35.7.2 Suspending a Channel
A read request suspend command is issued by writing to the XDMAC_GRS register. A write request suspend command is issued by writing to the XDMAC_GWS register. A read write suspend channel is issued by writing to the XDMAC_GRWS register. These commands have an immediate effect on the scheduling of both read and write transactions. If a transaction is already in progress, it is terminated normally. The channel is not disabled. The FIFO content is preserved. The scheduling can resume normally, clearing the bit in the same registers. Pending bytes located in the FIFO are not written out to memory. The write suspend command does not affect read request operations, that is, read operations can still occur until the FIFO is full.