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Altera_Forum's avatar
Altera_Forum
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13 years ago

frequency to voltage converter

Hey everyone, I wrote a frequency to voltage converter and implementing it on a Altera Cyclone FPGA board( with an 64Mhz internal clock) It works perfectly until it reaches 32 Mhz, at 32 Mhz it ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

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This is definetly not the isue here. It works perfectly until it gets to 32mhz then it works well too but it goes backwards.

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In other words, you have a problem that you don't understand, but you know pretty well what's not the cause.

Why are you asking at all?

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doing this can cause timing issues with Timequest (unless you setup your SDC correctly).

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Timing constraints can possibly extend the applicable frequency range, but don't turn a bad construct into a good one.