Default toggle rates for unspecified signals

Allows you to specify toggle rates for the PowerPlay® Power Analyzer to use during power analysis. The following choices are available:

  • Default toggle rate used for input I/O signals—Allows you to specify a default toggle rate for the PowerPlay® Power Analyzer to assume for all primary I/O signals, which include input I/O, bidirectional (input path), and virtual pins. You can specify the toggle rate as a percentage of clock cycles during which a toggle occurs, or as a number of transitions per second. A transition is defined as a change of state from 0 to 1 or from 1 to 0.
    Scripting Information

    Keyword:power_default_input_io_toggle_rate

    Settings:<toggle rate>

    default = "12.5%"
  • Default toggle rate used for remaining signals—Allows you to specify a default toggle rate for the PowerPlay® Power Analyzer to assume for all non-input signals. For supported device families, you can use vector-less estimation to calculate a toggle rate.
    • Use default value—Directs the PowerPlay® Power Analyzer to assume a default toggle rate that you specify. You can specify the toggle rate as a percentage, or as a number of transitions per second.
    Scripting Information

    Keyword:power_default_toggle_rate

    Settings:<toggle rate>

    default = "12.5%"
Note: The PowerPlay® Power Analyzer uses a default static probability of 0.5 for unspecified signals.