DMA_OUTFIFO_STATUS_CH2_REG.
| OUTFIFO_FULL | L1 Tx FIFO full signal for Tx channel 2. |
| OUTFIFO_EMPTY | L1 Tx FIFO empty signal for Tx channel 2. |
| OUTFIFO_CNT | The register stores the byte number of the data in L1 Tx FIFO for Tx channel 2. |
| OUT_REMAIN_UNDER_1B | reserved |
| OUT_REMAIN_UNDER_2B | reserved |
| OUT_REMAIN_UNDER_3B | reserved |
| OUT_REMAIN_UNDER_4B | reserved |