control register
| START | Start  |  
| SUSP | Suspend  |  
| ABORT | Abort  |  
| LOM | Line Offset Mode  |  
| TEIE | Transfer error interrupt enable  |  
| TCIE | Transfer complete interrupt enable  |  
| TWIE | Transfer watermark interrupt enable  |  
| CAEIE | CLUT access error interrupt enable  |  
| CTCIE | CLUT transfer complete interrupt enable  |  
| CEIE | Configuration Error Interrupt Enable  |  
| MODE | DMA2D mode  |