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Using dyn_floatdcpath in AMS Simulations

baltacican87

Hello,

I would like to find the potential leakage paths due to floating nets in a transient AMS simulation by using Leakage Analysis-based Method option of dyn_floatdcpath check. It works well and it reports the leakage paths if I select spectre as the simulator. However, it doesn't report anything if I select ams as the simulator.

My ultimate goal is to detect the leakage paths in a netlist where some of the views are selected as functional (verilog rtl). Is it possible to have this option? If it is possible, what is the right configuration?

In case it is needed, I have IC6.1.8-64b.

Many thanks in advance.

Best regards,

Can

  • Andrew Beckett

    Can,

    Yes, this is possible. We even have a Rapid Adoption Kit on this topic: AMS Designer Checks & Assertions

    Of course, it can't analyse leakage paths through RTL blocks - only through the electrical parts of the design, but the presence of the views is not an obstacle.

    Andrew

  • baltacican87
    in reply to Andrew Beckett

    Hi Andrew,

    Many thanks for your answer. I was able to run an ams simulation and get the list of the potential leakage paths correctly. However, I can get this information only when I check the report (right click on results - View Dynamic/Static Violation Report). In "Checks/Asserts", nothing is visible and it is written "disabled" although I mark "Checks/Asserts" checkbox. Moreover, I get "eval err" for the waveforms I select to plot. Interestingly, I can still plot them if I double click on "eval err". In fact, I don't get "eval err" if I unmark "Checks/Asserts" checkbox. However, this is contrary to our goal. Do you have any idea why these issues are happening and how to prevent them?

    Regarding your point on the RTL blocks, I agree. My goal is to detect the potential leakage paths on the analog section of the netlist, not the RTL blocks, which is not possible.

    Many thanks and best regards,

    Can

  • Andrew Beckett
    in reply to baltacican87
    baltacican87 said:
    Do you have any idea why these issues are happening and how to prevent them?

    Not without spending some time to try to reproduce it and research it. I am swamped this week, so please contact customer support.

    Andrew

  • baltacican87
    in reply to Andrew Beckett

    I understand. We will proceed like that. Thanks anyway for your support.

    Can

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