DMA channel configuration register (DMA_CCR)
| 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  |