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Creating a Calibre View from an Extracted Netlist

anurans

Hi All,

I have an extracted netlist with parasitics given by the IP provider for all standard cells. However this netlist (shown in below link, only for one cell) looks more like a .cdl than a pex.netlist. 

https://pastebin.com/Ar9iKYSK

How can I add a "Calibre View" to a cell using this netlist ? I know this can be imported as a Spice netlist to the OA library (I use IC 6.1.5), and I assume that is not accurate as parasitic resistors and capacitors in the extracted netlist will not be mapped (Calview.celmap in this case missing) to right models in PDK like what we do in PEX process.

Thanks and Regards

Anuradha

Parents
  • Saloni Chhabra

    Hi Anuradha,

    A quick glance at the netlist tells me that it should simulate fine with Spectre (with simulator lang=spice at the beginning). It may not look like a 'pex netlist' but it contains transistors and parasitics, so it is a postlayout netlist. Since you are using IC615, I don't think you can benefit from 'spiceText' view type in Virtuoso that can allow you to save this text file directly as a view in OA database. But you should still be able to include and simulate this netlist through Model Libraries or Simulation Files in ADE.

    Calibre view is generated by Mentor Graphics, so you'll have to ask them if there is a way to map this netlist to Calibre view.

    Regards,
    Saloni

Reply
  • Saloni Chhabra

    Hi Anuradha,

    A quick glance at the netlist tells me that it should simulate fine with Spectre (with simulator lang=spice at the beginning). It may not look like a 'pex netlist' but it contains transistors and parasitics, so it is a postlayout netlist. Since you are using IC615, I don't think you can benefit from 'spiceText' view type in Virtuoso that can allow you to save this text file directly as a view in OA database. But you should still be able to include and simulate this netlist through Model Libraries or Simulation Files in ADE.

    Calibre view is generated by Mentor Graphics, so you'll have to ask them if there is a way to map this netlist to Calibre view.

    Regards,
    Saloni

Children
  • anurans
    in reply to Saloni Chhabra

    So if just resistor/capacitor values matter for the post layout simulation accuracy, then I can import this as a spice netlist by attaching to a reference library i.e. analogLib ? am I right ?

    Thanks

  • Saloni Chhabra
    in reply to anurans

    Hi Anuradha,

    The easiest and cleanest solution will be to use IC617, so that you can import these extracted netlists as spiceText views in Virtuoso.

    If this not an option, then I'd suggest you include these netlists in ADE for simulation purposes. Please make sure that the subckt port-order matches the port-order of the instances of these std. cells. You can import the netlist into Virtuoso as well but I don't really see how creating a schematic representation will benefit you.

    Regards,

    Saloni

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