TXDMA_EN=dis, RXDMA_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 |
| TXDMA_LVL | TX threshold for DMA transmission. |
| RXDMA_LVL | RX threshold for DMA transmission. |