Integrated

Circuit

Systems, Inc.

General Description

Features

ICS9179-06

Block Diagram

PentiumPro is a trademark of Intel Corporation

I

Zero Delay Buffers

9179-06 Rev F 6/22/99

Pin Configuration

The ICS9179-06 generates low skew clock buffers required

for high speed RISC or CISC microprocessor systems such as

Intel PentiumPro. An output enable is provided for testability.

The device is a buffer with low output to output skew. This is

a zero delay buffer device, using an internal PLL. This buffer

can be used for phase synchronization to a master clock. With

the wide PLL loop BW, this buffer is compatible to Spread

Spectrum input clocks from clock generator products such as

the ICS9148-27.

enabled, or stopped in a low state for reduced EMI when the

lines are not needed. The device defaults to zero-delay mode,

+2.0, -0.7 ns (nominal target values).

Spread Spectrum applications.

skew -2.7, +2.0, -0.7ns nominal.

output.

clocks to be stopped, or selectable delays.

(FB_OUT stays running).

48-Pin SSOP

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.

Functionality

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