參數(shù)資料
型號(hào)： ICS950227
英文描述： Programmable Timing Control Hub for P4
中文描述： 可編程定時(shí)控制中心，為小
文件頁(yè)數(shù)： 8/17頁(yè)
文件大?。?/td> 128K
代理商： ICS950227
8
Integrated
Circuit
Systems, Inc.
ICS950227
0641D—07/03/03
I
2
C Table: VCO Frequency Control Register
Pin #
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
-
Name
N Div7
N Div6
N Div5
N Div4
N Div3
N Div2
N Div1
N Div0
Control Function
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
-
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
PWD
X
X
X
X
X
X
X
X
I
2
C Table: Spread Spectrum Control Register
Pin #
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
-
Name
SSP7
SSP6
SSP5
SSP4
SSP3
SSP2
SSP1
SSP0
Control Function
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
-
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
PWD
X
X
X
X
X
X
X
X
I
2
C Table: Spread Spectrum Control Register
Pin #
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
-
Name
Reserved
Reserved
SSP13
SSP12
SSP11
SSP10
SSP9
SSP8
Control Function
Reserved
Reserved
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
-
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
PWD
0
0
X
X
X
X
X
X
I
2
C Table: Output Divider Control Register
Pin #
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
-
Name
Reserved
Reserved
Reserved
Reserved
CPU Div3
CPU Div2
CPU Div1
CPU Div0
Control Function
Reserved
Reserved
Reserved
Reserved
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
-
-
-
-
1
-
-
-
-
PWD
0
0
0
0
X
X
X
X
I
2
C Table: Output Divider Control Register
Pin #
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
-
Name
Reserved
Reserved
Reserved
Reserved
3V66 Div3
3V66 Div2
3V66 Div1
3V66 Div0
Control Function
Reserved
Reserved
Reserved
Reserved
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
-
-
-
-
1
-
-
-
-
PWD
0
0
0
0
X
X
X
X
See Table 3: Divider Ratio
Combination Table 2-3-5-7
Byte 16
-
-
-
-
-
-
-
3V66 divider ratio can
be configured via these
4 bits individually.
See Table 3: Divider Ratio
Combination Table
-
Byte 14
It is recommended to
use ICS Spread %
table for spread
programming.
CPU divider ratio can
be configured via these
4 bits individually.
-
-
-
-
-
-
-
Byte 13
These Spread
Spectrum bits will
program the spread
pecentage. It is
recommended to use
ICS Spread % table for
spread programming.
-
-
-
-
-
-
-
Byte 12
The decimal
representation of N Div
(8:0) is equal to VCO
divider value. Default
at power up = latch-in
or Byte 0 Rom table.
-
-
-
-
-
-
-
Byte 15
-
-
-
-
-
-
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