A wafer-scale ATM switching system based on the Manhattan-street network

This paper presents a defect-tolerant wafer-scale switching system for highspeed ATM communication applications. The network topology is based on the Manhattan-street Network (MSN) which has a torus structure. In the MSN, a cell is temporarily misrouted (deflected) through the alternate output of a node if the desired output is not available. This feature, and the regularity of the MSN structure would be suitable for constructing a “defect-tolerant” wafer-scale system. We use this architecture for multipoint ATM communications, and propose the internal structure of each node. At every node, shared buffers are utilized to increase the system performance and reduce the number of deflections. A simulation for the wafer-scale system is also conducted to measure delay and average number of deflections in the presence of defective nodes