ICS9248-157 Datasheet PDF - Integrated Circuit Systems Frequency Generator & Integrated Buffers Specs

ICS9248-157 - Frequency Generator & Integrated Buffers

Datasheet Summary

Description

The ICS9248-157 is the Main clock solution for Notebook designs using the Intel ALI1621/1632M style chipset.

Along with an SDRAM buffer such as the ICS9179-03, it provides all necessary clock signals for such a system.

Features

2 - CPUs @2.5V, up to 140MHz.
7 - PCI @3.3V, (including one free running).
1 - 48MHz, @3.3V fixed.
2 - REF @3.3V, 14.318MHz. Features:.
Up to 140 MHz frequency support.
Support power management: CPU, PCI stop and Power down.
Spread spectrum for EMI control (0.5% down spread).
Uses external 14.318MHz crystal.
FS pins for frequency select Key Specifications:.
CPU.
CPU:.

Datasheet Details

Part number	ICS9248-157
Manufacturer	Integrated Circuit Systems
File Size	151.43 KB
Description	Frequency Generator & Integrated Buffers
Datasheet	ICS9248-157 Datasheet
Additional preview pages of the ICS9248-157 datasheet.

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Full PDF Text Transcription

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Integrated Circuit Systems, Inc. ICS9248-157 Frequency Timing Generator for Pentium II Systems Recommended Application: ALI1621/1632M style chipsets Output Features: • 2 - CPUs @2.5V, up to 140MHz. • 7 - PCI @3.3V, (including one free running) • 1 - 48MHz, @3.3V fixed. • 2 - REF @3.3V, 14.318MHz. Features: • Up to 140 MHz frequency support • Support power management: CPU, PCI stop and Power down. • Spread spectrum for EMI control (0.5% down spread). • Uses external 14.318MHz crystal • FS pins for frequency select Key Specifications: • CPU – CPU: <175ps • PCI – PCI: <250ps • CPU(early)-PCI: 1.5ns - 4ns • PCI_E (early) - PCI: 2.

Published: Oct 7, 2005 |