Hewlett Packard Enterprise Development LP

Aruba Networks, Inc.

Shiro Suzuki

Jonathan Greenlaw

Mark Shillingburg

An example arbiter circuit for a crossbar may include request circuits corresponding respectively to ingress ports of the crossbar; grant circuits corresponding respectively to egress ports of the crossbar; a request register; and a grant register. Each of the request circuits may be to request a connection between its corresponding ingress port and a target by writing an encoded identifier of the target to the request register. Each of the grant circuits may be to grant a connection between its corresponding egress port and one of the ingress ports by writing an encoded identifier of the ingress port to the grant register.

Arbiter circuit for crossbar

Examples herein relate to crossbar switches and related circuitry. An example crossbar switch includes a plurality of abutted tiles forming a crossbar. The plurality of abutted tiles includes a plurality of edge tiles and at least one middle tile, where each side of each middle tile abuts an edge tile or another middle tile. Each middle tile includes data inputs connected to data outputs, switched data inputs connected to switched data outputs, and pipeline delay registers coupled to data inputs and switched data outputs to allow transmission of a data signal to change directions inside each middle tile. Each edge tile includes a crossbar input, a crossbar output, and a set of inputs, outputs, and pipeline delay registers to allow transmission of data signals from any side of the edge tile to any other side of the edge tile.

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Roseville, CA, United States of America

Shiro Suzuki