ICS952607 Datasheet, PDF (9/21 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for Next Gen P4 processor

Integrated
Circuit
Systems, Inc.
ICS952607
Advance Information
I²C Table: Output Control Register
Byte 3
Pin #
Name
Bit 7
-
Bit 6
-
Bit 5
20
Bit 4
19
Bit 3
16
Bit 2
15
Bit 1
14
Bit 0
13
ASEL1
Reserved
PCICLK5
PCICLK4
PCICLK3
PCICLK2
PCICLK1
PCICLK0
I²C Table: Output Control Register
Byte 4
Pin #
Name
Bit 7
48MHz_0
2x output drive
Bit 6
Bit 5
Bit 4
30
Bit 3
31
Bit 2
10
Bit 1
9
Bit 0
8
SRCFS
Reserved
3V66_1
3V66_0
PCICLK_F2
PCICLK_F1
PCICLK_F0
Control
Function
3V66/PCI Freq Select
Reserved
Output Control
Output Control
Output Control
Output Control
Output Control
Output Control
Type
0
1
RW See Table 5: Async AGP/PCI Freq Table
RW
-
-
RW
Disable
Enable
RW
Disable
Enable
RW
Disable
Enable
RW
Disable
Enable
RW
Disable
Enable
RW
Disable
Enable
Control
Function
0=2x drive
SRC Frequency
Select
Reserved
Output Control
Output Control
Output Control
Output Control
Output Control
Type
RW
-
RW
RW
RW
RW
RW
RW
0
2x drive
100MHz
-
Disable
Disable
Disable
Disable
Disable
1
normal
200MHz
-
Enable
Enable
Enable
Enable
Enable
PWD
0
0
1
1
1
1
1
1
PWD
0
0
0
1
1
1
1
1
I²C Table: Reserved Register
Byte 5
Pin #
Name
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
26
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
3V66_3/VCH
Select
Mode Sel1
Mode Sel0
3V66_3/VCH
M PLL2 Div3
M PLL2 Div2
M PLL2 Div1
M PLL2 Div0
Control
Function
Output Select
PLL Mode Selection
Bits
Output Control
M Divider
Programming bits for
Async mode 2&3
Type
0
1
RW
3V66
VCH
RW
See Table 4: Mode Selection Table
RW
RW
Disable
Enable
RW
RW
The decimal representation of M PLL2 Div
(3:0) + 2 is equal to REF divider value for
RW
PLL2
RW
PWD
0
0
0
1
X
X
X
X
Table 3: Linear M/N AGP/PCI Programmable Frequency Example
Hex B5b3:0 Hex B6b6:0 AGP Freq PCI Freq Hex B5b3:0 Hex B6b6:0 AGP Freq PCI Freq
C
31
65.15
32.58
C
33
67.44
33.72
B
2D
65.24
32.62
7
1E
67.57
33.78
A
29
65.34
32.67
B
2F
67.70
33.85
7
1D
65.79
32.89
A
2B
68.01
34.01
6
19
66.01
33.01
C
34
68.58
34.29
D
36
66.14
33.07
B
30
68.93
34.47
C
32
66.30
33.15
A
2C
69.34
34.67
B
2E
66.47
33.24
C
35
69.73
34.86
A
2A
66.68
33.34
9
28
69.83
34.91
D
37
67.21
33.61
6
1B
70.01
35.01
0734—07/16/04
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