English
Language : 

ICS954119 Datasheet, PDF (8/17 Pages) Integrated Circuit Systems – Programmable Timing Control Hub™ for Next Gen P4™ processor
◁
Integrated
Circuit
Systems, Inc.
I2C Table: Programmable Skew Control Register
Byte 5
Pin #
Name
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
PCISkw3
PCISkw2
PCISkw1
PCISkw0
ASYNC1
ASYNC0
REF0
Reserved
I2C Table: Output Drive Control Register
Byte 6
Pin #
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Name
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
I2C Table: Vendor ID Register
Byte 7
Pin #
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Name
Reserved
Reserved
Reserved
Reserved
VID3
VID2
VID1
VID0
I2C Table: Byte Count Register
Byte 8
Pin #
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Name
BC7
BC6
BC5
BC4
BC3
BC2
BC1
BC0
I2C Table: WD Time Control Register
Byte 9
Pin #
Bit 7
-
Bit 6
-
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
Bit 1
-
Bit 0
-
Name
WD_EN
WD_SEL
WD Hard Status
WD Soft Status
WDTCtrl
WD2
WD1
WD0
0875—05/24/04
ICS954119
Advance Information
Control Function
CPU-PCI 7 Steps
Skew Control (ps)
PCI Async Freq
REF0 select
Reserved
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
0000:0
0100:150
0001:N/A
0101:N/A
0010:N/A
0110:N/A
0011:N/A
0111:N/A
00 = PLL1
01 = 33.0
XTAL
-
1
1000:300 1100:450
1001:N/A 1101:600
1010:N/A 1110:750
1011:N/A 1111:900
10 = 37.7
11 = 44.0
Fixed PLL
-
PWD
0
0
0
0
0
0
0
0
Control Function
Type
0
RW
-
Reserved
RW
-
RW
-
Reserved
RW
-
RW
-
Reserved
RW
-
RW
-
Reserved
RW
-
1
PWD
-
1
-
1
-
1
-
1
-
0
-
1
-
0
-
1
Control Function
Reserved
Reserved
Reserved
Reserved
VENDOR ID
Type
RW
RW
RW
RW
R
R
R
R
0
-
-
-
-
-
-
001 = ICS
-
1
PWD
-
0
-
0
-
0
-
0
-
0
-
0
-
0
-
1
Control Function
Byte Count
Programming b(7:0)
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
1
Writing to this register will configure how many bytes will be read
back, default is 0F = 15 bytes.
PWD
0
0
0
0
1
1
1
1
Control Function
Watchdog Alarm
Enable
Watchdog Hard/Soft
Alarm Select
WD Hard Alarm Status
WD Soft Alarm Status
Watch Dog Time base
Control
WD Timer Bit 2
WD Timer Bit 1
WD Timer Bit 0
Type
RW
RW
R
R
RW
RW
RW
RW
0
Disable
Hard only
Normal
Normal
290ms Base
1
Enable
Hard and Soft
Alarm
Alarm
1160ms Base
These bits represent X*290ms (or 1.16S) the watchdog timer
waits before it goes to alarm mode. Default is 7 X 290ms = 2s.
PWD
0
0
X
X
0
1
1
1
8
 ▷