ICS9148-47 - Pentium/ProTM System Clock Chip

Product Overview

Integrated Circuit Systems

Part number	ICS9148-47
Manufacturer	Integrated Circuit Systems
File Size	244.64 KB
Description	Pentium/ProTM System Clock Chip
Datasheet	ICS9148-47 Datasheet
Additional preview pages of the ICS9148-47 datasheet.

The ICS9148-47 is part of a reduced pin count two-chip clock solution for designs using an Intel BX style chipset.

Companion SDRAM buffers are ICS9179-11 and 12.

There are two PLLs, with the first PLL capable of spread spectrum operation.

Generates system clocks for CPU, PCI, IOAPIC , 14.314 MHz, 48 and 24MHz. Supports single or dual processor systems Skew from CPU (earlier) to PCI clock 1 to 4ns Separate 2.5V and 3.3V supply pins 2.5V outputs: CPU, IOAPIC 3.3V outputs: PCI, REF No power supply sequence requirements 28 pin SOIC Spread Sectrum operation optional for PLL1 CPU frequencies to 100MHz are supported. Pin Configuration Block Diagram 28 pin SOIC Power Groups VDD = Supply for PLL core VDD1 = REF0, X.

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Published: Feb 6, 2006 |