Interface circuit, electronic equipment, and insertion identification method

The invention discloses an interface circuit, electronic equipment and an insertion identification method. The interface circuit comprises an interface, and the interface comprises a detection pin. The negative voltage unit is electrically connected with the detection pin. When the interface is not...

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Bibliographic Details
Main Author WEN YULEI
Format Patent
LanguageChinese
English
Published 12.11.2021
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The invention discloses an interface circuit, electronic equipment and an insertion identification method. The interface circuit comprises an interface, and the interface comprises a detection pin. The negative voltage unit is electrically connected with the detection pin. When the interface is not connected with the external equipment, the negative voltage unit is used for setting the pin voltage of the detection pin as a first voltage, and the first voltage is a negative voltage; when the interface is connected with the external device, the pin voltage is set to be a second voltage by the external device. The identification unit is electrically connected with the detection pin, wherein when the pin voltage is set as a first voltage, the identification unit is used for outputting a first indication signal; and when the pin voltage is set as the second voltage, the identification unit is used for outputting a second indication signal. In the interface circuit, the pin voltage of the detection pin is set to be
Bibliography:Application Number: CN202110726885