ICS954119 Datasheet, PDF (7/17 Pages) Integrated Circuit Systems – Programmable Timing Control Hub™ for Next Gen P4™ processor

Integrated
Circuit
Systems, Inc.
I²C Table: Frequency Select Register
Byte 0
Pin #
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
I²C Table: Output Control Register
Byte 1
Pin #
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
7
14,15
12
51
50
40,39
43,42
-
I²C Table: Output Control Register
Byte 2
Pin #
Bit 7
4
Bit 6
3
Bit 5
2
Bit 4
55
Bit 3
54
Bit 2
53
Bit 1
9
Bit 0
8
Name
FS Source
SS_EN1
Reserved
Bit4
Bit3
FSLC
FSLB
FSLA
Name
PCICLK_F0
DOTT/C_96MHz
USB_48MHz
REF0
REF1
CPUCLKT/C1
CPUCLKT/C0
CPUCLK's
Name
PCICLK5
PCICLK4
PCICLK3
PCICLK2
PCICLK1
PCICLK0
PCICLK_F2
PCICLK_F1
I²C Table: Output Control Register
Byte 3
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Pin #
-
-
33,32
31,30
27,26
24,23
22,21
18,17
Name
PCIEXCLK's
Reserved
PCIEXCLKT/C4
PCIEXCLKT/C3
SRCCLKT/C
PCIEXCLKT/C2
PCIEXCLKT/C1
PCIEXCLKT/C0
Control Function
Frequency H/W IIC
Select
PLL1 Spread Enable
Reserved
Freq Select Bit 4
Freq Select Bit 3
Freq Select Bit 2
Freq Select Bit 1
Freq Select Bit 0
Type
RW
RW
RW
RW
RW
RW
RW
RW
Control Function
Output Control
Output Control
Output Control
Output Control
Output Control
Output Control
Output Control
PD Mode Output State
Control
Type
RW
RW
RW
RW
RW
RW
RW
RW
Control Function
Output Control
Output Control
Output Control
Output Control
Output Control
Output Control
Output Control
Output Control
Type
RW
RW
RW
RW
RW
RW
RW
RW
Control Function
PD Mode Output State
Control
Reserved
Output Control
Output Control
Output Control
Output Control
Output Control
Output Control
Type
RW
RW
RW
RW
RW
RW
RW
RW
ICS954119
Advance Information
0
1
Latch Inputs
IIC
OFF
ON
-
-
See Table 1: PLL 1 Frequency Selection Table
0
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Driven
0
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
1
Enable
Enable
Enable
Enable
Enable
Enable
Enable
Hi-Z
1
Enable
Enable
Enable
Enable
Enable
Enable
Enable
Enable
PWD
0
1
1
0
0
Latch
Latch
Latch
PWD
1
1
1
1
1
1
1
0
PWD
1
1
1
1
1
1
1
1
0
Driven
-
Disable
Disable
Disable
Disable
Disable
Disable
1
Hi-Z
-
Enable
Enable
Enable
Enable
Enable
Enable
PWD
0
1
1
1
1
1
1
1
I²C Table: Output Control Register
Byte 4
Pin #
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Name
PCI/SRC Stop EN
PCICLK_F2
PCICLK_F1
PCICLK_F0
PCIEXCLKT/C (5:3)
SRCCLKT/C
PCIEXCLKT/C (2:0)
Reserved
0875—05/24/04
Control Function
Stop all PCI / PCIEX /
SRC clocks
Stop Control
Stop Control
Stop Control
Stop Control
Stop Control
Stop Control
Reserved
Type
RW
RW
RW
RW
RW
RW
RW
7
0
Enable
Free Running
Free Running
Free Running
Free Running
Free Running
Free Running
-
1
Disable
Stoppable
Stoppable
Stoppable
Stoppable
Stoppable
Stoppable
-
PWD
1
0
0
0
1
1
1
1