ICS950508 Datasheet, PDF (5/19 Pages) Integrated Circuit Systems – Programmable Timing Control HubTM for PII/IIITTM

Integrated
Circuit
Systems, Inc.
Byte 1: Output Control Register
(1 = enable, 0 = disable)
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Pin#
-
-
-
35
-
34
-
38
PWD
X
X
X
1
1
1
1
1
Readback FS3#
Readback FS0#
Readback FS2#
24MHz
(Reserved)
48MHz
(Reserved)
SDRAM_F
Byte 2: Output Control Register
(1 = enable, 0 = disable)
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Pin#
39
40
42
43
44
46
47
48
PWD
1
1
1
1
1
1
1
1
SDRAM7
SDRAM6
SDRAM5
SDRAM4
SDRAM3
SDRAM2
SDRAM1
SDRAM0
Byte 3: Output Control Register
(1 = enable, 0 = disable)
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Pin#
20
19
17
16
15
13
12
11
PWD
1
1
1
1
1
1
1
1
PCICLK7
PCICLK6
PCICLK5
PCICLK4
PCICLK3
PCICLK2
PCICLK1
PCICLK0
Description
Description
Description
Byte 4: Output Control Register
(1 = enable, 0 = disable)
Bit
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Pin#
8
6
7
-
54
-
51
52
PWD
1
1
1
X
1
X
1
1
3V66_2
3V66_0
3V66_1
Readback FS4#
IOAPIC
Readback FS1#
CPUCLK1
CPUCLK0
Description
0470E—04/06/05
5
ICS950508