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Using a counter is usually fine for such a slow clock, as long as you constrain it with the create_generated_clock constraint. The tools will typically drive it through a clock buffer (altclkctrl), or you can do it manually. Alternatively you could cascade plls, but you'll need to phase align it to the fast clock when you do transfers
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I think you'll be okay with the counter. Just make sure it's a synchronous counter and not a ripple counter. As mentioned, if you're concerned about clock skew for nodes you are driving with this clock, you can put it on a Global buffer. If it has a lot of loads on it, the Fitter will likely auto-promote it to a Global anyway. If not, you can manually add it.
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Thanks a lot, both of you. Is the global buffer same as the clock buffer (altclkctrl)?
Thanks.
Honored Contributor
