In the multi-core systems, the data transfer between cores becomes a major challenge. The on-chip interconnect networks should be low latency, high throughput, scalability, better router or arbitration strategy, and low power consumption. An asynchronous ring bus, which is 33 bit width, adopting dual-rail single-track data protocol is proposed in this thesis. It provides not only robust but also high-speed asynchronous circuits condition. Owing to asynchronous circuits design, there are different transfer times in different hop counts. The shorter the distance is, the faster the data can be transferred. Unlink the synchronous ring bus, the bus frequency must be limited by the longest hop count latency. On the other hand, the transmission time of asynchronous circuits will not be held up by the longest distance even though the number of core is increased. For providing higher throughput, multiple cores which are able to access the bus simultaneously make a direct connection between each other. In bus arbitration, distribution arbiter is adopted to arbitrate the right to use the bus and solve the collision. Finally, the system performance in different arbitration strategies has been estimated in TSMC 0.18£gm process in this thesis. The transmission time of the shortest distance is 1.5 ns approximately, and the longest distance first has a better performance in different arbitration strategies.