2

ICS9250-23

0391B—09/18/03

General Description

Pin Configuration

N

I

P

R

E

B

M

U

N

E

M

A

N

N

I

PE

P

Y

TN

O

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2

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7

3

,

3

3

,

2

3

,

5

2

5

4

D

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W

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y

l

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31

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4

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3

.

3

The ICS9250-23 is a single chip clock solution for desktop designs using the 810/810E style chipset. It provides all

necessary clock signals for such a system.

Spread spectrum may be enabled through I

2C programming. Spread spectrum typically reduces system EMI by 8dB

to

10dB. This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS9250-

23

employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and

temperature variations.

Serial programming I

2C interface allows changing functions, stop clock programming and frequency selection.