Honor Device Co., Ltd.

Xinmiao Yan

Ting Huang

Chao Han

This application relates to the technical field of circuits. An output terminal of the pull-up circuit is configured to be connected to a Type-C plug of the earphone through a MIC pin of the Type-C interface. The controller is configured to control the electronic device to be disconnected from an audio path of the earphone, control an access resistance value of the pull-up circuit to be a first resistance value, and identify normal/reverse insertion of the earphone based on a voltage of the MIC pin of the Type-C interface when the earphone is inserted into the Type-C interface of the electronic device through the Type-C plug. The controller is further configured to control the access resistance value of the pull-up circuit to be a second resistance value after the identification is completed, and the first resistance value is greater than the second resistance value.

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Shenzhen, China

Xinmiao Yan