Регистры H616: EMAC Receive DMA Status Register

EMAC_RX_DMA_STA

6.1. EMAC Receive DMA Status Register - адрес: 0x50200c0 0x50300c0 (смещение: 0x00C0)

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

Unused

Bits 31 : 3

RX_DMA_STA

Bits 2 : 0
R
0x0

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

Команда U-Boot для чтения регистра

md 50200c0 1
md 50300c0 1

Bit fields structure

typedef union emac_rx_dma_sta { struct { unsigned rx_dma_sta : 3; unsigned unused0 : 29; } b; unsigned long w; } EMAC_RX_DMA_STA