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

Question asked by arungande on Jul 24, 2012
Latest reply on Jul 26, 2012 by chris_balcom

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

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