6 Replies Latest reply on Jun 29, 2010 11:14 PM by eng.marwa_ahmed

    LVS unattached labels



      i'm in an asic project

      the layout is generated by cadence - first encounter

      there are metal layers and text layer generated , example :

      layer metal1 31

      layer text1 131

      and layer text1 is the metal layer associated to metal1 layer

      in the rule file i wrote the following :

      connect metal1 metal2 by via1

      text layer text1

      attach text1 metal1


      but in the calibre -LVS the following error is in :

      attached label "label_name" in layer 131 etc......

      same error for all text labels in the layout

      then calibre lvs doesn't extract any netlist !!!!


      i checked in the layout viewer DESIGNrev and i found that the text labels of layer 131 are situated correctly on polygons of layer 31


      what can i do to perform LVS ?


      thx for help