ICS94222 Datasheet, PDF (3/19 Pages) List of Unclassifed Manufacturers – Programmable System Frequency Generator for PII/III™

ICS94222
Advance Information
General Description
The ICS94222 is a single chip clock solution for desktop designs using the BX/Apollo Pro133/ALI 1631 style chipset. It provides all
necessary clock signals for such a system.
The ICS94222 belongs to ICS new generation of programmable system clock generators. It employs serial programming I²C interface
as a vehicle for changing output functions, changing output frequency, configuring output strength, configuring output to output skew,
changing spread spectrum amount, changing group divider ratio and dis/enabling individual clocks. This device also has ICS
propriety 'Watchdog Timer' technology which will reset the frequency to a safe setting if the system become unstable from over
clocking.
Mode Pin - Power Management Input Control
MODE
(Latched Input)
0
1
Pin 3
PCI_STOP#
(Input)
REF0
(Output)
Power Groups
AVDD48 = 48MHz, Fixed PLL
AVDD = CPU PLL, XTAL
This document is confidential and should not be released
without written consent from ICS.
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