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Altera_Forum
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14 years ago

50 Mhz pulse capture in 20 Mhz domain

Hi, I am working on stratix device. I have a design requirement to capture a pulse signal from a 50 Mhz domain to 20 Mhz. Please let me know, how can i capture these pulse without any pulse i...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

If the pulse is less than 3 clocks wide in the 50MHz domain, it is impossible to sample it reliably in the 20MHz domain, unless you put it into a FIFO.