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ICS9E4101 Datasheet, PDF (8/19 Pages) Integrated Device Technology – Programmable Timing Control HubTM for Intel Systems
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ICS9E4101
Programmable Timing Control HubTM for Intel Systems
I2C Table: Watchdog Timer Register
Byte 9
Pin #
Bit 7
Bit 6
Bit 5
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Name
WD4
WD3
WD2
WD1
WD0
Control Function
RESERVED
RESERVED
RESERVED
Enables
prograaming bytes
10-19
Type
RW
RW
RW
RW
RW
I2C Table: VCO Control Select Bit & WD Timer Control Register
Byte 10
Pin #
Name
Control Function
M/N Programming
Bit 7
-
M/NEN
Enable
Bit 6
-
WDEN
Watchdog Enable
Bit 5
RESERVED
Bit 4
RESERVED
Bit 3
RESERVED
Bit 2
RESERVED
Bit 1
RESERVED
Bit 0
RESERVED
Type
RW
R
I2C Table: VCO Frequency Control Register
Byte 11
Pin #
Name
Bit 7
-
N Div8
Bit 6
-
M Div6
Bit 5
-
M Div5
Bit 4
-
M Div4
Bit 3
-
M Div3
Bit 2
-
M Div2
Bit 1
-
M Div1
Bit 0
-
M Div0
Control Function
N Divider Bit 8
The decimal
representation of M
Div (6:0) is equal to
reference divider
value. Default at
power up = latch-in
or Byte 0 Rom
Type
RW
RW
RW
RW
RW
RW
RW
RW
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
Control Function
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.
Type
RW
RW
RW
RW
RW
RW
RW
RW
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
Control Function
These Spread
Spectrum bits will
program the spread
pecentage. It is
recommended to
use ICS Spread %
table for spread
programming.
Type
RW
RW
RW
RW
RW
RW
RW
RW
IDTTM Programmable Timing Control HubTM for Intel Systems
8
0
-
-
-
-
-
0
Disable
Disable
0
-
-
-
-
-
-
-
-
0
-
-
-
-
-
-
-
-
0
-
-
-
-
-
-
-
-
1
-
-
-
-
-
1
Enable
Enable
1
-
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
1
-
-
-
-
-
-
-
-
PWD
0
0
0
0
0
0
0
0
PWD
0
1
0
0
0
0
0
0
PWD
X
X
X
X
X
X
X
X
PWD
X
X
X
X
X
X
X
X
PWD
X
X
X
X
X
X
X
X
1408A—01/25/10
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