05-12-2006 09:35 AM
05-15-2006 07:16 PM
02-23-2017 01:28 AM - edited 02-23-2017 01:30 AM
I would like to roll up this topic again.
I have the same problem. I use change detection for multiply lines. The problem is now that I get a conflict with the change detection. I have a square-wave-signal where the change detection gets fired on the rising edge and the falling edge. Now the problem is that I have a stop signal. When I get the signal the same change detection function reacts. Following I have a failure because the two signals overleap. Is there a possibility to separate the to change detections (priority, function, etc.)?
Best regards
02-23-2017 07:50 AM
When two different digital lines transition pretty much simultaneously, you'll get only one change detection event. As I recall from a previous discussion on the forums, there's some kind of internal clock used to sync the available instants for a change detection event. If two changes occur within the same minimum interval, only one change detection can and will be asserted.
I do not recall whether the digital values are latched at the instant of change or on the next clock edge after a change. If the former, your data won't show the 2nd of two near-simultaneous changes. If the latter, I expect it would.
-Kevin P