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ICS951901

ICS
Part Number ICS951901
Manufacturer ICS
Description Programmable Frequency Generator & Integrated Buffers
Published Jan 13, 2008
Detailed Description www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS951901 Programmable Frequency Generator & Integrated Buffers ...
Datasheet PDF File ICS951901 PDF File

ICS951901
ICS951901

Overview
www.
DataSheet4U.
com Integrated Circuit Systems, Inc.
ICS951901 Programmable Frequency Generator & Integrated Buffers for Pentium III Processor Recommended Application: Single chip clock solution for IA platform.
Output Features: • 3 - CPU @ 2.
5V • 13 - SDRAM @ 3.
3V • 6 - PCI @3.
3V, • 2 - AGP @ 3.
3V • 1 - 48MHz, @3.
3V fixed.
• 1 - 24/48MHz, @3.
3V selectable by I2C (Default is 24MHz) • 2 - REF @3.
3V, 14.
318MHz.
Features: • Programmable ouput frequency.
• Programmable ouput rise/fall time.
• Programmable SDRAM and CPU skew.
• Spread spectrum for EMI control typically by 7dB to 8dB, with programmable spread percentage.
• Watchdog timer technology to reset system if over-clocking causes malfunction.
• Uses external 14.
318MHz crystal.
• FS pins for frequency select Skew Specifications: • CPU - CPU: < 175ps • SDRAM - SDRAM < 250ps (except SDRAM12) • PCI - PCI: < 500ps • CPU (early) - PCI: 1-4ns (typ.
2ns) Pin Configuration VDDA *(AGPSEL)REF0 1 *(FS3)REF1 GND X1 X2 VDDPCI *(FS1)PCICLK_F *(...


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