Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Multiplexer Output Glitching

Hi all, I'm having trouble multiplexing a number of signals without the output glitching. The following 4 to 1 multiplexer with all the inputs connected to 1 shows the issue: module mult...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Avoiding glitches in combinatorial circuits brings you into the field of "Asynchronous Sequential Switching Circuits" and "Asynchronous State Machines". Rewriting the equation will not really help as everything depends on the relative path delays as produced by the fitter and these will vary while compiling the design after each design change/addition.