Self routing crossbar switch suitable for use as a switching fab

Details Self routing crossbar switch suitable for use as a switching fab Self routing crossbar switch suitable for use as a switching fab

1994-11-15

1997-02-11

Olms, Douglas W.

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370411, H04L 1256

Patent

active

056028440

ABSTRACT:
An expandable, self routing switching fabric routes data packets in an ATM switch. A crosspoint array of state machines disposed at internal intersections of input ports and output ports have predetermined identities representative of the output ports and include a comparator for identifying an address header of each data packet with the state machine identity. When a match occurs, the state machine is set active/connected and when a non-match occurs, the state machine is set not-active/disconnected. A circuit through the fabric is set by connection between an input port through an active/connected state machine to a desired output port. The predetermined identity of each state machine comprises a hard wired bit sequence common to the column including the state machines.

REFERENCES:
patent: 5179552 (1993-01-01), Chao
patent: 5305311 (1994-04-01), Lyles
patent: 5327420 (1994-07-01), Lyles
patent: 5430715 (1995-07-01), Corbalis et al.

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