DMA Transmit Data Level Register
DMATDL | Transmit Data Level. This bit field controls the level at which a DMA request is made by the transmit logic. It is equal to the watermark level; that is, the transmit DMA request signal is generated when the number of valid data entries in the transmit FIFO is equal to or below this bit field value, and the SPI_DMACR[TDMAE] = 0x1. |