This prevents gliches on changing to an output mode. If not the ALT mux can be selecting a IP block that is drving the line to say 0. Then the output is connected to that source, then swithced to the correct source.
This prevents gliches on changing to an output mode. If not the ALT mux can be selecting a IP block that is drving the line to say 0. Then the output is connected to that source, then swithced to the correct source.