SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
EDMA_TPCC_LNK_n[31:16] BCNTRLD is a 16-bit unsigned value used to reload the EDMA_TPCC_ABCNT_n[15:0] BCNT field once the last array in the 2nd dimension is transferred. This field is only used for A-synchronized transfers. In this case, the EDMA_TPCC decrements the BCNT value by 1 on each TR submission. When BCNT reaches 0, the EDMA_TPCC decrements CCNT and uses the BCNTRLD value to reinitialize the BCNT value.
For AB-synchronized transfers, the EDMA_TPCC submits the BCNT in the TR and the EDMA_TPTC decrements BCNT appropriately. For AB-synchronized transfers, BCNTRLD is not used.