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ICS952802 数据表(PDF) 9 Page - Integrated Circuit Systems

部件名 ICS952802
功能描述  Programmable Timing Control Hu for P4 processor
PDF  19 Pages
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制造商  ICST [Integrated Circuit Systems]
网页  http://www.icst.com
标志 ICST - Integrated Circuit Systems

ICS952802 数据表(HTML) 9 Page - Integrated Circuit Systems

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9
Integrated
Circuit
Systems, Inc.
ICS952802
Advance Information
0731—09/18/02
I
2C Table: VCO Frequency Control Register
Control
Function
Bit 7
N Div7
RW
-
-
X
Bit 6
N Div6
RW
-
-
X
Bit 5
N Div5
RW
-
-
X
Bit 4
N Div4
RW
-
-
X
Bit 3
N Div3
RW
-
-
X
Bit 2
N Div2
RW
-
-
X
Bit 1
N Div1
RW
-
-
X
Bit 0
N Div0
RW
-
-
X
I
2C Table: Spread Spectrum Control Register
Control
Function
Bit 7
SSP7
RW
-
-
X
Bit 6
SSP6
RW
-
-
X
Bit 5
SSP5
RW
-
-
X
Bit 4
SSP4
RW
-
-
X
Bit 3
SSP3
RW
-
-
X
Bit 2
SSP2
RW
-
-
X
Bit 1
SSP1
RW
-
-
X
Bit 0
SSP0
RW
-
-
X
I
2C Table: Spread Spectrum Control Register
Control
Function
Bit 7
Reserved
Reserved
R
-
-
0
Bit 6
Reserved
Reserved
R
-
-
0
Bit 5
SSP13
R
-
-
X
Bit 4
SSP12
RW
-
-
X
Bit 3
SSP11
RW
-
-
X
Bit 2
SSP10
RW
-
-
X
Bit 1
SSP9
RW
-
-
X
Bit 0
SSP8
RW
-
-
X
I
2C Table: Output Divider Control Register
Control
Function
Bit 7
PCI Div3
RW
X
Bit 6
PCI Div2
RW
X
Bit 5
PCI Div1
RW
X
Bit 4
PCI Div0
RW
X
Bit 3
CPU Div3
RW
X
Bit 2
CPU Div2
RW
X
Bit 1
CPU Div1
RW
X
Bit 0
CPU Div0
RW
X
1
1
It is recommended to
use ICS Spread %
Table for Spread
Programming
0
0PWD
PWD
Byte 12
Pin #
Name
Type
-
The decimal
representation of N Div
(8:0) + 8 is equal to
VCO divider value.
Default at power up =
latch-in or Byte 0 Rom
table.
-
-
-
-
-
-
-
Byte 13
Pin #
Name
Type
-
These Spread
Spectrum bits will
program the spread
pecentage. It is
recommended to use
ICS Spread % table for
spread programming.
-
-
-
-
-
-
-
PWD
-
Byte 14
Pin #
Name
Type
0
1
-
-
-
-
-
-
-
PWD
Byte 15
Pin #
Name
1
0
Type
-
-
-
CPU divider ratio can
be configured via these
4 bits individually.
See Table 2: Divider Ratio
Combination Table
-
-
-
-
-
PCI divider ratio can be
configured via these 4
bits individually.
See Table 2: Divider Ratio
Combination Table



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