ICS9248-103 Datasheet PDF - Integrated Circuit Systems Frequency Generator & Integrated Buffers Specs

ICS9248-103 - Frequency Generator & Integrated Buffers

Datasheet Summary

Description

The ICS9248-103 is the single chip clock solution for Notebook designs using the 440BX or the VIA Apollo Pro 133 style chipset.

It provides all necessary clock signals for such a system.

Spread spectrum may be enabled through I2C programming.

Features

Up to 137MHz frequency support Spread Spectrum for EMI control Serial I2C interface for Power Management, Frequency Select, Spread Spectrum Provides the following system clocks - 4-CPUs @ 2.5/3.3V, up to 137MHz (including CPUCLK_F) - 9-SDRAMs @3.3V, up to 137MHz (including SDRAM_F) - 8-PCI @3.3V, CPU/2 or CPU/3 (including 3 free running PCICLK_Fs) - 1-24/48MHz @3.3V - 1-48MHz @3.3V fixed - 2-REF @3.3V, 14.318MHz. Efficient Power management scheme through PCI and STOP CLOCKS Spread Spectr.

Datasheet Details

Part number	ICS9248-103
Manufacturer	Integrated Circuit Systems
File Size	392.45 KB
Description	Frequency Generator & Integrated Buffers
Datasheet	ICS9248-103 Datasheet
Additional preview pages of the ICS9248-103 datasheet.

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Full PDF Text Transcription

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Integrated Circuit Systems, Inc. ICS9248-103 Frequency Generator & Integrated Buffers for PENTIUM/ProTM General Description The ICS9248-103 is the single chip clock solution for Notebook designs using the 440BX or the VIA Apollo Pro 133 style chipset. It provides all necessary clock signals for such a system. Spread spectrum may be enabled through I2C programming. Spread spectrum typically reduces system EMI by 8dB to 10dB. This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS9248-103 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations.

Published: Oct 7, 2005 |