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A burning device based on jtag

A one-to-one correspondence, switching technology, applied in measurement devices, CAD circuit design, comprehensive factory control, etc., can solve problems such as increasing circuit complexity and reducing test efficiency, and achieve the effect of improving test efficiency and simplifying circuit structure.

Active Publication Date: 2021-03-09
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some chips do not support this kind of serial firmware programming, and their JTAG function must be used in the case of a separate connection with the JTAG host, so that when programming multiple chips, it is necessary to build multiple circuits, which reduces the test efficiency and increases circuit complexity

Method used

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  • A burning device based on jtag
  • A burning device based on jtag
  • A burning device based on jtag

Examples

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Embodiment Construction

[0030] The core of the present invention is to provide a programming device based on JTAG, which does not need manual adjustment, improves test efficiency and simplifies circuit structure.

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] Please refer to figure 1 , figure 1 A schematic structural view of a JTAG-based burning device provided by the present invention, the burning de...

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Abstract

The invention discloses a programming device based on JTAG, which includes a controllable switch arranged between the TDI terminal of the JTAG host and the first chip, and between two adjacent chips, and also includes a controllable switch arranged between each chip and the JTAG host. The total controllable switch module between the TDO terminals, the JTAG host can control the corresponding input terminal of the controllable switch to connect with the corresponding output terminal according to the received programming instruction, and also control the output terminal of the total controllable switch module to connect with the corresponding output terminal. Input connection, it can be seen that this application only needs to build a circuit, and the adjustment of the JTAG link can be automatically realized by controlling the connection relationship between the input and output of the corresponding switch, so as to realize the firmware programming of different chips or chip combinations without manual work. Manual adjustment improves test efficiency and simplifies circuit structure.

Description

technical field [0001] The invention relates to the technical field of JTAG, in particular to a JTAG-based programming device. Background technique [0002] JTAG (Joint Test Action Group, Joint Test Working Group) is an international standard test protocol, mainly used for chip internal testing. Most of the advanced devices now support the JTAG protocol, such as DSP, FPGA and other devices. The standard JTAG interface is 4 lines: TMS, TCK, TDI and TDO, corresponding to mode selection, clock, data input and data output lines respectively. [0003] JTAG was originally used to test the chip. Its basic principle is to define a TAP (TestAccess Port, test access port) inside the device, and test the internal nodes through a dedicated JTAG test tool. The JTAG test allows multiple devices to be connected in series through the JTAG interface, that is, the TDO of the previous JTAG device is connected to the TDI of the next JTAG device to form a JTAG chain, so that each device can be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F8/61
CPCG06F8/63Y02P90/02G06F11/3656G06F2119/02G06F2117/06G06F30/333G06F30/30G01R31/2855G06F11/27G06F30/33G06F11/273G06F11/25G06F11/008G06F9/445G06F9/48G06F11/2733
Inventor 王鹏
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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