ICS9248-168 Datasheet, PDF (3/14 Pages) Integrated Circuit Systems – AMD - K7™ Clock Generator for Mobile System

ICS9248-168
General Description
The ICS9248-168 is a main clock synthesizer chip for AMD-K7 based note book systems with VIA style chipset. This provides
all clocks required for such a system.
Spread spectrum may be enabled through I²C programming. Spread spectrum typically reduces system EMI by 8dB to 10dB.
This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS9248-168
employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature
variations.
Serial programming I²C interface allows changing functions, stop clock programming and frequency selection.
Power Groups
VDD48 = 48MHz, Fixed PLL
VDDA = VDD for Core PLL
VDDREF = REF, Xtal
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