6.4. Optimization Techniques for Scan Chains

Try these first

1. 1.

   What is a scan chain?

   Hint

   Think about how circuits can be tested effectively.

2. 2.

   What technique is used to reduce power during testing?

   Hint

   Consider how parts of a circuit can be turned off.

3. 3.

   What is the purpose of scan chain partitioning?

   • To increase the length of the scan chain
   • To split the scan chain into smaller parts for parallel testing
   • To connect more flip-flops

   Hint

   Think about how to make the testing process faster.

4. 4.

   True or False: Power gating can help in reducing the area of a circuit.

   • True
   • False

   Hint

   Consider what each technique is targeted at.

5. 5.

   Discuss the trade-offs involved in using redundant flip-flops versus maintaining a minimal design. What are the implications for testing and overall circuit performance?

   Hint

   Consider the balance between thoroughness and simplicity.

6. 6.

   Create a testing strategy for a circuit using both static and dynamic scan length optimization techniques. What factors will influence your decisions?

   Hint

   Consider how different testing environments might impact your strategy.