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Altera_Forum
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17 years ago

DMA reading multiple PIOs

Hi, My system contains a total of twenty two (22) 16-bit I/O ports (Altera PIOs) that are used to read external (10 bit) ADCs. My system is running at 85MHz and my maximum sample rate should b...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

You could use a scatter-gather DMA controller and program the descriptors to continuously read each PIO in a round-robin fashion. If you have a little HDL knowledge, you could write your own block to do this for you and ditch the PIOs altogether.

Jake