Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

generate waveform output on FPGA

I am trying to store a sampled waveform onto FPGA, which I could then output to feed a chip. Previously, the number of samples was relatively small (approx 150k). But I now need to store about 3 m...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Consider converting the VCD to a binary format on the PC, loading that in the SDRAM, and then use a DMA channel to push that to your pins. One option would be to DMA into a DCFIFO with the write-side operating at the SDRAM clock rate, and the read-side operating at your desired 32ns period with the rdreq always '1'. Theres lots of different ways you could do it, this is just one idea.