Integrated

Circuit

Systems, Inc.

General Description

Features

ICS9150-01

Block Diagram

Pentium is a trademark of Intel Corporation

Pentium Pro™ and SDRAM Frequency Generator

9150-01 RevE 4/25/01

Pin Configuration

The ICS9150-01 generates all clocks required for high speed

RISC or CISC microprocessor systems such as Intel

PentiumPro. Two different reference frequency multiplying

factors are externally selectable with smooth frequency

transitions. An output enable is provided for testability.

High drive PCICLK and SDRAM outputs typically provide

greater than 1 V/ns slew rate into 30 pF loads. CPUCLK

outputs typically provide better than 1V/ns slew rate into

clock outputs typically provide better than 0.5V/ns slew rates.

•

Generates five processor, six bus, one 14.31818MHz

and 16 SDRAM clocks.

•

Synchronous clocks skew matched to 250 ps window

on PCLKs and 500ps window on BCLKs

•

Test clock mode eases system design

•

Selectable multiplying ratios

•

Custom configurations available

•

Output frequency ranges to 100 MHz (depending on

option)

•

3.0V – 3.7V supply range

•

PC serial configuration interface

•

Power Management Control Input pins

•

56-pin SSOP package

56-Pin SSOP

Functionality

0

S

F

,

K

L

C

U

P

C

M

A

R

D

S

)

z

H

M

(

F

E

R

,

1

X

)

z

H

M

(

K

L

C

I

C

P

)

z

H

M

(

00

.

0

68

1

3

.

4

10

3

16

.

6

68

1

3

.

4

13

.

3

3

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.