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ICS952621 数据表(PDF) 10 Page - Integrated Circuit Systems

部件名 ICS952621
功能描述  Programmable Timing Control Hub??for Next Gen P4??processor
PDF  15 Pages
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制造商  ICST [Integrated Circuit Systems]
网页  http://www.icst.com
标志 ICST - Integrated Circuit Systems

ICS952621 数据表(HTML) 10 Page - Integrated Circuit Systems

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10
Integrated
Circuit
Systems, Inc.
ICS952621
0756A—09/10/04
I
2C Table: Output Control Register
Pin #
Name
Control Function
Type0
1
PWD
Bit 7
48MHz_USB
2x output drive
0=2x drive
RW
2x drive
1xdrive
1
Bit 6
48MHz_USB
Output Control
RW
Disable
Enable
1
Bit 5
RESERVED
RESERVED
-
X
Bit 4
RESERVED
RESERVED
-
X
Bit 3
RESERVED
RESERVED
-
X
Bit 2
PCICLK_F2
Output Control
RW
stoppable
Free-run
1
Bit 1
PCICLK_F1
Output Control
RW
stoppable
Free-run
1
Bit 0
PCICLK_F0
Output Control
RW
stoppable
Free-run
1
I
2C Table: Output Control Register
Pin #
Name
Control Function
Type0
1
PWD
Bit 7
DOT_48MHZ
Output Control
RW
Disable
Enable
1
Bit 6
CPU_T/C_ITP
Output Control
RW
Disable
Enable
1
Bit 5
3V66_3/VCH
Frequency Select
Output Select
RW
3V66
VCH
0
Bit 4
3V66_3/VCH
Frequency Select
Output Control
RW
Disable
Enable
1
Bit 3
RESERVED
RESERVED
-
X
Bit 2
3V66_2
Output Control
RW
Disable
Enable
1
Bit 1
3V66_1
Output Control
RW
Disable
Enable
1
Bit 0
3V66_0
Output Control
RW
Disable
Enable
1
I
2C Table: Output Control and Fix Frequecy Register
Pin #
Name
Control Function
Type0
1
PWD
Bit 7
Test Clock Mode
Test Clock Mode
-
Disable
Enable
0
Bit 6
RESERVED
-
-
-
-
0
Bit 5
CPU *2 Test Clock
FS_A and FS_B
Operation
-
Normal
Test Mode
0
Bit 4
SRC Frequency Select
SRC Frequency
Select
-
100MHz
200MHz
0
Bit 3
Spread Spectrum Type
Down/Center
-
Down
Center
0
Bit 2
Spread Spectrum Mode
Spread Spectrum
Enable
Spread
OFF
Spread
ON
0
Bit 1
REF1
Output Control
RW
Disable
Enable
1
Bit 0
REF0
Output Control
RW
Disable
Enable
1
I
2C Table: Vendor & Revision ID Register
Pin #
Name
Control Function
Type0
1
PWD
Bit 7
RID3
R
-
-
0
Bit 6
RID2
R
-
-
0
Bit 5
RID1
R
-
-
0
Bit 4
RID0
R
-
-
0
Bit 3
VID3
R
-
-
0
Bit 2
VID2
R
-
-
0
Bit 1
VID1
R
-
-
0
Bit 0
VID0
R
-
-
1
RESERVED
RESERVED
RESERVED
VENDOR ID
-
-
-
Byte 7
-
REVISION ID
-
-
-
-
Byte 6
Byte 5
Byte 4
RESERVED



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