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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 addr

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.

대표청구항 ▼

An expandable, self routing switching fabric for identifiably routing data packets in an ATM switch comprising: a plurality of input ports and a plurality of output ports for routing a packet from an input source coupled to one of said input ports to an output destination coupled to one of said outp

An expandable, self routing switching fabric for identifiably routing data packets in an ATM switch comprising: a plurality of input ports and a plurality of output ports for routing a packet from an input source coupled to one of said input ports to an output destination coupled to one of said output ports on a selected circuit through the fabric specified by the packet; and, a crosspoint array of state machines, each state machine disposed at an internal intersection of an input port and an output port, wherein each state machine has a predetermined identity representative of a singular one of the output ports and means for routing the packet to the singular one of the output ports and wherein each state machine futher includes a means for comparing the identity to an address header of each data packet and for setting each state machine active/connected when the comparing determines a match between the identity and the address header and for setting each state machine not active/disconnected when the comparing determines a non-match between the identity and the address header, whereby the selected circuit through the fabric to a desired output port comprises an active/connected state machine defined by the address for connecting the one of the input ports to the one of said output ports.