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Power Calculation and Average Power for large set of input combinations (in thousands)

mkza1002

Hello,

I want to know if there is  a method in Cadence to calculate power for thousands set of input combinations separately for a logic circuit design.

Also, is there a way we can do the same by using Verilog?

PS: basically in my case, the total input combinations is approximately 60,000.

Thanks.

Parents

  • Hi Kashif,

    I think you are misunderstanding how power analysis works in general. You could get power for a specific state but dynamic power is a function of the transitions as well. So number of permutations per number of inputs is not relevant; what is relevant is the activity on those inputs. For example, if you have 2 inputs, a transition from 00 to 01 will produce different power than 00 to 11 or even 01 to 00 which is just the opposite. You could create separate activity files for each permutation or assert them through tool commands but this will not lead to accurate power numbers most likely since I presume you system is indeed toggling in some particular sequence

    gh-

Reply

  • Hi Kashif,

    I think you are misunderstanding how power analysis works in general. You could get power for a specific state but dynamic power is a function of the transitions as well. So number of permutations per number of inputs is not relevant; what is relevant is the activity on those inputs. For example, if you have 2 inputs, a transition from 00 to 01 will produce different power than 00 to 11 or even 01 to 00 which is just the opposite. You could create separate activity files for each permutation or assert them through tool commands but this will not lead to accurate power numbers most likely since I presume you system is indeed toggling in some particular sequence

    gh-

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