How forcing assura QRC to keep analogLib device from schematic to extracted view ?

Hi Olivier

It might be possible to do it using "callProc.il" file but actually it would be wrong to do so becaues those kind of instances are not meant to appear in an extracted view. : )  "callProc.il" is a skillscript which can be placed in the QRC tech directory so that QRC can read and execute it when generating the extracted view. This file can also be specified in "Setup" tab of the QRC form. Here is an example of a callProc.il file:

procedure( avExtractedCellViewCallProc(cvLay)
   let( (cvSch x)
      cvSch=dbOpenCellViewByType(cvLay~>libName cvLay~>cellName "schematic")
      x=0
      foreach( schInst cvSch~>instances
         when( schInst~>cellName=="vsource"
            layInst=dbCreateInstByMasterName(cvLay "analogLib" "vsource" "symbol" schInst~>name x:0 "R0" 1)
            x=x+10
         ) ;when
      ) ;foreach
   ) ;let
) ;procedure


The above procedure will search the schematic for "vsource" instances and add a corresponding vsource to the layout. It is still incomplete as the properties and net names of the instance need to be copied over too. The coordinates of the instance would also need to be modified for each instance. I think it would still take some effort to complete it.

The correct approach to solving this problem is to replace all schematic connections to the vsource, switches with pins and remove those instances. Add the same pins in the layout. Create a symbol for the schematic, instantiate it in a test schematic and then connect vsource, etc to the original schematic through the pins. : )

Best regards
Quek

Hi Olivier

That was a really good description of the problem. Thank you. : )  Providing the tool versions definitely helps a lot in understanding and solving the problem.

Best regards
Quek

Hi Quek,
 
The last solution you propose with adding pin on layout/schematic  is the idea I have in mind at the beginning and certainly the more simple to implement. I keep it if I don’t find anything more simple for common users.

The solution you propose with the callProc.il procedure is something I prefer because it is more “transparent” for user and I can manage it with the global project control skill codes for any type of extracted. In that way, I did experiment at the beginning of my investigations  to add manually wanted device in the extracted view  with a copy/paste from schematic to extracted view (including wire connections). This is what your code does nicely (thanks for this). Devices are present in the .scs netlist (great!) but without any connection (Bad!) because connectivity properties of devices have value=nil.

I never used skill for connecting device pin to  net. I will try to find some example on source link or other cadence helps.

Maybe I can copy/past property cons & instTerms from schematic to extracted ?
 
Best regards.
 
Olivier

 Hi Quek,

Now I can copy my devices in the layout extracted view correctly.

But I can't connect correctly the terminals of the device to wanted net. I found a function named dbCreateConn in the skill doc, but I did not found enough documentation on it. I did try to copy the ~>conns section of the schematic into the device of the extracted, but it does not work.

Do you have an idea on how I can put the connectivity properties of my extracted view devices?

Thanks

Best regards

Olivier

Hi Olivier

Sorry for the late reply. I have been busy. : )

You can use dbMakeNet and dbCreateConnByName to create connectivity. The following script will add all schematic vsource instances to the extracted view and copy the properties and connectivities.

Best regards
Quek


procedure( avExtractedCellViewCallProc(cv)
   let( (cvSch myNet x vInst)
      cvSch=dbOpenCellViewByType(cv~>libName cv~>cellName "schematic")
      x=0
      foreach(inst cvSch~>instances
         case(inst~>cellName
            ("vsource"
               vInst=dbCreateInst(cv inst~>master inst~>name x:0 "R0")
           vInst~>srcType=inst~>srcType
           vInst~>vdc=inst~>vdc
               foreach( term inst~>instTerms
                  myNet=dbMakeNet(cv term~>net~>name)
                  dbCreateConnByName(myNet vInst term~>name)
               ) ;foreach
           x++
               printf("Created 1 vsource in extracted view\n")
            ) ;vsource
            ("Others" printf("Do something\n"))
         ) ;cond
      ) ;foreach
   ) ;let
) ;procedure

Hi Quek,

Thanks

This command looks great for my skill.

I‘ll try to update my skill soon. I’m also quite busy with other design issues.

I’ll keep you informed

Best regards / Cordialement

Olivier GIARD