Arteris, Inc.

Boon Chuan

John D Coddington

A system and methods of use for a broadcast switch system, broadcast management switching system, and methods of use in network-on-chip are presented. The invention relates generally to broadcasting transactions in a network-on-chip (NoC). More specifically, and without limitation, the invention provides for transacting from master to multiple slaves and for receiving responses. The invention relates to a broadcast switch for broadcasting transactions. More specifically, and without limitation, the invention relates to a broadcast switch system, broadcast management switching system, and methods of use in NoC.

Network-on-chip (NoC) with a broadcast switch system

In a network-on-chip (NoC) interconnect connected to one or more agents with multiple input ports, one or more switches are provided with a round robin arbiter constructed to use representations of the input ports and, in some embodiments, the current round robin state, as thermometer codes. By using thermometer code to represent port information, the correspondence to the current input and the current state to be granted can be rapidly determined through a simple two-step AND and XOR operations. With such a simple logical procedure, the number of steps to make the determination, and therefore the energy required, can be reduced by log 2(n) steps or up to 43%. Using thermometer code reduces the number of computations required. Hence, the number of logic circuit elements required to carry out the calculation is reduced, shrinking the floorplan area needed for the arbiter.

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Scotts Valley, CA, United States of America

Boon Chuan