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Encounter Power Routing Flow

deeps

 Hi, 

 I am trying to create a Encounter based power routing flow, i need some suggestions as to the order of the commands that we can use, for example do we create the stripe first or the follow rails.

  I am creating the power routes in the below order

1> Create core Ring

2> Connect the core ring to the power pads 

3> Create ring for selected macros

4> Create Stripes (both Vertical & horizontl) for the core area

5> Create follow rails

       With this order when the follow are created some of the follow will be left open with-out connecting to stripes or the core ring (due to mincut via violations)

        But if i create the follow rails first & then the stripes it creates a lot of Mincut via violations.

   Would be help-full for me if some one suggest the way the power routes to be created with out creating any DRC violations.

 

thanks

deepak.

Parents
  • surajece01
    • If you check verify geometry at each stage of adding stripes, That would reduce the overall DRC we will get at the end.
    • DRC we will have end will be min spacing and wire overlaps.
    • Connectivity between macro pins
    •               we should check the macro pins orientation (horizontal or vertical) give proper via options.         
    •               ex: macro pins in MET4 vertical ( in this case via from MET5 to MET4)
    •                there is possibilty that macro pins in MET4 horizontal ( in this case via from MET6 to MET4) use editpowervia command.
    •               Verify connectivity will show the macros for which vias are not formed.
    • In the Narrow channels we do manually add stripes (after doing verify connectivity check and stripes which are like floating.
    • Generally stripes  wont get connected to ring near io wire. you need to jog it and connect this manually. 
    • For all connectivity check use verify connectivity check with proper options. 

     

Reply
  • surajece01
    • If you check verify geometry at each stage of adding stripes, That would reduce the overall DRC we will get at the end.
    • DRC we will have end will be min spacing and wire overlaps.
    • Connectivity between macro pins
    •               we should check the macro pins orientation (horizontal or vertical) give proper via options.         
    •               ex: macro pins in MET4 vertical ( in this case via from MET5 to MET4)
    •                there is possibilty that macro pins in MET4 horizontal ( in this case via from MET6 to MET4) use editpowervia command.
    •               Verify connectivity will show the macros for which vias are not formed.
    • In the Narrow channels we do manually add stripes (after doing verify connectivity check and stripes which are like floating.
    • Generally stripes  wont get connected to ring near io wire. you need to jog it and connect this manually. 
    • For all connectivity check use verify connectivity check with proper options. 

     

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