ICS950223 Datasheet, PDF (12/24 Pages) Integrated Circuit Systems – Programmable Timing Control Hub for P4

Integrated
Circuit
Systems, Inc.
I²C Table: Vendor & Revision ID Register
Byte 7
Pin #
Name
Control Function
Type
0
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
RID3
RID2
RID1
RID0
VID3
VID2
VID1
VID0
R
-
REVISION ID
R
-
R
-
R
-
R
-
VENDOR ID
R
-
R
-
R
-
ICS950223
1
PWD
-
1
-
1
-
0
-
1
-
0
-
0
-
0
-
1
I²C Table: Byte Count Register
Byte 8
Pin #
Name
Control Function
Type
0
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
BC7
RW
-
BC6
Writing to this register
RW
-
BC5
will configure how
RW
-
BC4
many bytes will be read
RW
-
BC3
back, default is 0F = 15
RW
-
BC2
bytes.
RW
-
BC1
RW
-
BC0
RW
-
1
PWD
-
0
-
0
-
0
-
0
-
1
-
1
-
1
-
1
I²C Table: Watchdog Timer Register
Byte 9
Pin #
Name
Control Function
Type
0
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
WD7
RW
-
WD6
These bits represent
RW
-
WD5
X*290ms the watchdog
RW
-
WD4
timer will wait before it
goes to alarm mode.
RW
-
WD3
Default is 8 X 290ms
RW
-
WD2
=2.32 seconds
RW
-
WD1
RW
-
WD0
RW
-
1
PWD
-
0
-
0
-
0
-
0
-
1
-
0
-
0
-
0
I²C Table: VCO Control Select Bit & WD Timer Control Register
Byte 10
Pin #
Name
Control Function
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
0496C—05/06/05
M/NEN
WDEN
WDFSEN
WD SF4
WD SF3
WD SF2
WD SF1
WD SF0
M/N Programming
Enable
Watchdog Enable
WD Safe Frequency
Mode
Writing to these bit will
configure the safe
frequency as Byte 0 Bit
(6:0)
Type
RW
RW
RW
RW
RW
RW
RW
RW
12
0
Latched
Input
Disable
Latched
FS/Byte0
-
-
-
-
-
1
IIC Prog.
B(11:17)
Enable
WD B10
b(4:0)
-
-
-
-
-
PWD
0
0
0
1
1
0
0
1