ICS9169C-41 Datasheet, PDF (2/7 Pages) Integrated Circuit Systems – Frequency Generator for PentiumPro™ Based Systems

ICS9169C-41
Pin Descriptions
PIN NUMBER
1, 8, 14, 26
2
3
4, 11 20, 23, 29
5
18, 17, 13, 12,
10, 9, 7, 6,
15
PIN NAME
V_DD
X1
X2
GND
CPUCLK1
FS2
CPUCLK(11,10,7:2)
CPUCLK8
FS1
CPUCLK9
16
FS0
CPUCLK12
19
BSEL
28, 27, 25, 24, 22, 21
30
31
32
33
34
PCICLK (6:1)
USBCLK
IOCLK
AVDD
REF1
REF0
TYPE
PWR
IN
OUT
PWR
OUT
IN
OUT
OUT
IN
OUT
IN
OUT
IN
OUT
OUT
OUT
PWR
OUT
OUT
DESCRIPTION
Voltage Supply
Crystal input. Nominally 14.318MHz
Crystal output. Nominally 14.318MHz
Ground
Processor clock output which are a multiple of the input reference
clock as shown in the preceding table.
Frequency multiplier select pins. See shared pin programming
description later in this data sheet for further explanation.
CPU clock output
Processor clock output which are a multiple of the input reference
clock as shown in the preceding table.
Frequency multiplier select pin. See shared pin programming
description later in this data sheet for further explanation.
Processor clock output which are a multiple of the input reference
clock as shown in the preceding table.
Frequency multiplier select pins. See shared pin programming
description later in this data sheet for further explanation.
Processor clock output which are a multiple of the input reference
clock as shown in the preceding table.
Selection for synchronous (High) or asynchronous (Low) bus clock
operation. See shared pin programming description later in this data
sheet for further explanation.
PCI Clock outputs. syncronous to CPU with 1-4ns delay.
USB clock output 48 MHz
I/O clock output 24 MHz
Analog Voltage Supply
Reference clock output (14.318 MHz)
Reference clock output (14.318 MHz) for ISA slots
(drives C_LOAD = 45pF)
2