System for arbitrating between multiple flows

An arbitration system for arbitrating between a plurality of flows for access to a shared resource, wherein the plurality of flows are associated with a plurality of channels, the arbitration system comprising:

• first and second storage circuits that are configured to store first and second priority tables that include a plurality of flow data associated with the plurality of flows and a plurality of channel data associated with the plurality of channels, respectively;
• a processing circuit that is configured to identify, from the plurality of flows, a set of flows that are arbitrating for access to the shared resource, wherein the set of flows includes first and second subsets of flows associated with first and second channels of the plurality of channels, respectively;
• first and second selection circuits, wherein the first selection circuit is coupled with the first storage circuit and the processing circuit, and configured to select, for accessing the shared resource, first and second flows from the first and second subsets of flows, respectively, and the second selection circuit is coupled with the second storage circuit and the processing circuit, and configured to select, for accessing the shared resource, one of the first and second channels:
• a flow controller that is coupled with the first selection circuit and the first storage circuit, and configured to access the first storage circuit to read first and second flow data associated with the selected first and second flows, respectively, and output the first and second flow data;
• and
• a channel controller that is coupled with the flow controller and the second selection circuit, and configured to receive the first and second flow data, and output, based on the selected channel, one of the first and second flow data for granting one of the corresponding first and second flows access to the shared resource.

A system-on-chip, comprising,

• a shared resource;
• an arbitration system that is configured to arbitrate between a plurality of flows for access to the shared resource, wherein the plurality of flows are associated with a plurality of channels, the arbitration system comprising:
• first and second storage circuits configured to store first and second priority tables that include a plurality of flow data associated with the plurality of flows and a plurality of channel data associated with the plurality of channels, respectively;
• a processing circuit that is configured to identify, from the plurality of flows, a set of flows that are arbitrating for access to the shared resource, wherein the set of flows includes first and second subsets of flows associated with first and second channels of the plurality of channels, respectively;
• first and second selection circuits, wherein the first selection circuit is coupled with the first storage circuit and the processing circuit, and configured to select, for accessing the shared resource, first and second flows from the first and second subsets of flows, respectively, and the second selection circuit is coupled with the second storage circuit and the processing circuit, and configured to select, for accessing the shared resource, one of the first and second channels;
• a flow controller that is coupled with the first selection circuit and the first storage circuit, and configured to access the first storage circuit to read first and second flow data associated with the selected first and second flows, respectively, and output the first and second flow data;
• and
• a channel controller that is coupled with the flow controller and the second selection circuit, and configured to receive the first and second flow data, and output, based on the selected channel, one of the first and second flow data;
• and
• a direct memory access controller that is coupled with the channel controller, and configured to receive one of the first and second flow data, and grant, based on the received flow data, one of the first and second flows the access to the shared resource.