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Altera_Forum's avatar
Altera_Forum
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15 years ago

24bit counter by 400 MHz

Hi all, i am working with Cyclone III Starter Kit, the max frequency is 400 MHz. I would like to use this high frequency to achieve a 2.5ns resolution. with the megafunction i can easy make the ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

If you want 24 bit counter running at 400MHz that is one issue, but if you just want 2.5ns time resolution then a single register running at 400 MHz may be do the job without counting. You send a changing input and check at the output of the register or Xor the input and output of that register resulting in a 2.5ns pulse.