RXDMA_EN=dis, TXDMA_EN=dis
DMA Configuration.
| TXDMA_EN | TX DMA channel enable. 0 (dis): DMA is disabled 1 (en): DMA is enabled |
| RXDMA_EN | RX DMA channel enable. 0 (dis): DMA is disabled 1 (en): DMA is enabled |
| RXDMA_START | Receive DMA Start. |
| RXDMA_AUTO_TO | Receive DMA Timeout Start. |
| TXDMA_LEVEL | TX threshold for DMA transmission. |
| RXDMA_LEVEL | RX threshold for DMA transmission. |