Practice What Is A Scan Chain? (5.2.1) - Scan Chains and Serial Testing

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6 sample questions

Question 1.
What does a scan chain consist of?
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Think about what elements are needed for testing internal states.
Question 2.
What does scan-in mean?
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It's the opposite of the output process.
3Question 3.
What is the primary function of a scan chain?
- To encode data
- To facilitate testing
- To store data
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Think about its role in observing internal conditions.
4Question 4.
Scan-in and Scan-out refer to?
- True
- False
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Consider what the terms imply in terms of data flow.
Question 5.
Design a basic scan chain for a 4-bit counter. Describe how you would implement scan-in and scan-out processes.
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Visualizing the data flow can help simplify the design.
Question 6.
Evaluate how the presence of scan chains might affect the overall design of an IC. Discuss potential trade-offs between efficiency and complexity.
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Think about what benefits might justify the added complexity.

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