ICS604

Intel Graphics Clock Source

MDS 604 A

1

Revision 022499

Printed 11/14/00

Integrated Circuit Systems • 525 Race Street • San Jose • CA • 95126 •(408)295-9800tel•(408)295-9818fax

PRELIMINARY

INFORMATION

• Packaged as 8 pin SOIC or die

• Compatible with Intel graphics controllers

• Zero ppm synthesis error on 48 MHz output

• Input frequency of 14.31818 MHz

• Output clock frequencies of 48 MHz,

24.576 MHz, plus 14.31818 MHz Reference

output

• Low jitter

• Operating voltages of 3.0 to 5.5 V

• Full CMOS-level outputs with 25 mA drive

capability at TTL levels

• Advanced, low power CMOS process

The ICS604 is the most cost effective way to

generate high quality, high frequency clocks for

Intel’s latest generation of graphics controllers. It

provides 48 MHz for the graphics controller, a

24.576 MHz clock for video or audio, as well as a

14.31818 MHz buffered output for the system

clock. Using patented Phase-Locked-Loop (PLL)

techniques, the ICS604 requires only a standard

fundamental mode, inexpensive crystal.

ICS makes additional devices to meet multiple

graphic system requirements. If the 24.576 MHz

clock is not needed, use the ICS513. If additional

frequencies are required for different video

encoders and decoders, see the ICS614-01.

Block Diagram

Description

Features

14.318 MHz

48 MHz

24.576 MHz

Crystal

Oscillator

VDDC GND

PLL

Clock

Synthesis

and Control

Circuitry

14.318 MHz

crystal or clock

Output

Buffer

X1/ICLK

X2

Output

Buffer

Output

Buffer

VDDIO