5.3. Role of Scan Chains in Serial Testing

Try these first

1. 1.

   What is a scan chain?

   Hint

   Consider how testability relates to internal states.

2. 2.

   What purpose does serial testing serve?

   Hint

   Think about how testing is structured over time.

3. 3.

   What is the purpose of scan chains in serial testing?

   • To apply test vectors serially
   • To enhance design complexity
   • To observe analog states

   Hint

   Consider their primary function in testing.

4. 4.

   True or False: Scan chains can help detect stuck-at faults.

   • True
   • False

   Hint

   Reflect on the types of faults discussed.

5. 5.

   Propose a design that integrates scan chains into a digital system while minimizing complexity. Discuss potential trade-offs.

   Hint

   Consider how to simplify while ensuring accessibility.

6. 6.

   Evaluate a complex digital system’s ability to use scan chains effectively. Identify potential fault types that might elude detection.

   Hint

   Think about the various complexities in multilevel systems.