ICS9250-10 Datasheet PDF - Integrated Circuit Systems Frequency Timing Generator Specs

ICS9250-10 - Frequency Timing Generator

Datasheet Summary

Description

The ICS9250-10 is a single chip clock for Intel Pentium II.

It provides all necessary clock signals for such a system.

Spread spectrum may be enabled through I2C programming.

Features

Generates the following system clocks: - 3 CPU (2.5V) 66.6/100 MHz (up to 133MHz through I2C selection) - 9 SDRAM (3.3V) up to 133MHz - 8 PCI (3.3 V) @33.3MHz - 2 IOAPIC (2.5V) @16.67 or 33.3MHz - 2 Hublink clocks (3.3 V) @ 66.6 MHz - 2 USB (3.3V) @ 48 MHz ( Non spread spectrum) - 1 REF (3.3V) @ 14.318 MHz Supports spread spectrum modulation , down spread 0 to -0.5% I2C support for power management Efficient power management scheme through PD# Uses external 14.138 MHz crystal Block D.

Datasheet Details

Part number	ICS9250-10
Manufacturer	Integrated Circuit Systems
File Size	668.08 KB
Description	Frequency Timing Generator
Datasheet	ICS9250-10 Datasheet
Additional preview pages of the ICS9250-10 datasheet.

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Full PDF Text Transcription

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Integrated Circuit Systems, Inc. ICS9250-10 Preliminary Product Preview Frequency Timing Generator for Pentium II Systems General Description The ICS9250-10 is a single chip clock for Intel Pentium II. It provides all necessary clock signals for such a system. Spread spectrum may be enabled through I2C programming. Spread spectrum typically reduces EMI by 8dB to 10 dB. This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS9250-10 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations. Features Generates the following system clocks: - 3 CPU (2.5V) 66.6/100 MHz (up to 133MHz through I2C selection) - 9 SDRAM (3.3V) up to 133MHz - 8 PCI (3.3 V) @33.

Published: Dec 11, 2005 |