Introduction to JTAG Basics

Introduction to JTAG Basics

Welcome FPGA engineers to join the official WeChat technical group. Clickthe blue textto follow us 1. What is JTAG: Joint Test Action Group. JTAG is an IEEE standard designed to solve board-level issues, developed in the 1980s. Today, JTAG is used for programming, debugging, and probing ports. Of course, the original use was boundary testing. … Read more

Who Moved My JTAG Port?

Who Moved My JTAG Port?

In the process of FPGA development and learning, a key step is downloading to the board. Achieving hardware “hard presence” is very important, and generally, the JTAG port is more commonly used. Therefore, I believe that some experts must have encountered issues with the JTAG port becoming unresponsive or damaged and unable to be used. … Read more

What Is JTAG? Understanding Its Basics and Applications

What Is JTAG? Understanding Its Basics and Applications

JTAG is an IEEE standard (1149.1) developed in the 1980s to address manufacturing issues in electronic boards. Today, it can be used for programming, debugging, and probing ports. But first, let’s look at JTAG’s original purpose: boundary testing. Boundary Testing This is a simple electronic board (also known as a “Printed Circuit Board” or “PCB”) … Read more

Understanding JTAG Interface: Key Insights

Understanding JTAG Interface: Key Insights

Welcome to the world of FPGA technology. In this vast realm, meeting is fate. You can follow FPGA technology to gain other resources of interest in the “adventurous journey” and “heroic deeds” sections, or share a drink and chat. “Cooking wine and chatting” leads to the IC technology circle, where there are nearly 50 IC … Read more

Understanding JTAG: What You Know and Don’t Know

Understanding JTAG: What You Know and Don't Know

Welcome FPGA engineers to join the official WeChat technical group Clickthe blue textto follow our FPGA home – the best and largest pure FPGA engineer community in China 01 Introduction to JTAG JTAG (Joint Test Action Group) is an interface, and a group called the JTAG group was established for this interface in 1985. In … Read more

Understanding JTAG Boundary Scan Technology

Understanding JTAG Boundary Scan Technology

Follow our public account for timely updates on new articles. Introduction: Engineers engaged in hardware, embedded systems, or chip-related fields are likely familiar with JTAG. JTAG primarily has three main uses: Testing and Diagnosis: Initially, the main purpose of JTAG was for testing and diagnosing integrated circuits, used to detect and repair defects in the … Read more

Troubleshooting JTAG Connection Issues

Troubleshooting JTAG Connection Issues

Wu Jianying Microcontroller Development Board Address Shop:【Wu Jianying’s Shop】 Address:【https://item.taobao.com/item.htm?_u=ukgdp5a7629&id=524088004171】 This article contains two parts: 1) Continuing the discussion on the TI DSP connection issues; 2) Briefly mentioning the Xilinx FPGA JTAG connection issues. 1. Why Can’t the TI DSP Connect? Half a year ago, I published a blog post titled “Why Can’t the DSP … Read more

Hardware Design – JTAG Chain

Hardware Design - JTAG Chain

01 JTAG (Joint Test Action Group) is an international standard testing protocol (IEEE 1149.1 compliant) primarily used for internal chip testing. Most advanced devices now support the JTAG protocol, such as DSPs and FPGAs. The standard JTAG interface consists of four lines: TMS (Test Mode Select), TCK (Test Clock Input), TDI (Test Data Input), and … Read more

What Is JTAG?

What Is JTAG?

Welcome FPGA engineers to join the official WeChat technical group. ClickBlue WordsFollow us at FPGA Home – the largest pure engineer community in China. JTAG is an IEEE standard (1149.1) developed in the 1980s to solve electronic board manufacturing issues. Nowadays, it can be used for programming, debugging, and probing ports. But first, let’s look … Read more

Understanding JTAG Interface: Common Issues and Solutions

Understanding JTAG Interface: Common Issues and Solutions

Source: FPGA Resource Hero In the process of FPGA development and learning, a critical step is the board download implementation. Achieving hardware “hard realization” is crucial, and generally, the JTAG interface is more commonly used. Therefore, many experts must have encountered issues with the JTAG interface malfunctioning or being damaged and unusable. Recently, I faced … Read more