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ICS9148-12 - Pentium/ProTM System Clock Chip

General Description

The ICS9148-12 is a Clock Synthesizer chip for Pentium and PentiumPro CPU based Desktop/Notebook systems that will provide all necessary clock timing.

Key Features

  • include four strong CPU, seven PCI and eight SDRAM clocks. Two reference outputs are available equal to the crystal frequency. Stronger drive CPUCLK outputs typically provide greater than 1 V/ns slew rate into 20pF loads. This device meets rise and fall requirements with 2 loads per CPU output (ie, one clock to CPU and NB chipset, one clock to two L2 cache inputs). PWR_DWN# pin allows low power mode by stopping crystal OSC and PLL stages. For optional power management, CPU_STOP# can stop CPU (0:.

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Datasheet Details

Part number ICS9148-12
Manufacturer Integrated Circuit Systems
File Size 743.88 KB
Description Pentium/ProTM System Clock Chip
Datasheet download datasheet ICS9148-12 Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Integrated Circuit Systems, Inc. ICS9148-12 Pentium/ProTM System Clock Chip General Description The ICS9148-12 is a Clock Synthesizer chip for Pentium and PentiumPro CPU based Desktop/Notebook systems that will provide all necessary clock timing. Features include four strong CPU, seven PCI and eight SDRAM clocks. Two reference outputs are available equal to the crystal frequency. Stronger drive CPUCLK outputs typically provide greater than 1 V/ns slew rate into 20pF loads. This device meets rise and fall requirements with 2 loads per CPU output (ie, one clock to CPU and NB chipset, one clock to two L2 cache inputs). PWR_DWN# pin allows low power mode by stopping crystal OSC and PLL stages.