METHOD AND SYSTEM FOR CLOCK DOMAIN CROSSING AND FORMAT ADAPTATION USING SYNCHRONOUS HANDSHAKE PROTOCOL

摘要

A method for optimizing a data processing chain using synchronous handshake protocol by adapting the operating frequency and the data format between an upstream block, having an upstream operating frequency and an upstream data format, and a downstream block, having a downstream operating frequency and a downstream data format. The upstream block generates an upstream RTS signal and an upstream clock signal, and the downstream block generates a downstream RTR signal and a downstream clock signal. The method of the present invention comprises the steps of: receiving the upstream RTS signal, the upstream clock signal, the downstream RTR signal and the downstream clock signal; generating an upstream adaptation RTR signal when ready to receive data from the upstream block; receiving data from the upstream block in the upstream data format when the upstream adaptation RTR signal are active; transforming the data from the upstream data format to the downstream data format; generating a downstream adaptation RTS signal when ready to send data to the downstream block; and sending the data to the downstream block in the downstream data format when the downstream RTR signal and the downstream adaptation RTR signal are active.