Datasheet4U Logo Datasheet4U.com

ICS9248-61 - Frequency Timing Generator

Description

The ICS9248-61 is the Main clock solution for Notebook designs using the Intel 440BX style chipset.

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

Spread spectrum may be enabled by driving pin 26, SPREAD# active (Low) at power-on.

Features

  • • Generates the following system clocks: - 2CPU(2.5V) up to 100MHz. - 7 PCI(3.3V) @ 33.3MHz (Includes one free running). - 2 REF clks Fixed (3.3V) 48MHz at 14.318MHz. • Skew characteristics: - CPU – CPU.

📥 Download Datasheet

Datasheet Details

Part number ICS9248-61
Manufacturer Renesas
File Size 386.43 KB
Description Frequency Timing Generator
Datasheet download datasheet ICS9248-61 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
ICS9248-61 Frequency Generator & Integrated Buffers Integrated Circuit Systems
ICS9248-64 Frequency Generator & Integrated Buffers Integrated Circuit Systems
ICS9248-65 Frequency Generator & Integrated Buffers Integrated Circuit Systems
ICS9248-66 Frequency Generator & Integrated Buffers Integrated Circuit Systems
ICS9248-101 Frequency Generator & Integrated Buffers Integrated Circuit Systems

Other Datasheets by Renesas

Part Number Description
ICS9248-128 Frequency Generator & Integrated Buffer
ICS9248-138 Frequency Generator & Integrated Buffer
ICS9248-192 Frequency Timing Generator
ICS9248-39 Frequency Generator & Integrated Buffer
ICS9248-55 Pentium/Pro/II System Clock

Full PDF Text Transcription

Click to expand full text
ICS9248-61 Frequency Timing Generator for Pentium II Systems General Description The ICS9248-61 is the Main clock solution for Notebook designs using the Intel 440BX style chipset. Along with an SDRAM buffer such as the ICS9179-03, it provides all necessary clock signals for such a system. Spread spectrum may be enabled by driving pin 26, SPREAD# active (Low) at power-on. Spread spectrum typically reduces system EMI by 8dB to 10dB. This simplifies EMI qualification without resorting to board design iterations or costly shielding. The ICS9248-61 employs a proprietary closed loop design, which tightly controls the percentage of spreading over process and temperature variations. Block Diagram Features • Generates the following system clocks: - 2CPU(2.5V) up to 100MHz. - 7 PCI(3.3V) @ 33.
Published: |