channel x configuration register
| EN | Channel enable  |  
| TCIE | Transfer complete interrupt enable  |  
| HTIE | Half transfer interrupt enable  |  
| TEIE | Transfer error interrupt enable  |  
| DIR | Data transfer direction  |  
| CIRC | Circular mode  |  
| PINC | Peripheral increment mode  |  
| MINC | Memory increment mode  |  
| PSIZE | Peripheral size  |  
| MSIZE | Memory size  |  
| PL | Channel priority level  |  
| MEM2MEM | Memory to memory mode  |  
| DBM | double-buffer mode  |  
| CT | current target memory of DMA transfer in double-buffer mode  |  
| SECM | secure mode  |  
| SSEC | security of the DMA transfer from the source  |  
| DSEC | security of the DMA transfer to the destination  |  
| PRIV | privileged mode  |