CCOpt CTS **ERROR: (IMPCCOPT-2004): Cannot run CCOpt as no clock trees are defined.

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pskol95

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Hello everyone,
I am facing this issues in ccopt based cts as shown in picture.
I have inserted IO pads in my design before "init_design" itself.
What am I doing wrong ?
 

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nothing suspicious there. maybe the IO connection is not done properly? I assume the IO has some in/out port and some config bits that you have to set. If, by mistake, you configured the clock IO as an output, it could create a weird behavior like what you are describing. double check that.
 

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Thanks alot Sir,
Connection were okay, but a .lib which has timing info about pads were missing, that was causing problems.
 

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