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ICS9148-02

Part Number	ICS9148-02
Manufacturer	Integrated Circuit Systems
Description	Pentium/ProTM System Clock Chip
Published	Feb 6, 2006
Detailed Description	Integrated Circuit Systems, Inc. ICS9148-02 Pentium/ProTM System Clock Chip General Description The ICS9148-02 is a Cl...
Datasheet	ICS9148-02 PDF File

Overview

Integrated Circuit Systems, Inc.
ICS9148-02 Pentium/ProTM System Clock Chip General Description The ICS9148-02 is a Clock Synthesizer chip for Pentium and PentiumPro CPU based Desktop/Notebook systems that will provide all necessary clock timing.
Features include four CPU, seven PCI and eight SDRAM clocks.
Two reference outputs are available equal to the crystal frequency.
Additionally, the device meets the Pentium power-up stabilization, which requires that CPU and PCI clocks be stable within 2ms after power-up.
PWR_DWN# pin allows low power mode by stopping crystal OSC and PLL stages.
For optional power management, CPU_STOP# can stop CPU (0:3) clocks and PCI_STOP# will stop PCICLK (0:5) clocks.
CPU and IOAPIC output buffer strength controlled by CPU 3.
3_2.
5# pin to match VDDL voltage.
High drive CPUCLK outputs typically provide greater than 1 V/ns slew rate into 20pF loads.
PCICLK outputs typically provide better than 1V/ns slew rate into 30pF loads while maintaining 50±5% duty cyc...

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