Q: Abutment in VXL.

[Edis]

Hi, GURUs
I'm using IC5.10.41 VXL. Is it possible to enable/disable abutment for
separate instances in layout?
E.g.: Cascode current sources has several devices in parallel. VXL
abutment works so, that "middle" contacts are removed. LVS reports
device/net mismatch. Via Propagate Nets form I change instance drain
connectivity from, e.g. a26_StrongGroup_2 to a26. Then abutment
occurs, but contacts and metals remain and I can connect them
correctly. LVS - clean! There are hundreds of devices. Using propagate
nets form is time consuming.
Questions:
1. Is it possible to enable/disable abutment for seperate instances?
2. How to change ..._StrongGroup_... nets to just normal names, e.g.
a26_StrongGroup_2 -> a26?

Thank you
Edi

 

[Andrew Beckett]

Edis wrote, on 06/16/10 11:46:

Hi, GURUs
I'm using IC5.10.41 VXL. Is it possible to enable/disable abutment for
separate instances in layout?
E.g.: Cascode current sources has several devices in parallel. VXL
abutment works so, that "middle" contacts are removed. LVS reports
device/net mismatch. Via Propagate Nets form I change instance drain
connectivity from, e.g. a26_StrongGroup_2 to a26. Then abutment
occurs, but contacts and metals remain and I can connect them
correctly. LVS - clean! There are hundreds of devices. Using propagate
nets form is time consuming.
Questions:
1. Is it possible to enable/disable abutment for seperate instances?
2. How to change ..._StrongGroup_... nets to just normal names, e.g.
a26_StrongGroup_2 -> a26?

Thank you
Edi

This might help:

http://support.cadence.com/wps/mypoc/cos?uri=deeplinkmin:ViewSolution;solutionNumber=11487134

Andrew.