ICS9DB401 Datasheet, PDF (10/16 Pages) Integrated Circuit Systems – Four Output Differential Buffer for PCI Express

Integrated
Circuit
Systems, Inc.
ICS9DB401
SMBus Table: Output Control Register
Byte 3 Pin # Name
Control Function
Bit 7
Reserved
Bit 6
Reserved
Bit 5
Reserved
Bit 4
Reserved
Bit 3
Reserved
Bit 2
Reserved
Bit 1
Reserved
Bit 0
Reserved
Type
RW
RW
RW
RW
RW
RW
RW
RW
SMBus Table: Vendor & Revision ID Register
Byte 4 Pin # Name
Control Function
Bit 7
-
RID3
Bit 6
-
Bit 5
-
RID2
RID1
REVISION ID
Bit 4
-
RID0
Bit 3
-
VID3
Bit 2
-
Bit 1
-
VID2
VID1
VENDOR ID
Bit 0
-
VID0
Type
R
R
R
R
R
R
R
R
SMBus Table: DEVICE ID
Byte 5 Pin # Name
Control Function
Bit 7
-
Device ID 7 (MSB)
Bit 6
-
Device ID 6
Bit 5
-
Device ID 5
Bit 4
-
Device ID 4
Bit 3
-
Device ID 3
Bit 2
-
Device ID 2
Bit 1
-
Device ID 1
Bit 0
-
Device ID 0
Type
RW
RW
RW
RW
RW
RW
RW
RW
SMBus Table: Byte Count Register
Byte 6 Pin # Name
Control
Function
Bit 7
-
BC7
Bit 6
-
BC6
Bit 5
-
Bit 4
-
Bit 3
-
Bit 2
-
BC5
BC4
Writing to this register
configures how many
BC3
bytes will be read back.
BC2
Bit 1
-
BC1
Bit 0
-
BC0
Type
RW
RW
RW
RW
RW
RW
RW
RW
0
1
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0
1
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PWD
X
X
X
X
X
X
X
X
PWD
X
X
X
X
0
0
0
1
PWD
0
1
0
0
0
0
0
1
PWD
0
0
0
0
0
1
1
1
1014B—09/07/06
10