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using nport in Verilog-AMS

Hi everybody,

I want to use a nport in Verilog-A/Verilog-AMS. The implementation has been done like this:
nport #(.file("/my_folder/my_device.sparam"), .interp("spline"), .thermalnoise("no"), .usewindow("yes")) N0 (BiasN, AVSS, BiasN_cm, AVSS, BiasP, AVSS, CBiasN, AVSS);
But when I try to simulate, there's this error that the file can't be found.
ERROR (CMI-2011): Unable to open S-parameter file `"/my_folder/my_device.sparam"'.

When I copy the path and try to open the file with emacs there's no error. So could someone tell me, where's my error in implementation or usage?

Thanks a lot,
Tobias

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Tawna over 15 years ago

Hi Tobias,
With regards to setting your path, you may want to look at the following Solution:
http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:ViewSolution;solutionNumber=11066876
Note that this is for the n2port...it will be the same for the nport. In fact, you should use "nport" instead of "n2port", "n3port", etc.
There shouldn't be any issues with nport and AMS-D (that I am aware of at this point). You will definitely want to look at the nport appNote, however, to see how to set up parameters (if you don't set it up properly, you may not get the results that you expect).
You can obtain the appNote at
http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:DocumentViewer;src=wp;q=ApplicationNotes/Custom_IC_Design/NportAppNote72_8Jan.pdf

If you continue to have issues, I recommend filing a Service Request through Cadence Support. http://support.cadence.com .

best regards,
Tawna
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Tawna over 15 years ago

Hi Tobias,
With regards to setting your path, you may want to look at the following Solution:
http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:ViewSolution;solutionNumber=11066876
Note that this is for the n2port...it will be the same for the nport. In fact, you should use "nport" instead of "n2port", "n3port", etc.
There shouldn't be any issues with nport and AMS-D (that I am aware of at this point). You will definitely want to look at the nport appNote, however, to see how to set up parameters (if you don't set it up properly, you may not get the results that you expect).
You can obtain the appNote at
http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:DocumentViewer;src=wp;q=ApplicationNotes/Custom_IC_Design/NportAppNote72_8Jan.pdf

If you continue to have issues, I recommend filing a Service Request through Cadence Support. http://support.cadence.com .

best regards,
Tawna
Cancel
Vote Up 0 Vote Down

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