ICS9161A - Integrated Circuit Systems

ICS9161A Dual Programmable Graphics Frequency Generator

The ICS9161A is a fully programmable graphics clock generator. It can generate user-specified clock frequencies using an externally generated input reference or a single crystal. The output frequency is programmed by entering a 24-bit digital word through the serial port. Two fully userprogrammable phase-locked loops are offered in a single package. One PLL .

Features

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• Pin-for-pin and function compatible with ICD2061A Dual programmable graphics clock generator Memory and video clocks are individually programmable on-the-fly Ideal for designs where multiple or varying frequencies are required Increased frequency resolution from optional predivide by 2 on the M counter Output enable feature available for tristating outputs Independent clock outputs range from 390 kHz to 120 MHz for VDD >4.75V Power-down capabilities Low power, high speed 0.8µ CMOS technology Glitch-free transitions Available in 16-pin, 300-mil SOIC or PDIP package DataSh.