Регистры H616: EMAC Transmit DMA Status Register

EMAC_TX_DMA_STA

6.1. EMAC Transmit DMA Status Register - адрес: 0x50200b0 0x50300b0 (смещение: 0x00B0)

31 |•|•|•|•|•|•|•|•|•|•|•|•|•|•|•|•| 16
15 |•|•|•|•|•|•|•|•|•|•|•|•|•|•|•|•| 00

Unused

Bits 31 : 3

TX_DMA_STA

Bits 2 : 0
R
0x0

The State of Transmit DMA FSM
000: STOP, when reset or disable TX DMA
001: RUN_FETCH_DESC, fetching TX DMA descriptor
010: RUN_WAIT_STA, waiting for the status of TX frame
011: RUN_TRANS_DATA, passing frame from host memory to TX DMA FIFO
100: Reserved
101: Reserved
111: RUN_CLOSE_DESC, closing TX descriptor
110: SUSPEND, TX descriptor unavailable or TX DMA FIFO underflow

Bit fields structure

typedef union emac_tx_dma_sta { struct { unsigned tx_dma_sta : 3; unsigned unused0 : 29; } b; unsigned long w; } EMAC_TX_DMA_STA