8.2.3. Boundary Scan (IEEE 1149.1, JTAG)

Try these first

1. 1.

   What is Boundary Scan primarily used for?

   Hint

   Think about why we test connections and the difficulties involved.

2. 2.

   Does Boundary Scan test internal logic of circuits?

   Hint

   Focus on what Boundary Scan is designed to do.

3. 3.

   What does Boundary Scan primarily test?

   • Internal circuitry
   • Memory usage
   • Interconnections

   Hint

   Think about what you cannot physically access easily.

4. 4.

   True or False: TAP allows direct observation of the internal logic of ICs.

   • True
   • False

   Hint

   Consider the function of TAP in relation to the circuit it connects.

5. 5.

   Design a hypothetical circuit environment using Boundary Scan and describe the steps you would take to test it.

   Hint

   Think about how you would set up connections without access to components.

6. 6.

   Analyze the effectiveness of Boundary Scan in a mixed-signal environment that contains both digital and analog circuits. What would be the limitations?

   Hint

   Reflect on the differences in testing approaches between digital and analog technology.