Method and device for sharing Micro-USB interface

Abstract

The invention relates to the field of mobile equipment and discloses a method and a device for sharing a Micro-USB interface. In the method and the device for sharing the Micro-USB interface provided by the invention, a headphone interface, a USB data transmission interface, a charging interface and a UART interface for downloading and updating mobile phone software are multiplexed to a five-pin Micro-USB interface through two single-pole three-throw analog switches and certain auxiliary circuits; the functions of headphone, USB data transmission, charging and the downloading and updating of the mobile phone software can be realized on the Micro-USB interface, namely, a headphone interface, a USB data transmission interface, a charging interface and the UART interface for downloading and updating the mobile phone software are combined into a Micro-USB interface with a very small size, which realizes four complex functions. Due to the adoption of the method and the device for sharing the Micro-USB interface, valuable space for a mobile phone is saved, a smaller handheld terminal with a simple structure and low realization cost is designed conveniently.

Description

technical field [0001] The present invention relates to the field of mobile devices, in particular to a method and device for sharing a Micro-USB (micro-USB) interface with a UART download cable, an earphone and a USB. Background technique [0002] With the continuous development of mobile terminal technology and the continuous improvement of CPU speed, there are more and more applications on mobile phones, more and more complex functions, and more and more peripheral interfaces applied to mobile phones. For example, mobile phones need headphone jacks. , USB data transmission interface, charging interface, UART interface for mobile phone software download and update, but in the mobile phone of the prior art, these interfaces are set separately on the mobile phone, which needs to occupy a lot of space of the mobile phone at the same time, which gives the integration and small size of the mobile phone. It is not conducive to reducing production costs by setting each interface ...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of mobile terminal technology and the continuous improvement of CPU speed, there are more and more applications and more complex functions on mobile phones, and more and more interfaces are applied to peripherals on mobile phones. For example, mobile phones need headphone jacks , USB data transmission interface, charging interface, mobile phone software download and update UART interface, but in the mobile phone of the prior art, these interfaces are all arranged separately on the mobile phone, and need to occupy a lot of space of the mobile phone at the same time, for the integration and miniaturization of the mobile phone Restrictions brought about by modernization, and the separate setting of each interface is not conducive to reducing production costs

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