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Community Forums Custom IC Design Unable to change reference of library from cdsDefTechLib...

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Unable to change reference of library from cdsDefTechLib to actual pdk

sidm
sidm 4 months ago

Hello, 

When opening a layout view I am seeing the below message post which I don't see any PDK layers in my layout window.  I even tried re-referencing library to point to the actual pdk lib but somehow it's always pointing to the cdsDefTechLib.

Any suggestions on how can I get back original layout layers ?

thanks

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  • Andrew Beckett
    Andrew Beckett 4 months ago

    You say you "re-referenced" the library to the actual PDK lib - how did you do that? it sounds as if your design library is "attached" to the default technology library - did you use the "Attach" button on the Tools->Technology File Manager form to do this "re-referencing" or did you set up a reference library somehow?

    If you go over your library in the library manager and do Right Mouse->Properties (with the library only selected), what does it show for the techLibName property?

    Andrew

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  • Andrew Beckett
    Andrew Beckett 4 months ago

    You say you "re-referenced" the library to the actual PDK lib - how did you do that? it sounds as if your design library is "attached" to the default technology library - did you use the "Attach" button on the Tools->Technology File Manager form to do this "re-referencing" or did you set up a reference library somehow?

    If you go over your library in the library manager and do Right Mouse->Properties (with the library only selected), what does it show for the techLibName property?

    Andrew

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  • sidm
    sidm 4 months ago in reply to Andrew Beckett

    Thanks for the reply Andrew. 

    When checking the Right Mouse->Properties it shows cdsDefTechLib. So to change this I did a right click on the library name -> Change library reference and there I tried to set the "From Library as cdsDefTechLib" and "To Library as actual pdk library".

    The above is not working for me. I had made a backup of the original design which is attached to the pdk technology but this copied backup is somehow pointing to cdsDefTechLib. I am trying to retrieve something from this backup library when I came across this issue. 

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  • Andrew Beckett
    Andrew Beckett 4 months ago in reply to sidm

    Changing library references won't help here; that looks for references to a particular library in the design database in the library - and it's pretty unlikely that you have any references to cdsDefTechLib.

    You need to attach the design library to the technology library using the "Attach..." button on the Tools->Technology File Manager in the CIW.

    Andrew

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