Forum Discussion

NGord's avatar
NGord
Icon for Occasional Contributor rankOccasional Contributor
2 years ago
Solved

Quartus MSGDMA core Empty bits when used from Avalon ST to Memory Mapped transfer

On an Avalon-ST to Memory mapped DMA transfer, if Empty bits are set, on the Avalon ST bus, what happens to a 32 bit Memory mapped transfer, does the DMA just write the relevant bytes to memory?
Ethernet
  • ShengN_altera's avatar
    ShengN_altera
    2 years ago

    Hi,

    If using the Packet Support Enable feature, Empty bits signal will be available. With this feature enabled, actual bytes (no additional bytes) will be transferred for the transaction. So I would say that DMA will just write the relevant bytes to memory as mentioned before.

    Thanks,

    Sheng

EBERLAZARE_I_Intel's avatar
EBERLAZARE_I_Intel
Icon for Regular Contributor rankRegular Contributor
2 years ago

Hi,


I now transition this thread to community support. If you have a new question, Please login to ‘https://supporttickets.intel.com’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support. The community users will be able to help you on your follow-up questions.



p/s: If any answer from the community or Intel Support are helpful, please feel free to give best answer or rate 4/5 survey.