ICS952011 Datasheet, PDF (13/25 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for P4 processor

Integrated
Circuit
Systems, Inc.
ICS952011
I²C Table: Reserved Register
Byte 3
Pin #
Bit 7
-
Bit 6
-
Bit 5
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Name
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
I²C Table: Frequency Select Register
Byte 4
Pin #
Name
Bit 7
-
FS3
Bit 6
-
FS2
Bit 5
-
FS1
Bit 4
-
FS0
Bit 3
-
FS Source
Bit 2
-
Bit 1
-
Bit 0
-
FS4
SS_EN
Outputs
Control
Function
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Type
RW
RW
RW
RW
RW
RW
RW
RW
Control
Function
Freq Select Bit 7
Freq Select Bit 6
Freq Select Bit 5
Freq Select Bit 4
Frequency HW/IIC Select
Freq Select Bit 2
Spread Enable
Output Control
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
1
PWD
-
-
1
-
-
1
-
-
1
-
-
1
-
-
1
-
-
1
-
-
1
-
-
1
0
1
See Table1 : Quad Rom
Frequency Selection Table
Latch Input
IIC
See Table1
OFF
ON
Running
Tri-state
PWD
0
0
0
0
0
0
1
0
I²C Table: Read Back Register
Byte 5
Pin #
Name
Bit 7
-
WDHRB
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
WDSRB
MULTISEL
FS4RB
FS3RB
FS2RB
FS1RB
FS0RB
Control
Function
WD Hard Alarm Status
Read back
WD Soft Alarm Status
Read back
Multisel Read back
FS4 Read back
FS3 Read back
FS2 Read back
FS1 Read back
FS0 Read back
Type
R
R
R
R
R
R
R
R
0
Normal
Normal
-
-
-
-
-
-
1
Alarm
Alarm
-
-
-
-
-
-
PWD
X
X
X
X
X
X
X
X
I²C Table: Output Control Register
Byte 6
Pin #
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
10
9
14
15
40, 39
44, 43
40, 39
44, 43
ZCLK_1
ZCLK_0
PCI_F0
PCI_F1
CPUT0/C0
CPUT1/C1
CPUT0/C0
CPUT1/C1
Control
Function
Output Control
Output Control
PCI_STOP# Control
PCI_STOP# Control
CPU_STOP# Control
CPU_STOP# Control
Output Control
Output Control
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
1
Disable
Disable
Stop Disable
Stop Disable
Stop Disable
Stop Disable
Disable
Disable
Enable
Enable
Stop Enable
Stop Enable
Stop Enable
Stop Enable
Enable
Enable
PWD
1
1
0
0
1
1
1
1
0721A—07/29/03
13