ICS952702 Datasheet, PDF (6/17 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for K7 System

Integrated
Circuit
Systems, Inc.
ICS952702
I²C Table: Frequency Select Register
Byte 0 Pin #
Name
Bit 7
-
Bit 6
-
Bit 5
27
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
FS Source
SS_EN
SEL12/48MHz
FS4
FS3
FS2
FS1
FS0
Control Function
Frequency H/W IIC
Select
Spread Enable Control
Output Control
Freq Select Bit 4
Freq Select Bit 3
Freq Select Bit 2
Freq Select Bit 1
Freq Select Bit 0
Type
0
1
RW
Latch Inputs
IIC
RW
OFF
RW
12MHz
ON
48MHz
RW
RW
RW See Table 1: Frequency Selection Table
RW
RW
PWD
0
1
Latch
Latch
Latch
Latch
Latch
Latch
I²C Table: Output Control Register
Byte 1 Pin #
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
26
27
-
47
46
-
43
40/39
24_48MHz
48MHz
SEL24/48MHz
IOAPIC1
IOAPIC0
Reserved
CPUCLKODT1
CPUCLKODT0/C0
Control Function
Output Control
Output Control
Output Control
Output Control
Output Control
Reserved
Output Control
Output Control
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
Disable
Disable
24MHz
Disable
Disable
Reserved
Disable
Disable
1
Enable
Enable
48MHz
Enable
Enable
Reserved
Enable
Enable
PWD
1
1
Latch
1
1
0
1
1
I²C Table: Output Control Register
Byte 2 Pin #
Name
Bit 7
15
Bit 6
14
Bit 5
23
Bit 4
22
Bit 3
21
Bit 2
20
Bit 1
17
Bit 0
16
PCICLK_F1
PCICLK_F0
PCICLK5
PCICLK4
PCICLK3
PCICLK2
PCICLK1
PCICLK0
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
0
Disable
Disable
Disable
Disable
Disable
Disable
Disable
Disable
1
Enable
Enable
Enable
Enable
Enable
Enable
Enable
Enable
PWD
1
1
1
1
1
1
1
1
I²C Table: Output Control Register
Byte 3 Pin #
Name
Bit 7
4
Bit 6
3
Bit 5
2
Bit 4
-
Bit 3
10
Bit 2
9
Bit 1
30
Bit 0
31
REF2
REF1
REF0
Reserved
ZCLK1
ZCLK0
AGPCLK1
AGPCLK0
Control Function
Output Control
Output Control
Output Control
Reserved
Output Control
Output Control
Output Control
Output Control
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
Disable
Disable
Disable
Reserved
Disable
Disable
Disable
Disable
1
Enable
Enable
Enable
Reserved
Enable
Enable
Enable
Enable
PWD
1
1
1
0
1
1
1
1
0795D—05/06/05
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