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Altera_Forum
Honored Contributor
13 years agoring oscillator as a clock
Hi, I am having a problem using 2 ring oscillators as 2 different clocks to 2 8-bit counters. When I use them separately they are working. But when I combine the two circuits in one design the out...
Altera_Forum
Honored Contributor
13 years agoIn a design with a regular clock, Quartus timing analysis will check if all design part scan work with the respective clock frequency, e.g. the counter. The clock frequency information will be also used during synthesis and design fit.
The clock frequency of your ring oscillator isn't known and can't be considered by Quartus. A