data control register
| DTEN | Data transfer enabled bit  |  
| DTDIR | Data transfer direction selection  |  
| DTMODE | Data transfer mode selection 1: Stream or SDIO multibyte data transfer.  |  
| DMAEN | DMA enable bit  |  
| DBLOCKSIZE | Data block size  |  
| RWSTART | Read wait start  |  
| RWSTOP | Read wait stop  |  
| RWMOD | Read wait mode  |  
| SDIOEN | SD I/O enable functions  |