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ICS9150F-02 Datasheet

  • ICS9150F-02

  • Pentium Pro™ and SDRAM Frequency Generator

  • 8頁

  • ICS

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Integrated
Circuit
Systems, Inc.
ICS9150-02
Preliminary Product Preview
Pentium Pro聶 and SDRAM Frequency Generator
General Description
The
ICS9150-02
generates all clocks required for high speed RISC
or CISC microprocessor systems such as Intel Pentium Pro. Two
different reference frequency multiplying factors are externally selectable
with smooth frequency transitions. An output enable is provided for
testability.
High drive PCICLK & SDRAM outputs typically provide greater
than 1V/ns slew rate into 30 pF loads. CPUCLK outputs typically
provide better than 1V/ns slew rate into 20pF loads while maintaining
50
鹵
5% duty cycle. The REF clock outputs typically provide better
than 0.5V/ns slew rates.
Features
聲
聲
聲
聲
聲
聲
聲
聲
Generates five processor, six bus, two 14.31818MHz and 13
SDRAM clocks.
Synchronous clocks skew matched to 250 ps window on
PCLKs and 500 ps window on BCLKs
Test clock mode eases system design
Spread Spectrum available
I
2
C interface for programming
Skew from CPU (earlier) to PCI clock -1 to 4ns, center
2.6ns
3.0V 聳 3.7V supply range
56-pin SSOP package
Pin Configuration
Block Diagram
56-Pin SSOP
Functionality
FS0
0
1
CPUCLK,
SDRAM
(M H z)
60.0
66.6
X1, REF
(M H z)
P C IC L K
(M H z)
14.318
14.318
30
3 3 .3
Pentium is a trademark of Intel Corporation
9150-02 Rev D 09/18/97
PRODUCT PREVIEW documents contain information on new
products in the sampling or preproduction phase of development.
Characteristic data and other specifications are subject to change
without notice.

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