W164 Datasheet - Cypress Semiconductor

W164 Spread Spectrum Desktop/Notebook System Frequency Generator

CPU Clock Outputs 0 through 1: These two CPU clocks run at a frequency set by SEL100/66#. Output voltage swing is set by the voltage applied to VDDQ2. PCI Clock Outputs 1 through 6 and PCI_F: These seven PCI clock outputs run synchronously to the CPU clock. Voltage swing is set by the power connecti.

W164 Features

* Maximized EMI suppression using Cypress’s Spread Spectrum technology

* Reduces measured EMI by as much as 10 dB

* I2C programmable to 153 MHz (16 selectable frequencies)

* Two skew-controlled copies of CPU output

* SEL100/66# selects CPU frequency (100 or 66

W164_CypressSemiconductor.pdf