Rate Transition

Description of the Rate Transition component in Schematic Editor, which manages data transfer between circuits that operate at different execution rates.

Component Icon

Figure 1. Rate transition icon

Description

Rate transition component manages data transfer between circuits that operate at different execution rates.

If two Signal Processing circuits run on different execution rates, they cannot exchange data without the Rate Transition component. Figure 2 illustrates the use of the Rate Transition component.

Figure 2. Example of application of transition rates

Rate Transition component can also act as a CPU Transition component when CPU mapping option is set to "execution rate based".

Rate Transition component can introduce a delay of one execution rate.

Ports

  • Input (in)
    • Input signal with execution rate from one part of the circuit.
      • Supported types: uint, int and real.
      • Vector support: yes.
  • Output (out)
    • The output signal, which is the same as the input signal, but with a different execution rate. This execution rate is defined using Execution rate property.
      • Supported types: uint, int and real.
        • The output type is inherited from the input signal.
      • Vector support: yes.
        • The vector length is inherited from the input signal.

Properties

  • Initial value
    • Type in the initial value of the output signal at the beginning of the simulation.
  • Execution rate
    • Type in the desired signal processing execution rate. This value must be compatible with other signal processing components of the same circuit: the value must be a multiple of the fastest execution rate in the circuit. There can be up to four different execution rates, but they must all be multiple of the basic simulation timestep. To specify the execution rate, you can use either decimal (e.g. 0.001) or exponential values (e.g. 1e-3) in seconds. Alternatively, you can type in ‘inherit’ in which case the component will be assigned execution rate based on the execution rate of the components it is receiving input from.