Implements a 64-port memory switch fabric with STS-1/AU-3 switching granularity and scaling capability in a single device. With a set of four devices, implements a 640 G 256-port single-stage switch fabric. With a set of two devices, implements a 320 G 128-port single-stage switch fabric. Supports non-blocking anycast switching in all single stage configurations. Supports fabric capacities greater than 640 G using multi-stage fabrics.