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cb2oa, missing vias

stuso

 Hi guys, when i translate from 5141 to OA i have some missing vias in my IC6 layout. Our PDK providers have the same process in 5141 and OA so we have only converted the design libs.

Looking at my PDK providers OA techlib it looks more complex regards via definitions, compared to 5141. In the OA techfile i see a standard vias & viaSpecs definition. I tried to manually edit the tech file and put my missing via definitions into these 2 sections but i noticed when i import this hacked OA techfile and dump it back out again that the viaSpec part has reverted to default...i.e my edits are gone, but the standardVias i added are still there. Crucially however when i open the layout with my new hached techfile attached to the lib the vias are still missing. any advice greatly appreciated, if this is a complex process i'll log an SR.

Thanks

Stu

 

 

 

 

 

Parents

  • Hi Marc, i made a little progress since my last post, this time as you just mentioned, i put the vias in the "custom via" section and when i opened up the offending cell the vias were in the layout, so good news...or so i thought. Inadvertently i've broken something else as now some unrelated metal and vias are broken when i run DRC (though visually in layout they appear to be ok, very strange).

    I logged an SR anyway & sent cadence the cdb2oa log file. 

    Thanks

    Stu

     

Reply

  • Hi Marc, i made a little progress since my last post, this time as you just mentioned, i put the vias in the "custom via" section and when i opened up the offending cell the vias were in the layout, so good news...or so i thought. Inadvertently i've broken something else as now some unrelated metal and vias are broken when i run DRC (though visually in layout they appear to be ok, very strange).

    I logged an SR anyway & sent cadence the cdb2oa log file. 

    Thanks

    Stu

     

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