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Incorrect multiplier in Spice In

wcheong

Hi,

I used Spice In to import SPICE netlist to generate schematic in IC181 (version ICADVM18.1-64b.500.4). The technology is in tsmcN16 and library is defined in cds.lib. Schematic was generated without any error. However, it failed LVS due to the incorrect number of multiplier.

Original SPICE netlist: M_0 nn2 net122 VSS VSS nch_18_mac l=150.0n nfin=15 m=18

spiceIn.log:

    Inst: M_0
        Created net 'nn2'.
        Created net 'net122'.
        Found net 'VSS'.
        Found net 'VSS'.
        Created net 'nch_18_mac'.

        Master Cell: 'nch_18_mac'.
        Master Cellview: 'tsmcN16.nch_18_mac:symbol' found.
        Created instance 'M_0'.
        Created connection between net 'nn2' and term 'D'.
        Created connection between net 'net122' and term 'G'.
        Created connection between net 'VSS' and term 'S'.
        Created connection between net 'VSS' and term 'B'.
        Created propName='model'; propType='string'; propVal='nch_18_mac'.
        Created propName='l'; propType='string'; propVal='1.5e-07'.
        Created propName='nfin'; propType='string'; propVal='15'.
        Created propName='m'; propType='string'; propVal='18'.

LVS netlist: MM_0 nn2 net122 VSS VSS nch_18_mac l=1.5e-07 nfin=15 m=1

Is there any solution for this issue? Please let me know if there is any existing solution or discussion about this issue. Thanks.

Parents
  • Andrew Beckett

    The most likely situation is that the the parameter is not called "m" but something else. It may be being mapped (via the propMapping) to netlist as m, but it might be called something else (e.g. multi) on the component itself. You'll need to look at the CDF definition to see what's going on. 

    I can't discuss that technology in an open forum since that would break the NDA with the foundry - so you might be better off talking to customer support if you can't figure it out yourself.

    Andrew.

  • wcheong
    in reply to Andrew Beckett

    I changed "m" to "multi" as defined in CDF and it works.

    Thanks, Andrew.

Reply
  • wcheong
    in reply to Andrew Beckett

    I changed "m" to "multi" as defined in CDF and it works.

    Thanks, Andrew.

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