JTAG hardware debugging is a vital technique for diagnosing and debugging hardware and software issues in embedded systems and integrated circuits, making it a valuable tool in the field of electronics design and testing.

  1. Debugging: JTAG is commonly used for debugging embedded systems and microcontrollers. It provides a means to halt the processor’s operation, inspect the contents of registers and memory, and control the execution of code step by step. This is essential for finding and fixing software bugs and hardware issues in embedded systems.
  2. Boundary Scan: JTAG includes a feature called boundary scan, which allows for the testing of interconnections between components on a PCB (Printed Circuit Board). This helps in identifying problems such as open or short circuits and can be instrumental in manufacturing and testing processes.
  3. Programming: JTAG can be used to program firmware and configuration data onto programmable logic devices (FPGAs) and microcontrollers. It provides a standardized way to load software onto these devices during production or field updates.
  4. Chain Configuration: JTAG devices can be connected in a chain, allowing multiple devices on the same bus. This is particularly useful when you have a complex system with several JTAG-enabled components.
  5. Standardized Interface: JTAG uses a standardized pinout and communication protocol, making it compatible across different manufacturers and devices. This ensures that debugging tools and equipment can work with a wide range of hardware.
  6. Non-Intrusive: JTAG debugging is often non-intrusive, meaning that it doesn’t require modifications to the existing circuitry or code to be debugged. This is particularly important for embedded systems where physical access is limited.
  7. Real-Time Debugging: JTAG debugging can provide real-time access to the target hardware, allowing developers to monitor the system’s behavior as it runs in real-time and make adjustments as needed.

Our JTAG-based tools and equipment include JTAG debuggers, in-circuit emulators, and boundary scan testers. These tools are essential for hardware and firmware developers to ensure the reliability and functionality of embedded systems.


Debugging (from wikipedia)

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