13.6.1.4 Pattern Match Interrupt
When the MATCHEN bit is enabled, the contents of DMABUF[31:0] and DMAxPAT[31:0] are subjected to the corresponding DMAxMSK[31:0] bits’ value and compared against each other . When a match is detected, the DMA Controller proceeds to invoke its channel interrupt output while setting the MATCH bit (DMAxSTAT[1]) accordingly. For more information, refer to Real-Time Pattern Matching.