1 Reply Latest reply on Apr 15, 2014 4:58 AM by yu.yanfeng

    Trace length

    sandeep.kumar

      Hi everybody,

       

      How to know upto what length i have to route a trace in case of high speed signals when no guidelines is provided by the IC vendor.

        • 1. Re: Trace length
          yu.yanfeng

          Industrial standard interface have it's  specification for common electrical and mechanical,  so you can look up the CEM specification and use it as a baseline if you can't get the model or design guide from  IC vendor.

           

          For propertied interface,  you have to  guess it if you have no IC model nor design guide /datasheet( I can't image there is a case that  you are using a propertied  interface and the vendor refuse to provide design guide).

           

          If you just wanna investigate how the signal get attenuate  along trace, Hyperlyny Linesim is a good tool  to help you to visulize it. You can do length sweep simulation

           

          Yanfeng