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Altera_Forum
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18 years ago

Cyclone II is not working correct???

Hello, I have written a small process, which should read a dmx-signal (seriell signal with special timings). THe whole thing is working realy good, but sometimes it makes things, which i hav...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Larsen has a point here.

Take a look at the "check(dmx_in)". What is the source of the dmx_in signal? Is it clocked somewhere before entering the state machine? Or is it an external signal coming directly from a pin or from another clock domain?

Sounds like a timing or meta-stability problem when the behaviour is erratic.