DIVA LVS rewiring error

[michael_skoufis]

Hello Cadence diva pros,

I am trying to run diva LVS on an extracted layout. The problem is a
rewiring error I'm getting regarding a swap in an nMOS transistor
terminals. The error says that I should reverse the drain and the source
so that the connections are right.

This doesn't make sense to me since the terminals of a transistor are not
initially assigned to specific voltages. Any helpful idea is
appreciated.

Mike

 

[Bernd Fischer]

Out of my head, there must be a permute pin property for your
transistor, possibly placed as CDF param in the simulation information
for auLvs or as instance property, with which you can allow
DIVA to swap pins.
Something like permutePin( p( "S" "D") ), if I remember it right.

To make sure check the DIVA reference manual or other related docs for
permute pin.

Bernd

michael_skoufis wrote:

Hello Cadence diva pros,

I am trying to run diva LVS on an extracted layout. The problem is a
rewiring error I'm getting regarding a swap in an nMOS transistor
terminals. The error says that I should reverse the drain and the source
so that the connections are right.

This doesn't make sense to me since the terminals of a transistor are not
initially assigned to specific voltages. Any helpful idea is
appreciated.

Mike