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A quetion of post layout simulation

Tinaliao

After schematic simulation and layout extraction, I got an extracted layout, and then I did the LVS. Finally I want to do the post layout simulation using my extracted layout. 

 However, I have two problems.

 1. I found that if I don't add the model library, e.g., the ami06P and ami06N, the simulation can't succeed. But  I think using ami06P and ami06N, it is using the existing models rather than the layout I draw. (I already changed the environment to be "spectre comos_sch cmos.sch extracted schematic veriloga ahdl").

2.  In addition, the simulation using the extracted layout just outputs a voltage of 0 V and the input and output current of the layout are both 0 A. I don't know the reason.

 Thank you very much.

Parents

  •  Hi Tina

    The hierarchy editor (HE) will be launched when you create a "config" view. In the library manager, go to "File->Create->New cellview" and set the tool as "Hierarchy-Editor". But I think perhaps the HE might not be needed for your case.

    Regardless of whether you use the schematic or extracted view for simulation, you will always need to include the model files. You wrote that you have already included "extracted" view in the environment. This should normally suffice as a simple way of simulating an extracted view without going through the HE.

    Just to be sure that your settings are correct, would you please go to "Setup->Environment" and provide the info in the "Switch View List" and "Stop View List" fields? Thanks.

    Is the view named as "extracted" or "av_extracted" or is it some other name?

    If you display the netlist using "Simulation->Netlist->Create", do you see many parasitic R and C in it?

    Let's first confirm if you can netlist the extracted view correctly. : )

    Best regards
    Quek

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  •  Hi Tina

    The hierarchy editor (HE) will be launched when you create a "config" view. In the library manager, go to "File->Create->New cellview" and set the tool as "Hierarchy-Editor". But I think perhaps the HE might not be needed for your case.

    Regardless of whether you use the schematic or extracted view for simulation, you will always need to include the model files. You wrote that you have already included "extracted" view in the environment. This should normally suffice as a simple way of simulating an extracted view without going through the HE.

    Just to be sure that your settings are correct, would you please go to "Setup->Environment" and provide the info in the "Switch View List" and "Stop View List" fields? Thanks.

    Is the view named as "extracted" or "av_extracted" or is it some other name?

    If you display the netlist using "Simulation->Netlist->Create", do you see many parasitic R and C in it?

    Let's first confirm if you can netlist the extracted view correctly. : )

    Best regards
    Quek

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