calibre Error: Exit Code: 4 ,.SUBCKT" statement, cap cell

Hi all,

I would like to thank this forum and you all for helping me out at
various stages of my design .
I am in between my layout/lvs

I am using a capacitor cell 'crtmom'(model name: crtmom)

when doing the LVS, i get a
*********************************************
Error: No matching ".SUBCKT" statement for "CRTMOM" at line 31 in
file /../../netlist

ERROR: Source could not be read.
*** Calibre finished with Exit Code: 4 ***
**********************************

Please help

Thanks
din

 

Hi,

you are missing a dummy spice declaration for the mom. Have a look in
your lvs directory (Calibre/lvs) and you should find a source.added
file. Include this with you netlist file and you should be OK. If you
are using the GUI select Input/Netlist Tab click on the up arro next
to the <cell>.src.net file and add the file in to the Files: box.

cheers
G

 

Hi Din,

I do agree with G, I think you are missing the empty subcircuit for
that capacitor.
The dummy subcicuit could look like:

***************************************
..SUBCKT crtmom_rf PLUS MINUS BULK
..ENDS
***************************************

If your PDK provides that 'source.added' file (or any other name) with
all the dummy subcircuit defined in it, then you have got to include
as G advised. This hand-made include is fair enough if you are working
on your own doing couple of Calibre runs a day. If you want a more
integrated solution into your CAD flow, then it is easy to make it.
Just update the cdlOutKeys variable by filling the 'incFile propeorty.
Some like:

cdlOutKeys = list(nil
'runInBackground nil
'cdsNetlistingMode "Analog"
'simLibName ""
'simCellName ""
'simViewName "schematic"
'hnlNetlistFileName "netlist"
'simRunDir "."
'shortRES 2000.000000
'resistorModel ""
'setEQUIV ""
'incFILE "THE_LOCATION_OF_MY_FILE/MY_FILE_NAME"
'globalPowerSig ""
'globalGndSig ""
'resistorCheck "value"
'capacitorCheck "value"
'pinMAP nil
'shrinkFACTOR 0.000000
'diodeCheck '"both"
'checkScale "meter"
'displayPININFO t
'checkLDD nil
)

You can do this once in your PDK || HOME || USER init file and you are
happy for the rest of your life

Cheers,
Riad.

 

Hi G, Riad,

Thanks a lot for your help.

I have one more question, when i do pex(GUI), the instances are droped
to the calibre view, but the instance property values have been
changed, like model namech/nch, w,l, cap value...
Is there way i could automate it , instead of changing it manualy each
instances, like peeping into a file and change the insatances
properties.


Thanks once again
dinac

 

Hi,

Sounds like your Calibre properties are not the same as your cadence
properties, which is a bit of a shame really :-(
If this is the case, then you have to update you Calibre mapping file.
You can edit this file from the Virtuoso Layout Editor -> Calibre ->
Setup -> Calibre View -> cellMap file.
The calibre Map File could be automated with setting up the following
in your cdsinit :
mgc_eview_globals~>cellMapFile="YourCalibreMapFile".

There is an explanation in the MGC doc on how to work with the RCX
Calibre Map File for Virtusoso.

Hope This helps,
Regards,
Riad.

 

Hi

another option for the source.added file is if you are using run
files and have "use templates" selected in the options is to add this
to the run file

*lvsTemplate_SP: %s.src.net ../Calibre/lvs/source.added

cheers G

 

Hi G,

Using the calibre templates would work very fine when are invoking the
LVs from the Calibre GUI. This is fair enough for the regular daily
runs. Using this method won't work in these couple of cases though:
1. Export the CDL netlist from the standard Cadence's menu : CIW-

2. When you run Calibre LVS in batch (by scripting) without explicitly
loading any templates. This is very common in the digital world LVS
verification where everything is run from scripts.

Setting the include file using the cdlOutKeys global variable would
make it happen for all the tools and the flows.

Regards,
Riad.