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Manual editing of a p2lvsfile

Slawa

 Hello

 After I have faced the following error: ERROR (LBMISC-215480): at "RCXdspf": LVS connectivity file /.../  is missing .2. in the course of start qrc at me there was a necessity of editing p2lvsfile.

In a "ICT.file" is
  # Diffusion Layers
diffusion NP {thickness, resistivity} and

 # dielectric Layers
dielectric   STI {conformal FALSE, height, thickness, dielectric_constant}.

How they are necessary for setting in p2lvsfile if to them as a matter of fact corresponds nothing in a RULEfile? 

 How to be with layers which are created directly in RULEfile but are used in LVSFILE? For example there is layer PACTIVE=Layer1 and (Layer2 or Layer3) which is set in RULEfile and in LVSFILE it is used only as:

 model = diode[DP],DP
element diode[DP] DPPLUS PACTIVE NWELL

 It turns out that in LVSFILE there is no information on the given layer as well as there is no information on it in ICT.

 

Best regards

Beginner engineer from Russia 

Parents

  • Hi Slawa

    I don't quite understand the question so I am going to make a guess:

    You are wondering how the layers in the ictfile relates to the layers used in the rules file. The layers in the ictfile are termed as "process layers". The layers in the rules file are termed as "lvs layers" and are created for the purpose of lvs verification. These layers must be mapped to the actual process layer using the p2lvsfile or layer_setup file so that parasitic R and C can be calculated. E.g. by mapping lvs layers "m1" and "m2" to process layers "Metal1" and "Metal2" in the layer_setup file, qrc will know the distance between m1 and m2 through the thickness values in the ictfile and hence parasitic caps can be calculated.

    lvs layers that are used in the mapping file should also be found in the lvsfile. Otherwise there will be compilation errors. Hope that this answers your questions.

    Best regards
    Quek

Reply

  • Hi Slawa

    I don't quite understand the question so I am going to make a guess:

    You are wondering how the layers in the ictfile relates to the layers used in the rules file. The layers in the ictfile are termed as "process layers". The layers in the rules file are termed as "lvs layers" and are created for the purpose of lvs verification. These layers must be mapped to the actual process layer using the p2lvsfile or layer_setup file so that parasitic R and C can be calculated. E.g. by mapping lvs layers "m1" and "m2" to process layers "Metal1" and "Metal2" in the layer_setup file, qrc will know the distance between m1 and m2 through the thickness values in the ictfile and hence parasitic caps can be calculated.

    lvs layers that are used in the mapping file should also be found in the lvsfile. Otherwise there will be compilation errors. Hope that this answers your questions.

    Best regards
    Quek

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