3

ICS951702

Advance Information

0664—07/29/02

General Description

The ICS951702 is a main clock synthesizer chip for PIII based systems with ALI 1644 style chipset. This provides all

clocks required for such a system.

Spread spectrum may be enabled through I

to 10dB. This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS951702

employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and

temperature variations.

Serial programming I

Mode Pin - Power Management Input Control

Power Groups

AVDD = PLL Core & Xtal

VDD48 = 48MHz, PLL2

VDDL, VDD = Digital

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