A self-arbitrating and self-routing ATM (Asynchronous Transfer Mode) switch has a switching fabric consisting of rows and columns of logic groups. The rows of logic groups have addressing logic for routing data packets received at input ports to the columns of logic groups. Arbitration logic in each...http://www.google.com.au/patents/US5930256?utm_source=gb-gplus-sharePatent US5930256 - Self-arbitrating crossbar switch