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A.1.6. DMA peripheral request interface signals

Table A.6 shows the DMA peripheral request interface signals.

Table A.6. DMA peripheral request interface
Signal nameTypeDescription
DRVALIDOutputDMA request handshake valid
DRTYPE[1:0]OutputDMA request type
DRLAST[a]OutputDMA last request.
DRREADYInputDMA request handshake ready
DAVALIDInputDMA acknowledge handshake valid
DATYPE[1:0]InputDMA acknowledge handshake
DAREADYOutputDMA acknowledge handshake ready

[a] This output is permanently driven LOW in the STM.

See the AMBA DMA Controller DMA-330 Technical Reference Manual for more information about these signals.