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Altera_Forum's avatar
Altera_Forum
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14 years ago

about DMA transmition

hi:

the DMA(sopc component) can take the bulk of data from device to memory,If the data is continuously input to device,then how to use the DMA which could realize all the data input to the device can be taken to the memory?there seems that the DMA can only taken the static data saved in device,and only once?

thanks~

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    14 years ago

    if i understand your question correct, you are wrong about the data being static. the adress is static, but the device updates the data on that location.

  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    I assume what you want to do can be handled by the SGDMA.

    What you are trying to say is streaming data input.

    SGDMA in SOPC does have both MM interface for memory mapped and ST interface as streaming transport.

    Also, you can try the "Modular SGDMA", which has more function in it.