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IC6 Add Connectivity to Manually Routed Nets

menime54

Hi guys,

I am using IC6.1.5.  We are editing the layout with the Layout Suite XL.  Many of the nets in the layout were manually routed and do not have connectivity.  How can I add connectivity to these nets?  Is there a tool that does this or perhaps a SKILL script?  Our connectivity problems are mostly on internal, unpinned nets.

In a specific layout, we are using Join Named Nets to get LVS clean.  This means that there is an open net (vgnd) in the layout and each segment has a pin placed on it to join the nets of this node to get LVS clean.  There are flashing markers in the layout that say "Warning: Illegal weak-connect connection on net vgnd"  How do we get rid of these markers?  If we add connectivity to the vgnd net, will the marker warning be removed?  Does IC6 understand the Join Named Nets concept?  

Thank you,

 Stephanie

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  • menime54

    Thank Andrew for you quick response!

    We tried using the Connectivity->Update->Extract tool and it reports 138 opens and 9 shorts.  The block is LVS clean. 

    Then we tried importing the instances with  Layout XL Connectivity-> Generate-> Selected From Source...  instead of placing them manually.  This brought us down to 136 opens and got rid of the shorts.  I think we may need to contact customer support to get rid of the connectivity problems unless you have any other suggestions.  Or maybe we could do a web screen-sharing session next week.

     Are there any documents you could point us to for maintaining connectivity in the layout?

     Thanks,

     Stephanie

Reply
  • menime54

    Thank Andrew for you quick response!

    We tried using the Connectivity->Update->Extract tool and it reports 138 opens and 9 shorts.  The block is LVS clean. 

    Then we tried importing the instances with  Layout XL Connectivity-> Generate-> Selected From Source...  instead of placing them manually.  This brought us down to 136 opens and got rid of the shorts.  I think we may need to contact customer support to get rid of the connectivity problems unless you have any other suggestions.  Or maybe we could do a web screen-sharing session next week.

     Are there any documents you could point us to for maintaining connectivity in the layout?

     Thanks,

     Stephanie

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