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Netlist to Schematic size problems on IC5141 (Width and Length are 0)

Michel Arendt

Hello.

I'm trying to generate a Schematic from a Netlist file on IC5141. Although I can successfully import the Netlist file and actually generate the Schematic, there is a problem with the devices' Width and Length.

For example, in my Netlist I have the following: 
MM1 Q QN vdd! vdds! psvtgp w=0.135 l=0.06 nfing=1 sense=0 ngcon=1 m=1
+ accurateFlow=0

However, once imported, the device apparently doesn't reads the W and L values and sets it to 0 in the Schematic.

My device-mapping file looks like this:
devMap := nfet nsvtgp
termMap := D d S s G g B b
propMap := W w L l
devMap := pfet psvtgp
termMap := D d S s G g B b
propMap := W w L l

Any ideads as to why this is happening? I've been looking for a solution for this for the past couple of days and, thus far, haven't been able to find one.

Thanks in advance,
Michel Arendt

  • Andrew Beckett

     I would suggest you contact customer support - being able to see the CDF of the devices in the PDK would help to understand what's going on.

    Regards,

    Andrew.

  • Michel Arendt

    Oh my... I've just solved my own problem. Apparently the device-mapping was incorrect, something I realized once I read this other non-related post:
    /forums/p/19004/1267783.aspx

    To correctly import the W and L properties from my Netlist file, I had to change both propMap from:
    propMap := W w L l
    To:
    propMap := w w l l

    The reason for this is that in the file I'm importing, the W and L letters are in lowcase, and not upper. Silly mistake, really... :(
    Maybe that's property mapping isn't even needed, but I'll have to do some tests with that...

    Thanks for the reply Andrew Beckett! The issue is now solved.
    Michel

    EDIT: Apparently you also need to have the headers of the file with the extra information like:

    ************************************************************************
    * auCdl Netlist:
    *
    * Library Name:  ASCEnD_DIFF_NCL
    * Top Cell Name: DIFF_NCL_MA3W22X2
    * View Name:     schematic
    * Netlisted on:  Jan 30 10:20:04 2014
    ************************************************************************

    *.BIPOLAR
    *.RESI = 2000
    *.RESVAL
    *.CAPVAL
    *.DIOPERI
    *.DIOAREA
    *.EQUATION
    *.SCALE METER
    *.MEGA
    .PARAM

    *.GLOBAL gnds!
    +        vdds!
    +        gnd!
    +        vdd!

    *.PIN gnds!
    *+    vdds!
    *+    gnd!
    *+    vdd!

    ************************************************************************
    * Library Name: ASCEnD_DIFF_NCL
    * Cell Name:    DIFF_NCL_MA3W22X2
    * View Name:    schematic
    ************************************************************************

    .SUBCKT DIFF_NCL_...

    The file I was first attempting to import was stripped of this header. This must be provided in order for the importing to work...

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