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Altera_Forum
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15 years ago

Can DMA perform this application?

Hi, My application requires the following functionality with which I can get huge speedup. I want to read the data from sdram 4 bytes at a time, perform some computations and write back to sdra...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

You can use two DMAs and add your own logic between them, but you will need a kind of FIFO buffer. There is no way to know in advance how many wait cycles your DMAs will have when attempting to read or write, so you can never assume that you'll have a write one cycle after each read.