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 Global library with layout view which able to use in all processes 

Last post Fri, Sep 18 2009 1:52 AM by kbhow. 3 replies.
Started by kbhow 10 Sep 2009 05:26 PM. Topic has 3 replies and 1435 views
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  • Thu, Sep 10 2009 5:26 PM

    • kbhow
    • Top 75 Contributor
    • Joined on Thu, May 7 2009
    • Penang, Pulau Pinang
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    Global library with layout view which able to use in all processes Reply

    Hi,

    Is it possible to construct a global library with layout view which able to use in all processes? If yes, do you mind providing the proper way to do that. Thanks

    BTW, Noticed that each process has their own techFile and layer mapping as well, if we create the layout in particular process, the layout will not able to work on other process due to imcompatible data.

    Your advice/suggestion is very appreciated.

    How

    • Post Points: 5
  • Thu, Sep 17 2009 7:23 PM

    • kbhow
    • Top 75 Contributor
    • Joined on Thu, May 7 2009
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    Re: Global library with layout view which able to use in all processes Reply

    Hi all,

    I think i found the solution for this. To create a library which able to use globally, we can use incremental techFile method. We can create a new library and techFile.tf that contains layers that use in the layout and load it, then save it as tech.db. The layer names and numbers in the techFile.tf cannot be the same as other techfiles. Otherwise it will lead to errors during techfile compilaton.

    Then, in the main tech file, add global library to refTechLibs eg: refTechLibs("cs1234" "globLibrary")

    For all other processes, you can now simply add "globLib" in refTechLibs and the library "glodLib" in cds.lib to ensure that users can make use of the rdt cells. This is basically the concept of incremental techfiles.

    How
    • Post Points: 20
  • Fri, Sep 18 2009 1:41 AM

    Re: Global library with layout view which able to use in all processes Reply

     Hi How

     You are creating an independent library which does not collide with the existing techLib definitions. You may have to map the additional layers in the ITDB library to the layers in your process techLib using a layerMap file for GDS and equivalent layers for the tools. This leaves open many potential areas of error.

    If the devices are not complex, you could represent them as pcells with the layers and possibly the rules defined from the existing techLib. Each placement would be custom for the design. Use dbWriteSkill to get the initial SKILL which you would have ot parameterize with layer names, etc.

    You can also use the mapper capability to take an original library and map it to a specific technology. Copy the original library, set up the mapping table (once per technology) and it will change the layers to the ones in the techLib. You will now have a copy of the original library in the new technology. This is probably the safest methodology.

     Ted

    • Post Points: 20
  • Fri, Sep 18 2009 1:52 AM

    • kbhow
    • Top 75 Contributor
    • Joined on Thu, May 7 2009
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    Re: Global library with layout view which able to use in all processes Reply

    Hi Ted,

    Thanks for the info. I use to create an original library and map it to a specific technology, where this techFile is created with layer defination only. Can this work too?

     

    How

    • Post Points: 5
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Started by kbhow at 10 Sep 2009 05:26 PM. Topic has 3 replies.