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ICS9248-78 Datasheet Frequency Generator & Integrated Buffers

Manufacturer: Integrated Circuit Systems

Overview: Integrated Circuit Systems, Inc. ICS9248-78 Preliminary Product Preview Frequency Timing Generator for Pentium II.

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Datasheet Details

Part number ICS9248-78
Manufacturer Integrated Circuit Systems
File Size 604.84 KB
Description Frequency Generator & Integrated Buffers
Download ICS9248-78 Download (PDF)

General Description

The ICS9248-78 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.

Key Features

  • • Generates the following system clocks: - 2 - CPUs @ 2.5V, up to 150MHz. - 1 - IOAPIC @ 2.5V, PCI/2MHz. - 9 SDRAMs (3.3V), up to150MHz. -2 - 3V66 @ 3.3V, 2x PCIMHz. - 8 - PCIs @ 3.3V. - 1 - 48MHz, @ 3.3V fixed. - 2 - REF @ 3.3V, 14.318Hz. - 1 - 24MHz, @ 3.3V fixed. Supports spread spectrum modulation , down spread 0 to -0.5%, ±0.25% center spread. I2C support for power management. Efficient power management scheme through PD#. Uses external 14.138 MHz crystal. • • • • Block Diagram Pin Confi.

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