ICS9248-127 Datasheet PDF - Integrated Circuit Systems Frequency Generator & Integrated Buffers Specs

ICS9248-127 - Frequency Generator & Integrated Buffers

Datasheet Summary

Description

The ICS9248-127 is the single chip clock solution for Desktop designs using the VIA MVP4 and Aladdin 7 style chipset.

It provides all necessary clock signals for such a system.

Spread spectrum may be enabled through I2C programming.

Features

Up to 124MHz frequency support. Spread Spectrum for EMI control 0 to -0.5% down spread and ±0.25% center spread Serial I2C interface for Power Management, Frequency Select, Spread Spectrum. Provides the following system clocks - 4-CPUs @ 3.3V, up to 124MHz. - 13-SDRAMs @3.3V, up to 124MHz (including SDRAM_F) - 6-PCI (including 1 free running, PCICLK_F) @3.3V, CPU/2 or CPU/3. - 1-24MHz @3.3V fixed. - 1-48MHz @3.3V fixed. - 2-REF @3.3V, 14.318MHz. Efficient.

Datasheet Details

Part number	ICS9248-127
Manufacturer	Integrated Circuit Systems
File Size	280.86 KB
Description	Frequency Generator & Integrated Buffers
Datasheet	ICS9248-127 Datasheet
Additional preview pages of the ICS9248-127 datasheet.

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Full PDF Text Transcription

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Integrated Circuit Systems, Inc. ICS9248-127 Frequency Generator & Integrated Buffers for PENTIUM/ProTM General Description The ICS9248-127 is the single chip clock solution for Desktop designs using the VIA MVP4 and Aladdin 7 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 ICS9248127 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations. Features • • • • Up to 124MHz frequency support. Spread Spectrum for EMI control 0 to -0.5% down spread and ±0.

Published: Oct 7, 2005 |