DATASHEET

LOCO™ PLL CLOCK MULTIPLIER

ICS502

IDT™ / ICS™ LOCO™ PLL CLOCK MULTIPLIER

1

ICS502

REV M 051310

Description

generate a high-quality, high-frequency clock output and a

reference from a lower frequency crystal or clock input. The

name LOCO stands for Low Cost Oscillator, as it is

designed to replace crystal oscillators in most electronic

systems. Using Phase-Locked Loop (PLL) techniques, the

device uses a standard fundamental mode, inexpensive

crystal to produce output clocks up to 160 MHz.

Stored in the chip’s ROM is the ability to generate six

different multiplication factors, allowing one chip to output

many common frequencies (see table on page 2).

This product is intended for clock generation. It has low

output jitter (variation in the output period), but input to

output skew and jitter are not defined or guaranteed. For

applications which require defined input to output skew, use

the ICS570B.

Features

Block Diagram

PLL Clock

M ultiplier

Circuitry and

ROM

Crystal or

Clock input

VDD

Crystal

OScillator

S1, S0

X1/ICLK

X2

2

CLK

REF

GND