| 摘要 |
Apparatus and method of operating a crossbar switch (1) having a control logic, an output port scheduler (2), n input ports (i-0, . . . , i-31) and m output ports (o-0, . . . , o-31), wherein information packets are routed from said n input ports to said m output ports, and wherein said output port scheduler (2) controls the sequence of packets output at said output ports (o-0, . . . , o-31). To ensure fairness regarding packet transfer/routing and the packet sequence, an input port number corresponding to the input port a new information packet is arriving at is stored in round-robin mode in a port number buffer (pnb-0). For output, said input port number is retrieved from said port number buffer (pnb-0) in round robin mode, too, and with this port number, address information regarding the packet is obtained from a control logic buffer of the crossbar switch (1).
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