SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
In the case that an error occurs during any Tx operation, the UDMA will stop processing the TR at that point and will return an appropriate error code in the Transfer Response message as specified in the TI DMA Architecture specification. The PAUSE_ON_ERR bit in the TCHAN UDMA_TCFG_j registers controls whether or not the DMA will pause operation on that channel if an error or exception occurs. If the PAUSE_ON_ERR bit is set to 1 the channel will be paused so that the host can optionally read the channel state to determine where in the transfer the channel execution was. If the PAUSE_ON_ERR bit is 0 the DMA will flush the current Transfer Request record for channels in pass by value mode and will flush the current Transfer Request Descriptor for channels in pass by reference mode.