[Free] Jtag And Spi Protocol
JTAG and SPI Protocol – Free Course
What you’ll learn
- Definition of JTAG (Joint Test Action Group).
- Purpose of JTAG in hardware testing and debugging.
- Typical use cases, including testing PCBs and programming FPGAs.
- Concept of boundary scan technology.
- How boundary scan enables testing without physical probes.
- The role of boundary scan in detecting manufacturing defects.
- Explanation of the TAP controller.
- Functions of each TAP pin (TDI, TDO, TCK, TMS, TRST).
- How TAP facilitates communication with boundary scan cells.
- Structure and operation of boundary scan cells.
- How they interface with device I/O and internal logic.
- Using boundary scan cells for observing and controlling pin states.
- What SPI is and where it is used.
- Key features of SPI: full-duplex communication, simplicity, and high speed.
- Typical applications in embedded systems and peripheral communication.
- The roles of Master and Slave devices in SPI.
- How the Master generates the clock and initiates communication.
- How Slave devices respond to the Master.
- Detailed explanation of how data is transmitted via MOSI and MISO lines.
- The function of SCLK (Serial Clock) and SS (Slave select) lines.
- The bidirectional data flow in full-duplex mode.
- Explanation of CPOL and CPHA settings.
- How these settings affect data sampling and data shifting.
- Importance of matching clock settings between Master and Slave.
- SPI Mode 0 (CPOL = 0, CPHA = 0): Data is sampled on the rising edge of the clock.
- SPI Mode 1 (CPOL = 0, CPHA = 1): Data is sampled on the falling edge of the clock.
- SPI Mode 2 (CPOL = 1, CPHA = 0): Data is sampled on the falling edge, with an idle high clock.
- SPI Mode 3 (CPOL = 1, CPHA = 1): Data is sampled on the rising edge, with an idle high clock.
- How to connect multiple Slave devices to a single Master.
- How the SS line is used to select different Slave devices.
- Considerations for wiring and communication management.
- Explanation of the daisy-chain configuration.
- How data is passed through multiple Slave devices in a series.
- Advantages and limitations of the daisy-chain approach.
Requirements
- The only requirement is a willingness to learn. This course is designed for beginners and is open to anyone interested in learning about hardware communication protocols, regardless of their prior knowledge or experience.
Description
This course offers a comprehensive introduction to both JTAG (Joint Test Action Group) and SPI (Serial Peripheral Interface) protocols. It is designed for beginners with no prerequisites other than a willingness to learn. Students will gain a solid understanding of the fundamentals, practical applications, and theoretical knowledge of these essential hardware communication protocols. The course covers JTAG concepts such as boundary scan, Test Access Port (TAP), and boundary scan cells, alongside SPI topics including communication modes, master-slave configurations, clock polarity and phase, and multi-slave setups. Whether you are a student, hobbyist, or professional, this course will guide you through each step with clear explanations and practical examples to help you effectively use JTAG and SPI protocols in hardware design and testing. Additionally, students will explore real-world scenarios where JTAG aids in debugging and testing complex hardware systems, while SPI provides efficient data transfer between microcontrollers and peripheral devices. By the end of the course, participants will have a robust theoretical foundation, understanding the critical roles of JTAG in hardware testing and debugging and SPI in enabling seamless communication in embedded systems. The curriculum is designed to present complex concepts in a simplified manner, making it accessible to all learners and helping them build confidence in understanding and applying hardware protocols effectively. Author(s): PySolve Semiconductors
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