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SubjectRe: Discussion: quick_pit_calibrate is slow
Arjan van de Ven <arjanvandeven@gmail.com> wrote:
> btw one thing to think about; if you calibrate VERY quickly, you need
> to consider spread spectrum clocking.

Excellent point! But spread spectrum clock modulation rates are typically
about 30 kHz, so 1 ms will average over 30 cycles, which should be enough.

The faster the modulation rate, the more the EMI peak is flattened.
But too fast produces unaceptable cycle-to-cycle timing variations,
also known as clock jitter.


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