I2S DMA TX status
OUTLINK_DSCR_ADDR | I2S DMA out descriptor address. |
OUT_DSCR_STATE | I2S DMA out descriptor state. |
OUT_STATE | I2S DMA out data state. |
OUTFIFO_CNT | The remains of I2S DMA outfifo data. |
OUT_FULL | I2S DMA outfifo is full. |
OUT_EMPTY | I2S DMA outfifo is empty. |