Cable function detection method, circuit and detector

Abstract

The invention discloses a cable function detection method, a circuit and a detector, which are used for improving the accuracy of cable detection. The method comprises the steps that a master controller determines that a first interface is connected with a first output interface; a main controller detects a first pin set of the first interface through a detection unit; if yes, the main controller requests first charging protocol information and applies for different voltage gears; the main controller samples the voltage input into a third interface to obtain a first sampling result; the main controller judges whether the connection between a second pin set of the first interface and a third pin set of the third interface is correct or not; if yes, the main controller requests a second charging protocol; the main controller samples the voltage input into the third interface to obtain a second sampling result; the main controller judges whether the connection between the CC1_OUT pin of the first interface and the CC1 pin of the third interface is correct or not; if it is correct, the master controller detects whether the second interface set is short-circuited; and if not, the master controller determines that the test is completed.

Description

technical field [0001] The present application relates to the field of circuit technology, and in particular to a cable function detection method, system, circuit and detector. Background technique [0002] With the continuous development of science and technology, electronic devices have been widely used in various fields. Cables are needed to charge electronic devices. The charging protocols used by different electronic devices may be different, and cables supporting multiple protocols are also used. more and more. [0003] Cables used for charging generally include input interfaces and output interfaces. Some multi-interface cables are also provided with functional circuit boards. When producing cables, it is necessary to detect the connectivity of the cables. However, the solutions provided by the prior art Among them, only the connectivity of the cables directly connected to the input interface and the output interface can be tested, and it is difficult to accurately t...

AI Technical Summary

Problems solved by technology

[0003]The cables used for charging generally include input interfaces and output interfaces. In some multi-interface cables, there are also functional circuit boards. When producing cables, it is necessary to In the solution provided by the prior art, only the connectivity of the cable directly connected to the input interface and the output interface can be tested, and it is difficult to accurately test some cables with functional circuit boards. Accurately testing the connectivity of multi-interface cables has become an urgent problem to be solved

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