SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
After reset, all threads on PSI-L are uninitialized and unpaired. The host will pair each source PDMA channel with (typically) a corresponding destination channel in the paired-DMA. The PDMA thread is configured to point to the paired-DMA thread and the paired-DMA thread is configured to point to the PDMA thread. Once paired, the source channels in the PDMA will send all their data to the source channel in the paired-DMA and the destination channel in the paired-DMA will never see any data other than data from the source channel in the PDMA.
The following PSI-L registers are related to source thread pairing:
Refer to their descriptions for further details.