ICS954101 Datasheet, PDF (13/16 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for Desktop P4 Systems

Integrated
Circuit
Systems, Inc.
ICS954101
I²C Table: Output Control Register
Byte 4
Pin #
Bit 7
Bit 6
14,15
Bit 5
10
Bit 4
9
Bit 3
8
Bit 2
Bit 1
Bit 0
Name
DOT_96MHz
PCI_F2
PCI_F1
PCI_F0
I²C Table: Output Control Register
Byte 5
Pin #
Name
19,20,22,23,
Bit 7 24,25,26,27,30,31,
SRC Stop Drive Mode
32,33,35,36
Bit 6
Bit 5
Bit 4
19,20,22,23,
Bit 3 24,25,26,27,30,31,
SRC PD Drive Mode
32,33,35,36
Bit 2
35,36
CPUCLK_ITP
Bit 1
40,41
CPUCLK1
Bit 0
43,44
CPUCLK0
I²C Table: Output Control Register
Byte 6
Pin #
Name
Bit 7
-
Test Mode Selection
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
-
-
52
17,18,19,20,22,23,
24,25,26,27,30,31,
32,33,35,36
54,55,56,3,4,5,8,9,
10
-
-
-
Test Clock Mode Entry
REFOUT Strength
PCI/SRC_STOP
FS_C
FS_B
FS_A
I²C Table: Vendor & Revision ID Register
Byte 7
Pin #
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Name
RID3
RID2
RID1
RID0
VID3
VID2
VID1
VID0
Control Function
RESERVED
Driven in PD
Free-Running
Control
not affected by
RESERVED
RESERVED
RESERVED
Type
RW
RW
RW
RW
0
Driven
Free-Running
Free-Running
Free-Running
1
Hi-Z
Stoppable
Stoppable
Stoppable
PWD
1
1
1
1
1
1
1
1
Control Function Type
Drive Mode in
PCI_Stop
RW
RESERVED
RESERVED
RESERVED
Drive Mode in PD
RW
Drive Mode in PD
RW
Drive mode in PD
RW
Drive mode in PD
RW
0
Driven
Driven
Driven
Driven
Driven
1
PWD
Hi-Z
0
0
0
0
Hi-Z
0
Hi-Z
0
Hi-Z
0
Hi-Z
0
Control Function
Test Mode Selection
Test Mode
RESERVED
Strength Prog
Type
RW
RW
RW
Stop all PCI and
SRC clocks
RW
readback
R
readback
R
readback
R
0
1
PWD
Hi-Z
REF/N
0
Disable
Enable
0
0
1X
2X
1
Enabled, all Disabled, all
stoppable PCI stoppable PCI
and SRC clocks and SRC clocks
1
are stopped. are running
-
-
LATCHED
-
-
LATCHED
-
-
LATCHED
Control Function Type
0
R
-
REVISION ID
R
R
-
-
R
-
R
-
VENDOR ID
R
R
-
-
R
-
1
PWD
-
0
-
0
-
0
-
0
-
0
-
0
-
0
-
1
0815D—06/21/04
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