ICS9169C-271 - Integrated Circuit Systems

ICS9169C-271 Frequency Generator

The ICS9169C-271 is a low-cost frequency generator designed specifically for Pentium based chip set systems. The integrated buffer minimizes skew and provides all the clocks required. A 14.318 MHz XTAL oscillator provides the reference clock to generate standard Pentium frequencies. The CPU clock makes gradual frequency transitions without violating the PLL .

Features

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• Twelve selectable CPU clocks operate up to 83.3MHz Maximum CPU jitter of ± 200ps Six BUS clocks support sync or async bus operation ±250ps skew for all synchronous clock edges CPU clocks BUS clocks skew 1-4ns (CPU early) Integrated buffer outputs drive up to 30pF loads 3.0V - 3.7V supply range, CPU(1:12) outputs 2.5V(2.375-2.62V) VDD option 32-pin SOIC/SOJ package Logic inputs latched at Power-On for frequency selection saving pins as Input/Output 48 MHz clock for USB support and 24 MHz clock for FD. Pin Configuration Block Diagram DataSheet4U.com DataShee 32-Pin SOIC/S.