PRELIMINARY INFORMATION
ICS604
Intel Graphics Clock Source
Description
The ICS604 is the most cost effective way to
generate high quality, high frequency clocks for
Intel鈥檚 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.
Features
鈥?Packaged as 8 pin SOIC or die
鈥?Compatible with Intel graphics controllers
鈥?Zero ppm synthesis error on 48 MHz output
鈥?Input frequency of 14.31818 MHz
鈥?Output clock frequencies of 48 MHz,
24.576 MHz, plus 14.31818 MHz Reference
output
鈥?Low jitter
鈥?Operating voltages of 3.0 to 5.5 V
鈥?Full CMOS-level outputs with 25 mA drive
capability at TTL levels
鈥?Advanced, low power CMOS process
Block Diagram
VDDC GND
VDDIO
PLL
Clock
Synthesis
and Control
Circuitry
14.318 MHz
crystal or clock
X1/ICLK
Output
Buffer
48 MHz
Output
Buffer
24.576 MHz
Crystal
Oscillator
X2
Output
Buffer
14.318 MHz
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Revision 022499
Printed 11/14/00
Integrated Circuit Systems 鈥?525 Race Street 鈥?San Jose 鈥?CA 鈥?95126 鈥?408)295-9800tel鈥?408)295-9818fax
MDS 604 A
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