ICS9248-39 Datasheet PDF - Integrated Circuit Systems Frequency Generator & Integrated Buffers Specs

ICS9248-39 - Frequency Generator & Integrated Buffers

Datasheet Summary

Description

The ICS9248-39 generates all clocks required for high speed RISC or CISC microprocessor systems such as Intel PentiumPro or Cyrix.

Eight different reference frequency multiplying factors are externally selectable with smooth frequency transitions.

Features

include two CPU, six PCI and thirteen SDRAM clocks. Two reference outputs are available equal to the crystal frequency. Plus the IOAPIC output powered by VDDL1. One 48 MHz for USB, and one 24 MHz clock for Super IO. Spread Spectrum built in at ±0.5% or ±0.25% modulation to reduce the EMI. Serial programming I2C interface allows changing functions, stop clock programing and Frequency selection. Additionally, the device meets the Pentium power-up stabilization, which requires that CPU and PCI cloc.

Datasheet Details

Part number	ICS9248-39
Manufacturer	Integrated Circuit Systems
File Size	292.08 KB
Description	Frequency Generator & Integrated Buffers
Datasheet	ICS9248-39 Datasheet
Additional preview pages of the ICS9248-39 datasheet.

📁 Similar Datasheet

ICS9248-39 - Frequency Generator & Integrated Buffer (Renesas)

ICS9248-128 - Frequency Generator & Integrated Buffer (Renesas)

ICS9248-138 - Frequency Generator & Integrated Buffer (Renesas)

ICS9248-192 - Frequency Timing Generator (Renesas)

ICS9248-55 - Pentium/Pro/II System Clock (Renesas)

ICS9248-61 - Frequency Timing Generator (Renesas)

ICS9248-77 - Frequency Timing Generator (Renesas)

ICS9248-80 - General Purpose 133MHz System Clock (Renesas)

ICS9248-81 - Frequency Generator & Integrated Buffer (Renesas)

ICS9248-87 - Frequency Generator & Integrated Buffer (Renesas)

Full PDF Text Transcription

Click to expand full text

Integrated Circuit Systems, Inc. ICS9248-39 Frequency Generator & Integrated Buffers for PENTIUM/ProTM General Description The ICS9248-39 generates all clocks required for high speed RISC or CISC microprocessor systems such as Intel PentiumPro or Cyrix. Eight different reference frequency multiplying factors are externally selectable with smooth frequency transitions. Features include two CPU, six PCI and thirteen SDRAM clocks. Two reference outputs are available equal to the crystal frequency. Plus the IOAPIC output powered by VDDL1. One 48 MHz for USB, and one 24 MHz clock for Super IO. Spread Spectrum built in at ±0.5% or ±0.25% modulation to reduce the EMI. Serial programming I2C interface allows changing functions, stop clock programing and Frequency selection.

Published: Oct 7, 2005 |