W147 Datasheet (Cypress Semiconductor)

W147, Frequency Generator

W147G Reference Clock: 3.3V 14.318-MHz clock output.

This pin doubles as the select strap for APIC clock frequency.

If strapped LOW during power up, APIC clock runs at half PCI clock speed.

Otherwise, APIC clocks run at PCI clock speed.

Crystal Input: This pin has dual functions.

It can be used as

W147 Features

* Maximized EMI suppression using Cypress’s Spread Spectrum Technology

* Low jitter and tightly controlled clock skew

* Highly integrated device providing clocks required for CPU, core logic, and SDRAM

* Three copies of CPU clock at 66/100 MHz

* Nine copies of