ICS9248-151 Datasheet, PDF (3/14 Pages) Integrated Circuit Systems – Frequency Generator & Integrated Buffers for Celeron & PII/III™

ICS9248-151
General Description
The ICS9248-151 is a single chip clock solution for Desktop
designs. It provides all necessary clock signals 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 ICS9248-151
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
AVDD, AGND = Core PLL
AVDD48, AGND48 = 24, 48MHz and fixed PLL
VDDREF, GNDREF = REF clocks, Xtal
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