved
Bit 6
-
SSP14
Bit 5
-
SSP13
Bit 4
-
Bit 3
-
Bit 2
-
SSP12
SSP11
SSP10
Spread Spectrum
Programming bit(14:8)
Bit 1
-
SSP9
Bit 0
-
SSP8
Type
0
1
R
-
-
RW
RW _{These Spread Spectrum bits}
RW
in Byte 13 and 14 will
RW
program the spread
RW
RW
pecentage of CPU
RW
PWD
0
X
X
X
X
X
X
X
SMBus Table: Programmable Output Divider Register
Byte 19 Pin #
Name
Control Function
Bit 7
-
Bit 6
-
Bit 5
-
CPUDiv3
CPUDiv2
CPUDiv1
CPU Divider Ratio
Programming Bits
Bit 4
-
CPUDiv0
Bit 3
-
Reserved
Reserved
Bit 2
-
Reserved
Reserved
Bit 1
-
Reserved
Reserved
Bit 0
-
Reserved
Reserved
Type
RW
RW
RW
RW
R
R
R
R
0
1
See CPU Divider Ratios
Table
-
-
-
-
-
-
-
-
PWD
X
X
X
X
0
0
0
0
SMBus Table: Programmable Output Divider Register
Byte 20 Pin #
Name
Control Function
Bit 7
-
Bit 6
-
Bit 5
-
33MHzDiv3
33MHzDiv2
33MHzDiv1
33MHz Divider Ratio
Programming Bits
Bit 4
-
33MHzDiv0
Bit 3
-
Bit 2
-
Bit 1
-
SRC_Div3
SRC_Div2
SRC_Div1
SRC_ Divider Ratio
Programming Bits
Bit 0
-
SRC_Div0
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
1
33MHz Divider Ratio Table
SRC Divider Ratio Table
PWD
X
X
X
X
X
X
X
X
SMBusTable: Reserved Regsiter
Byte 21 is reserved do not write this register!
1276D—10/25/07
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