W133 Datasheet - Cypress Semiconductor

W133 Spread Spectrum System Frequency Synthesizer

CPU Clock Outputs 0 through 3: These four CPU clocks run at a frequency set by SEL133/100#. Output voltage swing is set by the voltage applied to VDDQ2. Synchronous Memory Reference Clock Output 0 through 1: Reference clock for Direct RDRAM clock generators running at 1/2 CPU clock frequency. Output.

W133 Features

* Maximized EMI suppression using Cypress’s spread spectrum technology

* Intel CK98 Specification compliant

* 0.5% downspread outputs deliver up to 10 dB lower EMI

* Four skew-controlled copies of CPU output

* Eight copies of PCI output (synchronous w/CPU outp

W133_CypressSemiconductor.pdf