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ICS952703 Datasheet(PDF) 6 Page - Integrated Circuit Systems

Part # ICS952703
Description  Programmable Timing Control Hub for K7 System
PDF  17 Pages
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Manufacturer  ICST [Integrated Circuit Systems]
Direct Link  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS952703 Datasheet(HTML) 6 Page - Integrated Circuit Systems

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



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