Forum Discussion

jAlter's avatar
jAlter
Icon for New Contributor rankNew Contributor
1 year ago

Schmitt Trigger at MAX10 PLL dedicated input

MAX 10 devices feature selectable Schmitt Trigger on all inputs. The question is if the dedicated PLL input pin is affected by the Schmitt Trigger when it is enabled, or if the PLL input bypasses the...
Configuration
FvM's avatar
FvM
Icon for Super Contributor rankSuper Contributor
1 year ago
What makes you think that ST feature is switched-off if the input drives a PLL although it's shown in property editor?
jAlter's avatar
jAlter
Icon for New Contributor rankNew Contributor
1 year ago

I agree that it wouldn't make much sense that the Schmitt Trigger would be completely disabled if it drives a PLL. That wasn't exactly my question. My question was if the dedicated PLL input is connected to the Schmitt Trigger at all. Conceivable, the dedicated PLL input could always bypass the ST, even when the ST is still enabled for the normal (non PLL) I/O.