Abstract: To solve the problem of easily blocking and the waste of routing resources of asynchronous network-on-chip (NoC) using determined routing algorithm， an adaptive routing algorithm suitable for asynchronous NoC using 2D-Torus topology was proposed based on the asynchronous circuit design methodology. A test platform was established， and the function and performance of the asynchronous NoC were analyzed， verified and tested. The experimental result indicates that the adaptive routing algorithm proposed can meet the requirement of self-adaptive routing， and can effectively reduce the transport delay. The asynchronous NoC system proposed supports multi-directional data communication， multi-channel parallel data communication and equal arbitration of data request， and it can call the IP core to perform the corresponding data processing.

Key words: NoC, asynchronous, 2D-Torus, routing algorithm, adaptive