SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
The main system bus infrastructure (L3) arbitrates bus requests from all of the masters (TCs, CPU(S), and other bus masters) to the shared slave resources (peripherals and memories).
The priorities of transfer requests (read and write commands) from the EDMA transfer controllers with respect to other masters within the device IRQ_CROSSBAR are programmed using the Control Module registers. The EDMA_TPCC_QUEPRI register has no affect.
Therefore, the priority of unloading queues has a secondary affect compared to the priority of the transfers as they are executed by the EDMA_TPTC (dictated by the priority set using the Control Module registers, refer to Control Module Register Manual in Control Module chapter).