Synchronous to asynchronous to synchronous interface

Interface is a synchronous and asynchronous data transfer, to form a data transmission pipeline of each other and multiple layer. The multiple layer comprises an device of synchronously to the first layer of asynchronous data transmission, and a and asynchronous layer and is at least one of asynchronous data transmission and performing and asynchronous and movable data transmission of final-stage high speed. A synchronous clock path of the timing signal to pass through the multiple layer, a, a timing signal when an layer for starting first layer and of the last platform for operation.