ICS950703 Datasheet, PDF (18/24 Pages) Integrated Circuit Systems – PROGRAMMABLE TIMING CONTROL HUB FOR P4

Integrated
Circuit
Systems, Inc.
ICS950703
I²C Table: Group Skew Control Register
Byte 21
Pin #
Name
Bit 7
-
3V66Skw1
Bit 6
-
3V66Skw0
Bit 5
-
Reserved
Bit 4
-
Reserved
Bit 3
-
3V66Skw1
Bit 2
-
3V66Skw0
Bit 1
-
Reserved
Bit 0
-
Reserved
Control Function
CPU to 3V66(3:2)
Skew Control
Reserved
Reserved
CPU to 3V66(1:0)
Skew Control
Reserved
Reserved
I²C Table: Slew Rate Control Register
Byte 22
Pin #
Name
Bit 7
-
48MHzSlw1
Bit 6
-
48MHzSlw0
Bit 5
-
48MHzSlw1
Bit 4
-
48MHzSlw0
Bit 3
-
3V66Slw1
Bit 2
-
3V66Slw0
Bit 1
-
3V66Slw1
Bit 0
-
3V66Slw0
Control Function
48MHz_0 Slew Rate
Control
48MHz_1 Slew Rate
Control
3V66 (0) Slew Rate
Control
3V66 (3:1) Slew
Rate Control
I²C Table: Slew Rate Control Register
Byte 23
Pin #
Name
Bit 7
-
Reserved
Bit 6
-
Reserved
Bit 5
-
PCISlw1
Bit 4
-
PCISlw0
Bit 3
-
PCISlw1
Bit 2
-
PCISlw0
Bit 1
-
PCISlw1
Bit 0
-
PCISlw0
Control Function
Reserved
Reserved
PCI (9:7), (5:2) Slew
Rate Control
PCI (6) Slew Rate
Control
PCI (1:0) Slew Rate
Control
I²C Table: Slew Rate Control Register
Byte 24
Pin #
Name
Bit 7
-
Reserved
Bit 6
-
Reserved
Bit 5
-
Reserved
Bit 4
-
Reserved
Bit 3
-
REFSlw1
Bit 2
-
REFSlw0
Bit 1
-
REFSlw1
Bit 0
-
REFSlw0
Control Function
Reserved
Reserved
Reserved
Reserved
REF1 Slew Rate
Control
REF0 Slew Rate
Control
Type
RW
RW
RW
RW
RW
RW
RW
RW
Type
RW
RW
RW
RW
RW
RW
RW
RW
Type
RW
RW
RW
RW
RW
RW
RW
RW
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
1
See Table 5: 2-bit Skew
Control Table
-
-
-
-
See Table 5: 2-bit Skew
Control Table
-
-
-
-
PWD
0
0
0
0
0
0
0
0
0
1
PWD
-
-
1
-
-
0
-
-
1
-
-
0
-
-
1
-
-
0
-
-
1
-
-
0
0
1
PWD
-
-
1
-
-
0
-
-
1
-
-
0
-
-
1
-
-
0
-
-
1
-
-
0
0
1
PWD
-
-
0
-
-
0
-
-
0
-
-
0
-
-
1
-
-
0
-
-
1
-
-
0
0690D—05/14/04
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