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 Warning during RTL Synthesis 

Last post Fri, Mar 15 2013 2:10 PM by admin. 4 replies.
Started by Arslan 28 Jan 2013 11:22 PM. Topic has 4 replies and 1404 views
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  • Mon, Jan 28 2013 11:22 PM

    • Arslan
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    • Joined on Mon, Dec 10 2012
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    Warning during RTL Synthesis Reply

    Hi, When I compile my RTL, among I get the following warning 

    Warning : Possible timing problems have been detected in this design. [TIM-11]
            : The design is 'counter'.

    Can anyone tell me what does that mean?

    • Post Points: 20
  • Tue, Jan 29 2013 7:27 AM

    • bmiller
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    Re: Warning during RTL Synthesis Reply

     This is a very common warning, and it essentially means you may have some timing constraint issues in your design.  In order to see these constraint issues, run "report timing -lint".

     FYI, for any message code in RC, you can run "man" to see more information about the message.

    rc:/> man TIM-11
    Entry       : TIM-11
    Severity    : Warning
    Verbosity   : Message is visible at any 'information_level' above '1'.
    Description : Possible timing problems have been detected in this design.
    Help        : Use 'report timing -lint' for more information.

     

     

     

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  • Tue, Jan 29 2013 10:58 PM

    • Arslan
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    Re: Warning during RTL Synthesis Reply
    Hi, thanks bmiller. that was helpful. I am loading and synthesizing RTL from encounter gui, and when I type command report timing -lint, encounter does not recognize it. how to make that command run in encounter. and also if I type man TIM-11 in encounter, it says that there is no manual entry for TIM-11. How to overcome this?
    • Post Points: 20
  • Wed, Jan 30 2013 8:17 AM

    • bmiller
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    Re: Warning during RTL Synthesis Reply

     I have never synthesized RTL from the Encounter GUI, so I don't know how that works.  I do know that RTL-Compiler is called "under-the-hood" for synthesis.  "report timing -lint" is an RTL-Compiler command, and the TIM-11 message comes from RTL-Compiler as well.

     If there is a way to pass commands or a script from Encounter to RTL-Compiler, you could use that to run "report timing -lint". Or, you could synthesize your RTL directly in RTL-Compiler.

     

     

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  • Fri, Mar 15 2013 2:10 PM

    • admin
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    Re: Warning during RTL Synthesis Reply
    Thanks
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Started by Arslan at 28 Jan 2013 11:22 PM. Topic has 4 replies.