ICS951411 Datasheet, PDF (10/19 Pages) Integrated Circuit Systems – System Clock Chip for ATI RS400 P4TM-based Systems

Integrated
Circuit
Systems, Inc.
ICS951411
SMBus Table: Device ID Register
Byte 6 Pin #
Name
Bit 7
-
DevID 7
Bit 6
-
DevID 6
Bit 5
-
DevID 5
Bit 4
-
DevID 4
Bit 3
-
DevID 3
Bit 2
-
DevID 2
Bit 1
-
DevID 1
Bit 0
-
DevID 0
SMBus Table: Vendor ID Register
Byte 7 Pin #
Name
Bit 7
-
RID3
Bit 6
-
RID2
Bit 5
-
RID1
Bit 4
-
RID0
Bit 3
-
VID3
Bit 2
-
VID2
Bit 1
-
VID1
Bit 0
-
VID0
SMBus Table: Byte Count Register
Byte 8 Pin #
Name
Bit 7
-
BC7
Bit 6
-
BC6
Bit 5
-
BC5
Bit 4
-
BC4
Bit 3
-
BC3
Bit 2
-
BC2
Bit 1
-
BC1
Bit 0
-
BC0
Bytes 9 through 21 are reserved
Control Function Type
0
Device ID MSB
R
-
Device ID 6
R
-
Device ID 5
R
-
Device ID4
R
-
Device ID3
R
-
Device ID2
R
-
Device ID1
R
-
Device ID LSB
R
-
1
PWD
-
0
-
0
-
0
-
1
-
0
-
0
-
1
-
1
Control Function Type
0
Revision ID
R
-
Starts at 0 hex for A
R
-
revsion.
R
-
R
-
R
-
VENDOR ID
R
-
(0001 = ICS)
R
-
R
-
1
PWD
-
X
-
X
-
X
-
X
-
0
-
0
-
0
-
1
Control Function Type
0
1
RW
RW
RW ^{Writing to this register will}
Byte Count Programming RW configure how many bytes
b(7:0)
RW will be read back, default
RW
is 9 bytes.
RW
RW
PWD
0
0
0
0
1
0
0
1
Test Clarification Table
Comments
1. Power-up w/ TEST_SEL/REF2 > 2.0V to enter test mode.
2. Cycle power to disable test mode
HW
TEST_SEL/REF2
HW PIN
<0.8V
>2.0V
OUTPUT
NORMAL
HI-Z
0891E—03/07/05
10