ICS9169A-70 Datasheet, PDF (1/7 Pages) Integrated Circuit Systems – Frequency Generator for Workstation Systems

Integrated
Circuit
Systems, Inc.
ICS9169A-70
Frequency Generator for Workstation Systems
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
Pin Configuration
Block Diagram
32-Pin SOIC
9169A-70 Rev B 2/14/01
ICS reserves the right to make changes in the device data identified in this
publication without further notice. ICS advises its customers to obtain the latest
version of all device data to verify that any information being relied upon by the
customer is current and accurate.