As an embedded engineer, everyone should know about download debuggers. But do you really understand the meaning and differences of the SWD and JTAG interfaces? What is a Download Debugger? In simple terms, a download debugger is a device that converts commands sent from a PC (e.g., via USB protocol) into a language understood by … Read more
As an embedded engineer, you should know about download debuggers, but do you really understand the meaning and differences between the SWD and JTAG interfaces? 01 What is a Download Debugger In simple terms, a download debugger is a device that converts commands sent from a PC (for example, via USB protocol) into a language … Read more
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Do you understand the meaning of each JTAG pin? JTAG has 10-pin, 14-pin, and 20-pin versions. Although the number of pins and the arrangement order differ, some of the pins are the same. The definitions of each pin are as follows. 1. Pin Definitions Test Clock Input (TCK) —– Required 1 TCK is a mandatory … Read more
Today, I bring you an ultra low-cost FPGA JTAG solution, where the hardware core is based on the Raspberry Pi Pico. Using related chips to create your own JTAG is very cheap; the RP2040 is priced at only 4 yuan on Taobao, making the production cost extremely low. Of course, the cost of using the … Read more
1. JTAG Protocol JTAG (Joint Test Action Group) is an international standard testing protocol (IEEE 1149.1 compatible), primarily used for internal chip testing. Most advanced devices today support the JTAG protocol, such as ARM, DSP, and FPGA devices. The standard JTAG interface consists of 4 lines: TMS, TCK, TDI, and TDO, which correspond to test … Read more
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
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
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
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