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Specify the metal Layers in SOC encounter

amythpai

Hello,

 I am a newbie at placement and routing. I want the routing to be done using only metal 3,4 and 5 ( basically other than metal 1 and 2).

Can anyone please advise me as to where I have to mention this and the command used to get routing metal layers set? 

 

Any help in this regard is appreciated!

Thank you 

Parents
  • hello... Sorry for the delay. I wasnt in town. Actually I think I know what the problem might be. It may just be the case of wrong units or grids . I was just comparing the two i.e the SOC encounter and the layout from virtuoso and I found that the two have a difference in spacing. For example in the SOC encounter the two metal 1 layers have sufficient distance to meet the design rules but in virtuoso it is showing lesser distance and hence identifying it as an error.( minimum distance rule) I am streaming out the gds file from the SOC encounter in 2000 units. Should I specify or check any option ( like snap to grid option) while I am streaming in the gds file? Please advice me if this actually is the problem and how I can fix this Thanks a lot for all the help
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  • hello... Sorry for the delay. I wasnt in town. Actually I think I know what the problem might be. It may just be the case of wrong units or grids . I was just comparing the two i.e the SOC encounter and the layout from virtuoso and I found that the two have a difference in spacing. For example in the SOC encounter the two metal 1 layers have sufficient distance to meet the design rules but in virtuoso it is showing lesser distance and hence identifying it as an error.( minimum distance rule) I am streaming out the gds file from the SOC encounter in 2000 units. Should I specify or check any option ( like snap to grid option) while I am streaming in the gds file? Please advice me if this actually is the problem and how I can fix this Thanks a lot for all the help
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