RESOLVING CONTENTION BETWEEN DATA BURSTS

摘要

In an embedded system, there are a plurality of data requesting devices, a plurality of data sources and a bus fabric interconnecting the data requesting devices and the data sources, wherein the bus fabric comprises a plurality of bus components. Some or all of the data sources and arbitration devices associated with the bus components resolve contentions between data bursts by selecting a first one of the contending data bursts; determining a length of a critical section of the first selected data burst; and processing the critical section of the selected data burst. Then, a second one of the contending data bursts is selected, a length of a critical section of the second selected data burst is determined, and the critical section of the second selected data burst is processed before a non-critical section of the selected data burst.

主权项

1. An arbitration device, for resolving contention between data bursts in a data transfer system, the arbitration device being configured to resolve contention between the data bursts by:
selecting a first one of the contending data bursts; determining a length of a critical section of the first selected data burst; processing the critical section of the selected data burst; selecting a second one of the contending data bursts; determining a length of a critical section of the second selected data burst; and processing the critical section of the second selected data burst before processing a non-critical section of the selected data burst, wherein the step of determining the length of the critical section of each selected data burst comprises: reading a tag included in the selected data burst, the tag indicating the length of the critical section of the selected data burst.