ICS9248-199 Datasheet, PDF (5/21 Pages) Integrated Circuit Systems – Frequency Generator for SIS 735/740 with AMD K7 Processor

ICS9248-199
Byte 5: CPU, Active/Inactive Register
(1= enable, 0 = disable)
BIT
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PIN#
23
2,3
47
19
18
-
23
22
PWD
DESCRIPTION
1 24M_48M (1: On, 0: Off)
0
REF_1X2X_Control
(0: 1x, 1: 2x)
1
APIC1X2X_Control
(0: 1x, 1: 2x)
1 AGPCLK1 (Act/Inactive)
1 AGPCLK0 (Act/Inactive)
0
IOAPIC Select
(0:16.67 MHz, 1:33.33 MHz)
1
24M_48M Select
(1: 24 MHz, 0: 48 MHz)
0 Reserved
Byte 6: PCI, Active/Inactive Register
(1= enable, 0 = disable)
BIT
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PIN#
19
18
16
15
13
12
10
23
PWD
DESCRIPTION
1 Reserved
1 Reserved
1 PCICLK4 (Act/Inactive)
1 PCICLK3 (Act/Inactive)
1 PCICLK2 (Act/Inactive)
1 PCICLK1 (Act/Inactive)
1 PCICLK0 (Act/Inactive)
X AGPSEL (read back)
Byte 7: Control, Active/Inactive Register
(1= enable, 0 = disable)
BIT
Bit 7
Bit 6
Bit 5
PIN#
12
13
10
PWD
DESCRIPTION
0
PCLCLK1_1X2X_Control
(1: 2x, 0: 1x)
0
PCLCLK2_1X2X_Control
(1: 2x, 0: 1x)
X FS3 (read back)
Bit 4 9
X FS2 (read back)
Bit 3 3
X FS1 (read back)
Bit 2 2
Bit 1 15
Bit 0 16
X FS0 (read back)
X
PCLCLK3_1X2X_Control
(1: 2x, 0: 1x)
X
PCLCLK4_1X2X_Control
(1: 2x, 0: 1x)
0376E—12/23/02
5