Electronic devices comprising an audio amplifier and methods for controlling such electronic devices

摘要

An electronic device comprises an audio amplifier, a main microprocessor and a user interface microprocessor. The UI microprocessor has a control pin for muting the audio amplifier. A muting circuit is provided for muting the audio amplifier when a signal representative of a switch to an OFF mode of the device is generated by a mode pin of the main microprocessor. A delay part is also provided in order to switch the audio amplifier to standby during a given period of time when a signal representative of a switch to an ON mode of the device is generated by the mode pin. Methods for controlling the electronic device are also proposed.