ICS952606 Datasheet, PDF (15/20 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for Next Gen P4 processor

Integrated
Circuit
Systems, Inc.
I²C Table: VCO Frequency Control Register
Byte 12
Pin #
Name
Bit 7
-
N Div7
Bit 6
-
N Div6
Bit 5
-
N Div5
Bit 4
-
N Div4
Bit 3
-
N Div3
Bit 2
-
N Div2
Bit 1
-
N Div1
Bit 0
-
N Div0
I²C Table: Spread Spectrum Control Register
Byte 13
Pin #
Name
Bit 7
-
SSP7
Bit 6
-
SSP6
Bit 5
-
SSP5
Bit 4
-
SSP4
Bit 3
-
SSP3
Bit 2
-
SSP2
Bit 1
-
SSP1
Bit 0
-
SSP0
I²C Table: Spread Spectrum Control Register
Byte 14
Pin #
Name
Bit 7
-
Reserved
Bit 6
-
Reserved
Bit 5
-
SSP13
Bit 4
-
SSP12
Bit 3
-
SSP11
Bit 2
-
SSP10
Bit 1
-
SSP9
Bit 0
-
SSP8
Control Function
Type
0
RW
-
The decimal
RW
-
representation of N Div _RW
-
(8:0) is equal to VCO
RW
-
divider value. Default
RW
-
at power up = latch-in
RW
-
or Byte 0 Rom table.
RW
-
RW
-
Control Function
Type
0
These Spread
RW
-
Spectrum bits will
RW
-
program the spread
RW
-
pecentage. It is
RW
-
recommended to use
ICS Spread % table for
RW
RW
RW
-
-
-
spread programming.
RW
-
Control Function
Type
0
Reserved
RW
-
Reserved
RW
-
RW
-
It is recommended to
RW
-
use ICS Spread %
RW
-
table for spread
RW
-
programming.
RW
-
RW
-
ICS952606
1
PWD
-
X
-
X
-
X
-
X
-
X
-
X
-
X
-
X
1
PWD
-
X
-
X
-
X
-
X
-
X
-
X
-
X
-
X
1
PWD
-
0
-
0
-
X
-
X
-
X
-
X
-
X
-
X
0717F—06/10/05
15