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Altera_Forum's avatar
Altera_Forum
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13 years ago

Pin seen as a clock in TimeQuest but is not a Clock

I have been getting an error Node: GND was determined to be a clock but was found without an associated clock assignment. The pin has nothing to do with a clock, and I do not see how TimeQuest...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

By Project SDC do you refer to my TimQuest SDC or something else?

My GND is not doing anything except feeding into combinational logic blocks an externally forced '0'. Basically I designed a delay loop using XORs. A counter feeds wave into the logic blocks, that way it can be delayed by a certain amount. (Please do not question why I did this, and no I don't need suggestions to make this different).

Side note, if I take away GND as a pin, and make it a signal that is forced to '0', than TQ says that another pin (completely seperate from what GND interacts with) is said to be a clock but isn't.

Here are snap shots of source and destinations of GND:

imgur.com/eIaL9

imgur.com/bPWO4