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Altera_Forum
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18 years ago

Timing problems, Help

Hi, I designed a cordic block that has a fmax of 200 Mhz and I have a 18 bits counter that provides the angle for cordic block, this counter has a fmax of 210 Mhz. Here I don't have problems, but whe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Hi Jose

I assume you run separate projects for your Counter and Cordic ?

With the timing "Fmax" you only get the paths between the registers, but your designs has

also paths from input pins to registers (tsu) and paths from register to output pins (tco).

When you analyze your projects you have to keep in mind that some outputs will be connected to inputs of the other project. These pahts needs to be checked also.