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Altera_Forum
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20 years ago

sound card + uclinux

I am working on a project with a sound card. We are using uclinux.

We are developing a VHDL module for the sound card, what is the best way to interface the sound card module with the CPU , is DMA the best performant architecture ?

Thanks

Laurent

6 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    --- Quote Start ---

    originally posted by grassay@Mar 27 2006, 03:27 PM

    i am working on a project with a sound card. we are using uclinux.

    we are developing a vhdl module for the sound card, what is the best way to interface the sound card module with the cpu , is dma the best performant architecture ?

    thanks

    laurent

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    You are right! DMA is best choice for this. Dma does&#39;t load CPU. It folllows CPU could have more time for other tasks
  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    I can&#39;t tell what you are actually doing, but if you want to get a soundcard working with uClinux, why not just use a PCI BUs? You can get an existing sound card driver, and modify it to work with uClinux... not sure what you are using VHDL for?

  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    My sound card is a specific sound card without standard PC interface like PCI

    Laurent
  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    Ok, what type of interface? If it&#39;s a standard asynchronous bus, you may be able to connect to it directly using Avalons Tri-state Bridge. Otherwise, you will need to write your own SOPC Component, and support as many or as little features as you like (ie: bursting, pipelining, DMA master etc..).

  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    we have control signals and directly PCMI/PCMO digital signals. These signals are synchronous with CLK and SYNC signals