4 Replies Latest reply on Dec 28, 2012 8:35 AM by dkrzmarcik

    Using Topology Type in CES

    dkrzmarcik

      I am setting my topology type to TShape in the CES spreadsheet.  When I route the board it lets me route the net without using a T route.  I also do a DRC and do not see any indication of an error routing this net serially.  I would think it would either force me to route the net as a T or it would list it as a DRC error.  Any ideas?  Thanks.

        • 1. Re: Using Topology Type in CES
          yu.yanfeng

          Yes. If you just assign Tshape topology to net, Expeditionpcb allow you route it just like MST topology and no DRC, so We just use custom topology->T topology net order.

          Yanfeng

          • 2. Re: Using Topology Type in CES
            dkrzmarcik

            Yanfeng

                    I would like to route a T between 3 pins exactly what you

            described but it doesn't appear that I get a DRC error or am restricted

            from routing it serially?  I was wondering how I can restrict the routing

            to only a T termination and/or get a DRC if it is routed any other way.

            Thanks.

             

             

             

             

             

            From:   "yu.yanfeng" <community_admin@mentor.com>

            To:     dave krzmarcik <dkrzmarcik@bannerengineering.com>

            Date:   12/28/2012 06:43 AM

            Subject:        Re: - Using Topology Type in CES

             

             

             

             

            Mentor Graphics Communities

            Using Topology Type in CES

            reply from yu.yanfeng in Layout and Routing - View the full discussion

            Yes. If you just assign Tshape topology to net, Expeditionpcb allow you

            route it just like MST topology and no DRC, so We just use custom

            topology->T topology net order.

            Yanfeng

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            • 3. Re: Using Topology Type in CES
              yu.yanfeng

              Set  the net to custom toplogy,and set the order type be T topology, you will see a T point on net line now.

              yanfeng

              • 4. Re: Using Topology Type in CES
                dkrzmarcik

                Yanfeng

                        Sorry about the confusion but I still am not getting the correct

                results.

                Here is a snapshot of CES.  I am setting the T on A[0] with a Netline

                Order of IC3-W13, IC1-M8, IC6-M8

                 

                 

                Here is the resulted routing with this constraint

                 

                 

                I have a similar constraint on A[1], that is the selected trace in the

                routing.bmp file and A[0] is the other trace shown in routing.bmp.  As can

                be seen both are T routing but it did not match the length on each side of

                the T for the loads.  Thanks.

                 

                 

                 

                 

                 

                From:   "yu.yanfeng" <community_admin@mentor.com>

                To:     dave krzmarcik <dkrzmarcik@bannerengineering.com>

                Date:   12/28/2012 09:56 AM

                Subject:        Re: - Using Topology Type in CES

                 

                 

                 

                 

                Mentor Graphics Communities

                Using Topology Type in CES

                reply from yu.yanfeng in Layout and Routing - View the full discussion

                Set  the net to custom toplogy,and set the order type be T topology, you

                will see a T point on net line now.

                yanfeng

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                Start a new discussion in Layout and Routing at Mentor Graphics

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