Sun Microsystems, Inc.

Oracle America, Inc.

Knut Tvete

Hans Rygh

Bjorn Dag Johnsen

Morten Schanke

Steinar Forsmo

Ali Bozkaya

A method of providing switch arbitration for the passing of packets between transmitters and receivers in a switch having a plurality of transmitters and receivers, comprises globally distributing information about buffer contents and packet requests between transmitters and receivers.

Switch arbitration

A communications chip having a plurality of ports. Each port is provided with an interface for attachment to an external communications facility to exchange data traffic. There is also a switching matrix for routing data traffic on the chip between the ports. The chip further includes a plurality of logic analyzers. Each logic analyzer is associated with a corresponding one of the ports. Each logic analyzers is operable to monitor data traffic passing through its corresponding port and to trigger on one or more predetermined conditions relating to the monitored data traffic. The chip further includes a control interface to allow reconfiguration of the predetermined conditions for at least one of the logic analyzers.

Communications chip having a plurality of logic analysers

There is described an apparatus and method for implementing a communications port. The apparatus comprises a core, which is operable to divide the port into a plurality of sub-ports by dividing a data transfer capacity of the port among the plurality of sub-ports using time division multiplexing. Each sub-port is allocated a corresponding data transfer capacity.

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Lovenstad, Norway

Knut Tvete