sound card + uclinux

[Altera_Forum]

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

[Altera_Forum]

--- 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 <div align='right'><{post_snapback}> (index.php?act=findpost&pid=13824)  --- quote end ---    --- Quote End ---   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]

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]

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

 Laurent

[Altera_Forum]

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]

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

[Altera_Forum]

Is it an AC97 codec? If it&#39;s just PCM or AC97, you can probably get existing cores todo this for you. Check www.opencores.org