SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
The mapping between the QDMA channels and the PaRAM sets is programmable. The QDMA channel mapping register EDMA_TPCC_QCHMAPN_j in the EDMA_TPCC allows to map the QDMA channels to any of the PaRAM sets in the PaRAM memory map. Figure 18-25 illustrates the use of EDMA_TPCC_QCHMAPN_j.
EDMA_TPCC_QCHMAPN_j[4:2] TRWORD bit-field allows to program the trigger word in the PaRAM set for the QDMA channel. A trigger word is one of the eight words in the PaRAM set. For a QDMA transfer to occur, a valid TR synchronization event for EDMA_TPCC is a write to the trigger word in the PaRAM set pointed to by EDMA_TPCC_QCHMAPN_j for a particular QDMA channel. By default, QDMA channels are mapped to PaRAM set 0.
It must appropriately re-map PaRAM set 0 before use.