General Description

The ICS9169A-70 is a low-cost frequency generator designed specifically for workstation or PC system clocks. 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 timing of internal microprocessor clock multipliers.

Features

• 9 PCI outputs selectable from 30 to 66.6MHz

• 3 SCSI outputs, selectable from 10 to 80MHz

• 500ps skew window for all synchronous clock edges

• Integrated buffer outputs drive up to 30pF loads

• 500ps output to output skew window

• Buffers drive 30pF loads nominally 0.8V/ns skew rate

• 3.0V - 3.7Vsupply range

• 32-pin SOIC package

• 48 MHz clock for USB support and 24 MHz clock for FD