Interface apparatus and method for packet data communications

Details Interface apparatus and method for packet data communications Interface apparatus and method for packet data communications

H - Electricity

04

L

H04L 12/56 (2006.01) G06F 12/00 (2006.01)

Patent

CA 2288342

A switch interface connected between a fibre optic cable and a switching fabric includes a line interface block, a fabric interface block, and ingress and egress data transfer blocks coupled independently between the line interface and fabric interface blocks. The ingress data transfer block has a cross-connection block connected to the line interface block, four memories, two processors, and the fabric interface block. With use of the cross-connection block, at any one time, one memory is coupled to the line interface block, one memory is coupled to one processor, one memory is coupled to the other processor, and the last memory is coupled to the fabric interface. Controlled by a memory control, the memories rotate which block each is coupled to, so that each memory is coupled to every block within a single cycle. Therefore, data information units traversing the ingress data transfer block do not require to be transferred between memories during the processing stages. The egress data transfer block operates in a similar fashion.

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