RULE LEF_DEFAULT definition for Abstract Generator/Encounter/NanoRoute

Hello,

 Please look at the LEFDefaultRouteSpec constraint group in you technology file (that you could dump with the technology toolbox).

All custom vias which are part of the validVia list of the LEFDefaultRouteSpec constraint group will be considered as DEFAULT.

Thanks,

Alex

 Halo alex,

This is an old post which has been solved already, I dont know how to remove it,

thank you

Hi eklikeroomys,

 I you have resolved this issue, can you please tell me how can I resolve it as I am stuck in same error i.e. There is no default via from LAYER MET1  to LAYER MET2.

Thanks,

Qazi

Alex Soyer said:

All custom vias which are part of the validVia list of the LEFDefaultRouteSpec constraint group will be considered as DEFAULT.

I'm not finding this to be the case. My techfile has 

   ( "LEFDefaultRouteSpec" nil "LEFDefaultRouteSpec"
    interconnect(
        ( validLayers
            ( M1 M2 M3 M4 M5 M6 M7 )
        )
        ( validVias
            ( M2_M1 M3_M2 M4_M3 M5_M4 M6_M5 M7_M6 )
        )
    ) ;interconnect

and I'm still getting the error during globalDetailRoute

 #ERROR (NRDB-158) There is no default via from LAYER M1 to LAYER M2 in RULE LEF_DEFAULT.

btw, I'm running Encounter 11.10

I'm having a similar issue when using nanoRoute.

When I dump my technology file, the via definitions appear to be there.  Additionally, when I place the design I can see that the tool is able to drop in the correct vias.

I've tried creating a non default route spec, but even if I assign all nets to that NDR the tool still fails on error NRDB-158 during routing.

Ideas on how to fix this?

The Forum Guidelines ask you not to post questions in old threads - and in this case it may be better answered elsewhere. So I'd suggest you ask the question in the Digital Implementation forum, which would be more suited for NanoRoute and Innovus questions.

Regards,

Andrew.

Thank you Andrew, I will repost as a new question.