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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

    we follow similar kind of flow except that we put follow pins first and then stripes.

    1) core ring

    2) pads to core ring connection

    3)  block ring

    4) Delete all obstructs, put follow pins

    5) Stripes

    we havent faced any problem with this flow.You are getting Mincut via violations, that may not be because of paticular flow. It could be because of improper spacing between stripes. Please refer tech lef file for proper spacing if that is the problem. 

     

     

     

     

Reply
  • surajece01

    we follow similar kind of flow except that we put follow pins first and then stripes.

    1) core ring

    2) pads to core ring connection

    3)  block ring

    4) Delete all obstructs, put follow pins

    5) Stripes

    we havent faced any problem with this flow.You are getting Mincut via violations, that may not be because of paticular flow. It could be because of improper spacing between stripes. Please refer tech lef file for proper spacing if that is the problem. 

     

     

     

     

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