toggle rate assignments

Hello Brad,

the support note is the missing link. The same was ment in the document shown by gee, I guess. I must confess, I hadn't been able to imagine a function of toggle_rate assignment, as it is revealed in the support note: Using a rate value as binary switch! But that's actually the only thinkable way to evaluate a rate in placement rules. Claim the pin isn't toggling at all, than it is ignored as a possible source of interference. (It may toggle though, but then it's your problem...). I also have heard, that there may be "backdoors" to modify pin placement rules through quartus.ini assignments.

This gives also a means to solve the recently discussed Cyclone III active parallel pin mapping issue. Just declare the flash pins as static signals, at worse get some interferences when using PFL.

Thank you for clarifying the point. I guess, one can find it using the keyword TOGGLE RATE in knowledge base, but why not in Quartus Handbook, why not in device manuals?

Regards,

Frank