Honored ContributorI 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
Honored Contributorwe 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't load CPU. It folllows CPU could have more time for other tasks
Honored ContributorI can'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?
Honored ContributorMy sound card is a specific sound card without standard PC interface like PCI
LaurentHonored ContributorOk, what type of interface? If it'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..).
Honored Contributorwe have control signals and directly PCMI/PCMO digital signals. These signals are synchronous with CLK and SYNC signals
Honored ContributorIs it an AC97 codec? If it's just PCM or AC97, you can probably get existing cores todo this for you. Check www.opencores.org
