Detection circuit based on control chip, mobile terminal and data line

A control chip and detection circuit technology, applied in the field of communication, can solve the problems of low efficiency and inability to press the volume up and down keys at the same time, and achieve the effect of convenient operation

Inactive Publication Date: 2019-12-10
HUIZHOU TCL MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When mass-producing terminal equipment, it is not possible to ensure that the volume up and down buttons are pressed at the same time every time, which makes this method inefficient

Method used

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  • Detection circuit based on control chip, mobile terminal and data line
  • Detection circuit based on control chip, mobile terminal and data line
  • Detection circuit based on control chip, mobile terminal and data line

Examples

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only some structures related to the present application are shown in the drawings but not all structures. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0026] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of ...

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PUM

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Abstract

The invention discloses a detection circuit based on a control chip, and the detection circuit comprises: a pull-down circuit, wherein the input end of the pull-down circuit is coupled with a settingpin of a communication interface, and the output end of the pull-down circuit is coupled with the control chip; a pull-up circuit, wherein the input end of the pull-up circuit is coupled with the signal source, and the output end of the pull-up circuit is coupled with the pull-down circuit, the pull-up circuit is used for providing a first level signal for the control chip through the pull-down circuit, the pull-down circuit is used for pulling down the first level signal to provide a second level signal for the control chip when the communication interface is connected with an external data line and the setting pin is short-circuited by the data line, the control chip is used for entering a first working mode when receiving a first level signal, and the control chip is used for entering asecond working mode when receiving a second level signal. By means of the mode, the working mode of the control chip can be conveniently adjusted according to the short circuit condition of the external data line, operation is convenient, and efficiency is high.

Description

technical field [0001] The present application relates to the technical field of communication, in particular to a detection circuit based on a control chip, a mobile terminal, and a data line. Background technique [0002] In the manufacturing process of the mobile terminal, the main board of the mobile terminal needs to carry out a series of tests after the production is completed, and it is necessary to download the test program, and the downloading process needs to be manually operated, and the efficiency is low. As for the whole machine, a series of tests and system installation are also required. [0003] In one manner, the mobile terminal enters the download mode by simultaneously pressing the volume up and down keys, and then connecting the data cable. When mass-producing terminal devices, it is not possible to ensure that the volume up and down keys are pressed at the same time every time, which makes this method inefficient. Contents of the invention [0004] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W8/22H04W8/24H04M1/725H04M1/24H04M1/72448
CPCH04W8/22H04W8/24H04M1/24H04M1/72409H04M1/72448
Inventor 吴泽威赵俊香林俊兰刘冠琛
Owner HUIZHOU TCL MOBILE COMM CO LTD
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