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JTAG control device and method using USB and having voltage-adjustable function

A technology of a control device and a control method, applied in the direction of electronic circuit testing, etc., can solve the problems of inability to adjust the JTAG voltage or speed, limiting the availability of the JTAG control device, poor usability of the JTAG control device, etc., to achieve the effect of improving the usability.

Pending Publication Date: 2019-06-18
INVENTEC PUDONG TECH CORPOARTION +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the JTAG control device using USB is the most convenient and fast to use, but it cannot adjust the JTAG voltage or speed, which limits the usability of the JTAG control device, so it has the problem of poor usability of the JTAG control device
[0004] To sum up, it can be known that there has been a problem of poor usability of the JTAG control device in the prior art for a long time, so it is really necessary to propose improved technical means to solve this problem

Method used

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  • JTAG control device and method using USB and having voltage-adjustable function
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  • JTAG control device and method using USB and having voltage-adjustable function

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Embodiment Construction

[0025] The implementation of the present invention will be described in detail below with reference to the drawings and examples, so as to fully understand and implement the implementation process of how to use technical means to solve technical problems and achieve technical effects in the present invention.

[0026] Before explaining the JTAG control device and method thereof that use USB and have voltage adjustable function disclosed by the present invention, the nouns defined by the present invention are described first. The output voltage generated by the analog element according to the voltage adjustment value; the second output voltage is the output voltage generated by the low dropout linear regulator 132 after the first output voltage is regulated. In actual implementation, the second output voltage is output to the programmable logic module and the analog-to-digital element at the same time, wherein the second output voltage output to the programmable logic module wil...

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Abstract

The invention discloses a JTAG control device and method using a USB and having a voltage-adjustable function. A USB signal and an adjusting request are received through a USB port, and a micro control unit converts a USB signal into a JTAG signal in order to be output to a programmable logic module, and transmits a voltage adjusting value of the corresponding adjusting request to a digital-to-analog element in order to generate a corresponding first output voltage, and then a low drop-out linear voltage regulator carries out voltage stabilization on the first output voltage to generate a second output voltage to be output to the programmable logic module, so that the programmable logic module takes a second output voltage as a voltage of the JTAG signal and then the voltage of the JTAG signal can be adjusted; and the technical effect of improving the usability of the JTAG control device is achieved.

Description

technical field [0001] The invention relates to a detection device and a method thereof, in particular to a JTAG control device and a method thereof which use USB and have a voltage adjustable function and are used in detecting components of a printed circuit board. Background technique [0002] In recent years, with the popularization and vigorous development of electronic circuits, how to effectively detect whether the electronic circuits are correct or not has become one of the problems that manufacturers are eager to solve. [0003] Generally speaking, the detection of electronic circuits, chips, etc. on the printed circuit board can be realized by Boundary Scan (BoundaryScan) technology. ) control devices (hereinafter referred to as JTAG control devices) have sprung up, for example: JTAG control devices using RJ45, JTAG control devices using PCIE, JTAG control devices using USB, and so on. Among them, the JTAG control device using USB is the most convenient and fast to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/28
Inventor 宋平
Owner INVENTEC PUDONG TECH CORPOARTION
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