DEFIN flow

[sathul]

Hi Cadence users,

I want to read gdsii file which is dumped from SOC-Encounter into
virtuoso.
while dumping i am getting lot of warnings and errors like below
mentioned

\w *WARNING* Could not find VIA "VIA34_1CUT" for net ITX|NET374 in via
list.
\w *WARNING* Could not find VIA "VIA45_1STACK_E" for net ITX|NET374 in
via list.
\w *WARNING* Could not find VIA "VIA34_1STACK_N" for net ITX|NET374 in
via list.

I suspect it due to mismatch of layer map files.but while reading DEF
into virtuoso-XL where we are providing layer map file ?

Is DEF streamIn is matured flow ?

Thanks,
Sathish P

 

[Tim]

It sounds like you may have left out the reference library that
contains the VIA cells.

We have been using the DEFIN to Virtuoso for a while now. It is better
than gds in, it brings in the cells with names that match the
schematic hierarchy and the pins. You only have to switch the views
from abstract to layout. We wrote a function that adds the VXL "|" to
the front of the instance names and now the cells are VXL compliant
and can be updated for minor changes with VXL.

Tim