9.2.1. IEEE 1149.1 – Boundary Scan (JTAG)

Try these first

1. 1.

   What does JTAG stand for?

   Hint

   Think about what the acronym represents in testing.

2. 2.

   What is the purpose of boundary scan cells?

   Hint

   Remember how it facilitates testing without physical access.

3. 3.

   What does JTAG stand for?

   • Joint Test Action Group
   • Joint Testing Action Group
   • Just Test Action Group

   Hint

   Look for the words that reflect teamwork in testing.

4. 4.

   True or False: JTAG allows for physical probing of IC connections.

   • True
   • False

   Hint

   Remember the primary purpose of boundary scan.

5. 5.

   A manufacturer must choose between traditional testing methods and JTAG for a new product line. Analyze the benefits and drawbacks of each that could influence their decision.

   Hint

   Consider efficiency, effectiveness, and cost.

6. 6.

   If an IC using JTAG experiences intermittent faults, suggest a systematic approach to troubleshoot using JTAG capabilities.

   Hint

   Think about how JTAG can isolate sections of the circuit.