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ON/OFF/Soft RESET button

The MPS2 and MPS2+ FPGA Prototyping Boards provide an ON/OFF/Soft RESET push button that enables you to perform a software reset of the system.

You initiate a software reset of the system by briefly pressing the ON/OFF/Soft RESET button during runtime. The MCC performs a software reset of the FPGA and resets the devices on the board. It does not perform a full reconfiguration of the FPGA.

The software reset sequence is as follows:

  1. You briefly press the ON/OFF/Soft RESET button.

    Caution

    If you press and hold the ON/OFF/Soft RESET button for more than two seconds, the system enters the standby state in the same way as pressing the Hardware RESET button.
  2. The MCC asserts the nRST reset signal. It might also assert nPOR but this depends on the setting of the variable ASSERTNPOR in the configuration file config.txt.
  3. The MCC releases nPOR if it is active depending on the setting of the variable ASSERTNPOR in the configuration file config.txt.
  4. The MCC releases nRST.
  5. The board enters the run state.

Note

The MCC does not read the configuration files or perform a board reconfiguration as a result of a software reset.
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