ICS952607 Datasheet, PDF (13/21 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for Next Gen P4 processor

Integrated
Circuit
Systems, Inc.
ICS952607
Advance Information
I²C Table: Output Divider Control Register
Byte 16
Pin #
Name
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Reserved
Reserved
Reserved
Reserved
3V66Div3
3V66Div2
3V66Div1
3V66Div0
Control
Function
Reserved
Reserved
Reserved
Reserved
3V66 Divider Ratio
Programmaing Bits
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
1
-
-
-
-
-
-
-
-
0000:/2 0100:/4 1000:/8 1100:/16
0001:/3 0101:/6 1001:/12 1101:/24
0010:/5 0110:/10 1010:/20 1110:/40
0011:/7 0111:/14 1011:/28 1111:/56
PWD
X
X
X
X
X
X
X
X
I²C Table: Output Divider Control Register
Byte 17
Pin #
Name
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Reserved
3V66INV
SRCINV
CPUINV
Reserved
Reserved
Reserved
Reserved
Control
Function
Reserved
3V66 Phase Invert
SRC Phase Invert
CPU Phase Invert
Reserved
Reserved
Reserved
Reserved
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
-
Default
Default
Default
-
-
-
-
1
-
Inverse
Inverse
Inverse
-
-
-
-
PWD
X
X
X
X
0
0
0
0
I²C Table: Group Skew Control Register
Byte 18
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Pin #
-
-
-
-
-
-
-
-
Name
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Control
Type
0
Function
Reserved
RW
-
Reserved
RW
-
Reserved
RW
-
Reserved
RW
-
Reserved
RW
-
Reserved
RW
-
Reserved
RW
-
Reserved
RW
-
1
PWD
-
0
-
0
-
0
-
0
-
0
-
0
-
0
-
0
I²C Table: Group Skew Control Register
Byte 19
Pin #
Name
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
3V66Skw3
3V66Skw2
3V66Skw1
3V66Skw0
PCISkw3
PCISkw2
PCISkw1
PCISkw0
Control
Function
CPU-3V66 7 Step
Skew Control (ps)
CPU-PCI 7 Step Skew
Control (ps)
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
1
0000:0 0100:150 1000:300 1100:450
0001:N/A 0101:N/A 1001:N/A 1101:600
0010:N/A 0110:N/A 1010:N/A 1110:750
0011:N/A 0111:N/A 1011:N/A 1111:900
0000:0 0100:150 1000:300 1100:450
0001:N/A 0101:N/A 1001:N/A 1101:600
0010:N/A 0110:N/A 1010:N/A 1110:750
0011:N/A 0111:N/A 1011:N/A 1111:900
PWD
0
0
0
0
1
1
0
0
0734—07/16/04
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