HIGH PERFORMANCE WRAPPER CIRCUIT FOR GLOBALLY ASYNCHRONOUS LOCALLY SYNCHRONOUS SYSTEM

摘要

A high performance wrapper circuit for a GALS(Globally Asynchronous Locally Synchronous System) is provided to reduce power consumption by operating a clock only when the data is required. A delay clock generator(30) generates a clock operating a small locally synchronous module. A receiver port(20) receives a request signal according an enable signal of the small locally synchronous module and outputs a first clock stop control signal selectively according to the reception state of the enable signal before transmitting a response signal corresponding to the request signal. A sender port(10) selectively outputs a second clock stop control signal according to the reception state of the enable signal before receiving the response signal corresponding to the request signal according to the enable signal of the small locally synchronous module. A first latch(41) latches the data inputted by the data of the receiver port and transmits the data to a LS(Locally synchronous) modules.