SPRUIV7B May 2022 – September 2023 AM620-Q1 , AM623 , AM625 , AM625-Q1 , AM625SIP
The PDMA channel remains idle until a pulse is detected on the associated input DMA request event pin. Once the pulse is detected, the DMA sequentially issues a total of 'Y' parameter writes of 'X' parameter bytes to the data_address specified in the tchan_info parameter for the channel. Each write that the DMA performs is a single 'X' element in size (no large bursts). Once the total specified number of transactions has been completed, the channel returns to an idle state and waits until it is triggered again. The write transfers that are performed are accomplished as quickly as possible given availability of data in the Tx channelized FIFO, and given the arbitration that may occur as a result of other channels also using the same write unit.