ICS950410 Datasheet, PDF (6/15 Pages) Integrated Circuit Systems – AMD - K System Clock Chip

ICS950410
Advance Information
I²C Table: Frequency Select Register
Byte 0
Pin #
Name
Bit 7
-
SS_EN
Bit 6
-
SEL24_48MHz
Bit 5
-
FS Source Select
Bit 4
-
FS4
Bit 3
-
FS3
Bit 2
-
FS2
Bit 1
-
FS1
Bit 0
-
FS0
Control Function
Spread Enable
Output Select
FS Source Select
Freq Select Bit 4
Freq Select Bit 3
Freq Select Bit 2
Freq Select Bit 1
Freq Select Bit 0
Type
0
1
RW
OFF
ON
RW
48MHz
24MHz
RW
latch
I2C
RW
RW
RW See Table1: Frequency Selection Table
RW
RW
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
1
CPUCLK8T/C2
6
HTTCLK0
7
PCICLK8/HTTCLK1
8
PCICLK9/HTTCLK2
11
PCICLK11/HTTCLK3
12
PCICLK10
13
PCICLK0
14
PCICLK1
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
I²C Table: Output Control Register
Byte 2
Pin #
Name
Bit 7
17
Bit 6
18
Bit 5
21
Bit 4
22
Bit 3
23
Bit 2
24
Bit 1
28
Bit 0
31
PCICLK2
PCICLK3
PCICLK4
PCICLK5
PCICLK6
PCICLK7
24_48MHz
48MHz
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
I²C Table: Output Control Register
Byte 3
Pin #
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
37,36
41,40
45,48
-
-
-
-
CPUCLK8T/C_1
CPUCLK8T/C_0
Reserved
REF0/REF1
PCI_Str1
PCI_Str0
PCI_Str1
PCI_Str0
Control Function Type
Output Control
RW
Output Control
RW
Reserved
RW
Output Control
RW
PCI9,8 Strength
RW
Control only
RW
PCI11 Strength Control RW
only
RW
0
Disable
Disable
-
Disable
00: 0.5X Drive
01: 1.0X Drive
00: 0.5X Drive
01: 1.0X Drive
1
Enable
Enable
-
Enable
10: 1.5X Drive
11: 2.0X Drive
10: 1.5X Drive
11: 2.0X Drive
PWD
1
Latch
0
0
Latch
Latch
Latch
Latch
PWD
1
1
1
1
1
1
1
1
PWD
1
1
1
1
1
1
1
1
PWD
1
1
1
1
0
1
0
1
0888—04/06/04
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