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ICS9LPRS464 Datasheet(PDF) 19 Page - Integrated Device Technology

Part # ICS9LPRS464
Description  System Clock Chip for ATI RS/RD600 series chipsets using AMD CPUs
PDF  23 Pages
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

ICS9LPRS464 Datasheet(HTML) 19 Page - Integrated Device Technology

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ICS9LPRS464
System Clock Chip for ATI RS/RD600 series chipsets using AMD CPUss
IDTTM/ICSTM
System Clock Chip for ATI RS/RD600 series chipsets using AMD CPUs
1377A—04/07/08
SMBus Table: ATIG PLL Spread Spectrum Control Register
Byte 18
Pin #
Name
Control Function
Type
0
1
PWD
Bit 7
0
Bit 6
-
SSP14
RW
X
Bit 5
-
SSP13
RW
X
Bit 4
-
SSP12
RW
X
Bit 3
-
SSP11
RW
X
Bit 2
-
SSP10
RW
X
Bit 1
-
SSP9
RW
X
Bit 0
-
SSP8
RW
X
SMBus Table: CPU and ATIG Divider Ratio Programming Bits Select Register
Byte 19
Pin #
Name
Control Function
Type
0
1
PWD
Bit 7
-CPU_Div3
RW
X
Bit 6
-CPU_Div2
RW
X
Bit 5
-CPU_Div1
RW
X
Bit 4
-CPU_Div0
RW
X
Bit 3
-
ATIG_Div3
RW
X
Bit 2
-
ATIG_Div2
RW
X
Bit 1
-
ATIG_Div1
RW
X
Bit 0
-
ATIG_Div0
RW
X
SMBus Table: HTT Divider Ratio Programming Bits Select Register
Byte 20
Pin #
Name
Control Function
Type
0
1
PWD
Bit 7
0
Bit 6
0
Bit 5
0
Bit 4
0
Bit 3
-HTT_Div3
RW
X
Bit 2
-HTT_Div2
RW
X
Bit 1
-HTT_Div1
RW
X
Bit 0
-HTT_Div0
RW
X
HTT_Divider Ratio
Programming Bits
See Table 6:
HTT Divider Ratios
Reserved
See Table 4:
CPU Divider Ratios
ATIG_Divider Ratio
Programming Bits
Reserved
Reserved
Reserved
Spread Spectrum Programming
b(14:8)
These Spread Spectrum bits
in Byte 19 and 20 will program
the spread pecentage. It is
recommended to use ICS
Spread % table for spread
programming.
CPU_Divider Ratio
Programming Bits
Reserved
See Table 5:
ATIG Divider Ratios



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