Stats

  • Locked Locked
  • Replies 1
  • Subscribers 126
  • Views 2658
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

LVS assura error "Unbound Pin"

KipD

Hi,

I'm currently completing my first layout, and getting errors on all my pins.  When I run LVS I am getting an error on each saying "Unbound Pin".  

 I have simply placed the pins that were automatically generated in layout XL (when I generated the layout from schematic) within the appropriate metal layer.  When I purposefully place them on the wrong metal they blink, so I'm sure they are linked to the schematic.  

 I am sure there is a very simple explanation for this.. but just struggling to get to the bottom of it.

 Many thanks,

Kyle 

 

Parents

  •  Hi Kyle,

     

    are all pins unbound or only one or two? Could you write out the schematic and layout netlists  from the debug interface to check which pins are missing?  Some LVS ruledecks require labels on the pins, do you have a text label on them?

    Unbound simply means that there is a pin on one side (schematic) which could not be found on the other side (layout). Now you have to find the reason why it did not find your pins.

    Kind regards,

    Marc

Reply

  •  Hi Kyle,

     

    are all pins unbound or only one or two? Could you write out the schematic and layout netlists  from the debug interface to check which pins are missing?  Some LVS ruledecks require labels on the pins, do you have a text label on them?

    Unbound simply means that there is a pin on one side (schematic) which could not be found on the other side (layout). Now you have to find the reason why it did not find your pins.

    Kind regards,

    Marc

Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.