3 Replies Latest reply on Jul 26, 2012 7:18 AM by chris_balcom

    LVS errors: different number of ports,nets,connectivity errors.

    arungande

      Hi,

      my lvs run is done with some errors , and i am not able to debug what exactly the problem is.

       

       

      Error:    Different numbers of ports.

        Error:    Different numbers of nets.

        Error:    Connectivity errors

       

      CELL  SUMMARY

                  Result         Layout                        Source

       

      INCORRECT      S12LP_USAN2IX020              S12LP_USAN2IX020

      INCORRECT      S12LP_USBUFFX020              S12LP_USBUFFX020

      INCORRECT      S12LP_USCLKLTX140             S12LP_USCLKLTX140

      INCORRECT      S12LP_USFD2QSX020             S12LP_USFD2QSX020

      .

      .

      .

      .there are about 13 of them like this....

       

      CELL COMPARISON RESULTS

       

       

       

                        #   #         #####################

                         # #          #                   #

                          #           #     INCORRECT     #

                         # #          #                   #

                        #   #         #####################

       

       

        Error:    Different numbers of ports (see below).

        Error:    Different numbers of nets (see below).

        Error:    Connectivity errors.

       

      LAYOUT CELL NAME:         S12LP_USAN2IX020

      SOURCE CELL NAME:         S12LP_USAN2IX020

       

      NUMBERS OF OBJECTS

      ------------------

       

                      Layout    Source         Component Type

                      ------    ------         --------------

      Ports:              6         5    *

       

      Nets:               8         7    *

       

      Instances:          3         3         MN (4 pins)

                           3         3         MP (4 pins)

                      ------    ------

      Total Inst:         6         6

       

       

             * = Number of objects in layout different from number in source.

       

       

       

      **************************************************************************************************************

                                       INCORRECT OBJECTS

      **************************************************************************************************************

       

       

      LEGEND:

      -------

       

        ne  = Naming Error (same layout name found in source

              circuit, but object was matched otherwise)

       

      INCORRECT NETS

       

      DISC#  LAYOUT NAME                                               SOURCE NAME

      **************************************************************************************************************

       

        1    Net VSS                                                   VSS

                 10

       

       

      for all the 13 incorrect's     incorrect nets are different in layout and source...... 

      how to proceed to solve this issue

       

       

      with regards

      arun kumar gande