Credit based low-latency arbitration with data transfer

摘要

An apparatus includes multiple data sources and arbitration circuitry. The data sources are configured to send to a common destination data items and respective arbitration requests, such that the data items are sent to the destination regardless of receiving any indication that the data items were served to the destination in response to the respective arbitration requests. The arbitration circuitry is configured to receive and buffer the data items, to perform arbitration on the buffered data items responsively to the arbitration requests, and to serve the buffered data items to the destination in accordance with the arbitration.

主权项

1. Apparatus, comprising:
multiple data sources, which are configured to send to a common destination data items together with respective arbitration requests in separate messages, such that the data items are sent to the destination regardless of receiving any response to the respective arbitration requests; and arbitration circuitry, which is configured to receive and buffer the data items, to perform arbitration on the buffered data items responsively to the arbitration requests, and to serve the buffered data items to the destination in accordance with the arbitration, wherein the multiple data sources are configured to send some of the data items with respective separate arbitration requests relating to multiple data items, wherein the arbitration circuitry is configured to send to the data sources arbitration grants upon scheduling the respective arbitration requests, and wherein the data sources are configured to send the data items irrespective of the arbitration grants.