Arm Limited

Ian David Andrews

Andrew David Tune

Daniel Adam Sara

George Robert Scott Lloyd

A crossbar switch comprises two or more data inputs, two or more data outputs, a bufferbetween the inputs and the outputs, an arbiterassociated with each output and configured to select data from one of the inputs when there is contention at the output, a bypassassociated with the buffer so that the buffer can be enabled or disabled, and a buffer controllerconfigured to enable or disable the buffer. The buffer controller further includes an accumulatorconfigured to assess whether a time-based average of the contention rate, or an average injection rate, at the output associated with the buffer, has reached a predetermined threshold. This prevents the buffer being enabled when the contention is only intermittent, which reduces power consumption without significant loss of performance.

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Sheffield, United Kingdom

Ian David Andrews