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ICS9148-25 - Pentium/Pro System and Cyrix Clock Chip

Description

The ICS9148-25 is a Clock Synthesizer chip for Pentium and PentiumPro plus Cyrix CPU based Desktop/Notebook systems that will provide all necessary clock timing.

Features

  • >.
  • Generates system clocks for CPU, IOAPIC, SDRAM, PCI, plus 14.318 MHz ), USB, Plus Super I/O Spread spectrum for CPU/SDRAM/PCI clocks default Supports single or dual processor systems Modulation of Spread Spectrum selectable as ±0.5, ±1.0, ±2.0 or none Supports Intel 60, 66.8MHz, Cyrix 55, 75MHz plus 83.3 and 68MHz (Turbo of 66.6) speeds. Synchronous clocks skew matched to 250ps window on CPU, SDRAM a.

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Datasheet preview – ICS9148-25

Datasheet Details

Part number ICS9148-25
Manufacturer ICST
File Size 434.16 KB
Description Pentium/Pro System and Cyrix Clock Chip
Datasheet download datasheet ICS9148-25 Datasheet
Additional preview pages of the ICS9148-25 datasheet.

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Full PDF Text Transcription

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www.DataSheet4U.com Integrated Circuit Systems, Inc. ICS9148-25 Pentium/ProTM System and Cyrix™ Clock Chip General Description The ICS9148-25 is a Clock Synthesizer chip for Pentium and PentiumPro plus Cyrix 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, plus the IOAPIC output powered by VDDL. Additionally, the device meets the Pentium power-up stabilization, which requires that CPU and PCI clocks be stable within 2ms after power-up. High drive PCICLK and SDRAM outputs typically provide greater than 1 V/ns slew rate into 30pF loads.
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