VPWLF source in Cadence Virtuoso

Hi Jagdish,

 Follow the next steps:

1. Do steps 1-8 mentioned in the below article:

How can I have a vpwlf source with the filename specified with a design variable?

2. Replace the analogLib/vpwlf with the copied one in your design.

3. Add the design variable name e.g pwlfile which represents the file path and name of the PWL file in the copied vpwlf in the Edit Object Properties form as shown below:

4. Add a new variable e.g pathtofile in ADE which represents the file path e.g pathtofile="/home/dimitra" and then use strcat for pwlfile variable to concatenate the pathtofile and the different pwl file name for each corner:

With the example above (3-4 step) you can control the file path with a variable, that's just an example. You can define your variables differently depending on your requirements.

Regards,

Dimitra

Hi Dimitra,

The link you have send is asking for extra credential, such as HOST_IS & REFERENCE_KEY. How can I access that information?

I tried the way you have explained in point 2 to 4. But I dont see vpwlf variable in the list of variables !!!!

Steps which I followed: 1. I copied vpwlf source from analogLib in my local Library.

                                      2. Then I added design variable in "PWL file name" option in the properties of the copied vpwlf source.

                                      3. Check and save the schematic & in ADE XL test_editor window I try to copy variables from Cellview.

                                      4. I dont see any variable in the variable pan window.

Have I missed anything???

Regards,

Jagdish

Hi Jagdish,

 This is because you skipped step 1

You need to have an account to be able to access the link on Cadence support site. It's ok I can write the steps mentioned in the link here:

For step1:

1. Take a copy of vpwlf from analogLib into your own library
2. CIW Tools->CDF->Edit
3. Set the CDF type to "Base", and fill in the lib name and cell name of your vpwlf.
4. Go to the simulation information tab. Choose spectre as the simulator.
5. Add "file" to the instParameters and remove "file" from the stringParameters.
6. Go to the "Component Parameters" tab, and click on the row for the parameter fileName.
7. Set parseAsNumber to "yes" and units to "don't use".
8. OK the Edit CDF form.

Step 7 will allow you to do 'Copy From CellView' and see the variable in ADE. 

Regards,
Dimitra

Hi Dimitra,

Such a naive mistake to overlook 1st step in itself

Nevertheless, I followed the procedure and now I can see the variable in ADE state.

Thanks a lot.

Regards,

Jagdish