ICS952703 Datasheet, PDF (6/17 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for K7 System

Integrated
Circuit
Systems, Inc.
ICS952703
Preliminary Product Preview
I²C Table: Frequency Select Register
Byte 0
Pin #
Name
Bit 7
-
SS_EN
Bit 6
-
SEL12_48MHz
Bit 5
-
SEL24_48MHz
Bit 4
-
Bit4
Bit 3
-
FS3
Bit 2
-
FS2
Bit 1
-
FS1
Bit 0
-
FS0
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
2
3
4
43,42
14
15
16
17
REF0
REF1
REF2
SRCCLKT/C
PCICLK_F0
PCICLK_F1
PCICLK0
PCICLK1
I²C Table: Output Control Register
Byte 2
Pin #
Name
Bit 7
20
Bit 6
21
Bit 5
22
Bit 4
23
Bit 3
26
Bit 2
27
Bit 1
30
Bit 0
31
PCICLK2
PCICLK3
PCICLK4
PCICLK5
24_48MHz
12_48MHz
AGPCLK1
AGPCLK0
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
-
Reserved
Reserved
IREF Bit1
IREF Bit0
Vendor_ID3
Vendor_ID2
Vendor_ID1
Vendor_ID0
Control Function
Spread Enable
Output Select
Output 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
12MHz
RW
48MHz
24MHz
RW
RW
RW See Table1: Frequency Selection Table
RW
RW
PWD
1
Latch
Latch
0
Latch
Latch
Latch
Latch
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
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
Control Function
Reserved
Reserved
IREF Mulitiplier
Programming Bits
Vendor ID
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
-
-
00 = 5 x Iref
01 = 4 x Iref
-
-
-
-
1
-
-
10 = 6 x Iref
11 = 7 x Iref
-
-
-
-
PWD
1
0
1
0
0
0
0
1
0813B—05/17/05
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