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ICS952906A Datasheet(PDF) 13 Page - Integrated Circuit Systems

Part # ICS952906A
Description  Programmable Timing Control Hub for Next Gen P4??processor
PDF  23 Pages
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Manufacturer  ICST [Integrated Circuit Systems]
Direct Link  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS952906A Datasheet(HTML) 13 Page - Integrated Circuit Systems

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13
Integrated
Circuit
Systems, Inc.
ICS952906A
1236A—08/06/07
I
2C Table: Output Divider Control Register
Control
Function
Bit 7
25MHz Div3
RW
0000:/2
0100:/4
1000:/8
1100:/16
X
Bit 6
25Mhz Div2
RW
0001:/3
0101:/6
1001:/12
1101:/24
X
Bit 5
25MHz Div1
RW
0010:/5
0110:/10 1010:/20
1110:/40
X
Bit 4
25MHz Div0
RW
0011:/7
0111:/14 1011:/28
1111:/56
X
Bit 3
CPU Div3
RW
0000:/2
0100:/4
1000:/8
1100:/16
X
Bit 2
CPU Div2
RW
0001:/3
0101:/6
1001:/12
1101:/24
X
Bit 1
CPU Div1
RW
0010:/5
0110:/10 1010:/20
1110:/40
X
Bit 0
CPU Div0
RW
0011:/7
0111:/14 1011:/28
1111:/56
X
I
2C Table: Output Divider Control Register
Control
Function
Bit 7
Reserved
RW
X
Bit 6
Reserved
RW
X
Bit 5
Reserved
RW
X
Bit 4
Reserved
RW
X
Bit 3
3V66Div3
RW
0000:/2
0100:/4
1000:/8
1100:/16
X
Bit 2
3V66Div2
RW
0001:/3
0101:/6
1001:/12
1101:/24
X
Bit 1
3V66Div1
RW
0010:/5
0110:/10 1010:/20
1110:/40
X
Bit 0
3V66Div0
RW
0011:/7
0111:/14 1011:/28
1111:/56
X
I
2C Table: Output Divider Control Register
Control
Function
Bit 7
Reserved
Reserved
RW
X
Bit 6
Reserved
Reserved
RW
X
Bit 5
Reserved
Reserved
RW
X
Bit 4
CPUINV
CPU Phase Invert
RW
1
Bit 3
Reserved
Reserved
RW
1
Bit 2
Reserved
Reserved
RW
1
Bit 1
Reserved
Reserved
RW
1
Bit 0
Reserved
Reserved
RW
1
I
2C Table: Group Skew Control Register
Control
Function
Bit 7
Reserved
Reserved
RW
0
Bit 6
Reserved
Reserved
RW
0
Bit 5
Reserved
Reserved
RW
0
Bit 4
Reserved
Reserved
RW
0
Bit 3
Reserved
Reserved
RW
0
Bit 2
Reserved
Reserved
RW
0
Bit 1
Reserved
Reserved
RW
0
Bit 0
Reserved
Reserved
RW
0
--
--
--
--
--
--
--
-
Default
-
Inverse
--
--
--
1
--
--
--
01
Pin #
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PWD
-
Name
Type
0
1
--
Byte 18
PWD
-
Byte 17
Pin #
Name
Type
0
3V66/PCI Divider Ratio
Programming Bits for
Mode 1
-
-
-
PWD
-
Name
Type
0
1
Byte 16
Pin #
-
-
-
-
CPUDivider Ratio
Programming Bits
-
-
-
Reserved
-
PWD
-
25MHz Divider Ratio
Programming Bits
-
-
-
Byte 15
Pin #
Name
Type
-
-
-
-
-
-
-



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