Ati International Srl

David Y K Ho

David Chih

Minghua Zhu

Charles Y W Leung

A FIFO memory device, FIFO control method and graphics processing system are disclosed which incorporate spread-spectrum EMI compensation. In one embodiment, a FIFO memory device and method includes generating a spread-spectrum adjustment signal for a spread-spectrum FIFO based on an address offset associated with a read and write address associated with a spread-spectrum FIFO. The method includes adjusting the spread-spectrum clock signal in response to the spread-spectrum adjustment signal based on the address offset associated with the read and write address. A spread-spectrum FIFO receives data from a data source, such as a graphics data source, which may include a memory such as a RAMDAC. The data can be provided by a display engine or other suitable information provider. The spread-spectrum FIFO is operatively responsive to both a spread-spectrum clock signal and another clock signal to suitably adjust an output frequency of data read from the spread-spectrum FIFO using fewer than two complete display paths and associated circuitry and operations.

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Thornhill, Canada

David Y K Ho