The Rx Per-Split-Channel Buffers implement a FIFO for each BCDMA Rx split mode channel and is used for buffering payload data that has been received from remote peripherals via a PSI-L interface. Data is read from these FIFOs and written out to memory as directed by the write DMA unit modules. This unit is optional and is only present if one or more Rx split mode channels are configured in the BCDMA instance.