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Altera_Forum's avatar
Altera_Forum
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9 years ago

Continuous signal tap capture?

Hi, I am wondering if there is a way to continuously get data from probes in signal tap. I have explored the mex matlab signal tap functionality in a loop but I lose samples. I have brie...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

I think Signaltap is going to struggle. JTAG has a lot of overhead associated with it and you're trying to recover @ 1Mbsp of raw data.

If you're not already you could try running your JTAG chain faster. See: "how do i change the clock frequency of the usb-blaster ii download cable? (https://www.altera.com/support/support-resources/knowledge-base/solutions/rd06242013_922.html)".

Beyond that, I think you're going to have to come up with a more ingenious solution. Buffering - yes. But for how long do you want to "continuously get data"? JTAG will remain a bottleneck (assuming that's the issue) in a continuous scenario, regardless of any buffering.

Cheers,

Alex