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ICS952906A датащи(PDF) 12 Page - Integrated Circuit Systems

номер детали ICS952906A
подробное описание детали  Programmable Timing Control Hub for Next Gen P4??processor
PDF  23 Pages
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производитель  ICST [Integrated Circuit Systems]
домашняя страница  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS952906A датащи(HTML) 12 Page - Integrated Circuit Systems

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12
Integrated
Circuit
Systems, Inc.
ICS952906A
1236A—08/06/07
I
2C Table: VCO Frequency Control Register
Control
Function
Bit 7
N Div8
N Divider Prog bit 8
RW
X
Bit 6
M Div6
RW
X
Bit 5
M Div5
RW
X
Bit 4
M Div4
RW
X
Bit 3
M Div3
RW
X
Bit 2
M Div2
RW
X
Bit 1
M Div1
RW
X
Bit 0
M Div0
RW
X
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
RW
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
01
-
01
PWD
0
These Spread Spectrum bits in Byte 13
and 14 will program the spread
pecentage. It is recommended to use
ICS Spread % table for spread
programming.
These Spread Spectrum bits in Byte 13
and 14 will program the spread
pecentage. It is recommended to use
ICS Spread % table for spread
programming.
01
--
-
The decimal representation of M and N
Divier in Byte 11 and 12 will configure the
VCO frequency. Default at power up =
latch-in or Byte 0 Rom table. VCO
Frequency = 14.318 x [NDiv(8:0)+8] /
[MDiv(6:0)+2]
1
The decimal representation of M and N
Divier in Byte 11 and 12 will configure the
VCO frequency. Default at power up =
latch-in or Byte 0 Rom table. VCO
Frequency = 14.318 x [NDiv(8:0)+8] /
[MDiv(6:0)+2]
-
-
Spread Spectrum
Programming b(13:8)
-
-
-
-
-
PWD
-
Byte 14
Pin #
Name
Type
PWD
-
Spread Spectrum
Programming b(7:0)
-
-
-
-
-
-
-
Name
Type
-
-
Byte 13
Pin #
PWD
-
N Divider
Programming b(8:0)
-
-
-
-
-
Byte 12
Pin #
Name
Type
-
M Divider
Programming bits
-
-
-
-
-
-
-
Byte 11
Pin #
Name
Type



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