ICS9148-58 Datasheet, PDF (3/14 Pages) Integrated Circuit Systems – Frequency Generator & Integrated Buffers for PENTIUM/ProTM

Mode Pin - Power Management Input Control
MODE, Pin 25
(Latched Input)
0
1
Pin 17
CPU_STOP#
(INPUT)
SDRAM 11
(OUTPUT)
Pin 18
PCI_STOP#
(INPUT)
SDRAM 10
(OUTPUT)
ICS9148 - 58
Power Management Functionality
CPU_STOP#
0
1
1
PCI_STOP#
1
1
0
AGP,
CPUCLK
Outputs
Stopped Low
Running
Running
PCICLK
(0:5)
Running
Running
Stopped Low
PCICLK_F,
REF,
24/48MHz
and SDRAM
Running
Running
Running
Crystal
OSC
Running
Running
Running
VCO
Running
Running
Running
CPU 3.3#_2.5V Buffer selector for CPUCLK drivers.
CPU3.3#_2.5
Input level
(Latched Data)
1
0
Buffer Selected for
operation at:
2.5V VDD
3.3V VDD
Functionality
V_DD1, 2, 3, 4 = 3.3V±5%, V_DDL = 2.5V ±5% or 3.3 ±5%, TA= 0 to 70°C
Crystal (X1, X2) = 14.31818MHz
FS2 FS1 FS0
1
1
1
1
1
0
1
0
1
1
0
0
0
1
1
0
1
0
0
0
1
0
0
0
CPU
(M Hz)
100.2
95.25
83.3
133.3
75
124
66.8
11 2
S DRAM (M Hz)
SD_SEL=1
SD_SEL=0
100.2
66.6
95.25
63.5
83.3
66.6
133.3
88.7
75
75
124
82.7
66.8
66.8
112
74.7
P C I (M Hz)
33.3
31.75
33.3
44.3
37.5
41.3
33.4
37.3
AGP (M Hz)
66.6
63.5
66.6
88.7
75
82.7
66.8
74.7
3