6.3. Challenges in Scan Chain Implementation

Try these first

1. 1.

   What increases the complexity of a design when implementing scan chains?

   Hint

   Think about what components are added.

2. 2.

   What is a benefit of using test pattern compression?

   Hint

   What does compression generally do?

3. 3.

   What does increased design complexity refer to in scan chain implementation?

   • Increase in area
   • Decrease in performance
   • Both A and B

   Hint

   Consider the impacts of adding components.

4. 4.

   True or False: Test pattern compression only reduces test time and not power consumption.

   • True
   • False

   Hint

   Think about compression and efficiency.

5. 5.

   Given a scenario of implementing a scan chain in a large SoC, identify potential power optimization strategies and justify their importance.

   Hint

   Focus on the techniques that limit unnecessary power use.

6. 6.

   Discuss how one could balance the trade-offs between the increased area due to scan chains and the benefits they provide, including an example.

   Hint

   Weigh both pros and cons carefully.