Forum Discussion
Altera_Forum
Honored Contributor
9 years agoThis is not obvious, at least to me. In the "pinout planner" GUI, the graphical representation of these pins is a 'D' with a circle in it. The only other pins with this symbol are special configuration pins, which have constraints on what can be connected to them when the FPGA is powering on.
The pin legend (View | Pin Legend Window) indicates that these are "other dual purpose pins". So given the mystery function, does anyone have experience connecting these pins to a supply rail?