Broadcom Interview Questions and Answers for Experienced

Q1. 1st round with hiring manager.Discussion with hiring manager. Reason for switch. Then technical questions on how to debug and find failure flops in a chain. Basic loc,los, loes lock-up latch questions. Why...read more
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Q2. 3 2 hour interviews were taken( Total 6 hours with 1 people in each round). Questions: how we can reduce test time. how serial chain patterns are solved. How T24 violations are debugged, how we can find wh...read more
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Q3. How compression ratio can be tweaked, what are the factors ( how coverage, Patten count gets impacted).
Ans. 
Compression ratio can be tweaked by adjusting the volume of the combustion chamber. This affects fuel efficiency and power output.
• Compression ratio is the ratio of the volume of the combustion chamber at its largest to its smallest.

• Increasing compression ratio can improve fuel efficiency and power output, but too high a ratio can cause engine knocking.

• Factors that impact compression ratio include the size and shape of ...read more
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Q4. How have I observed hold violations and setup violations in my design. What I did after that, etc
Ans. 
I have observed hold and setup violations in my design and took necessary actions.
• I used static timing analysis (STA) to identify hold and setup violations.

• I fixed hold violations by adding delay cells or increasing clock period.

• I fixed setup violations by reducing delay or decreasing clock period.

• I also checked for false paths and multi-cycle paths.

• I re-ran STA after fixing violations to ensure timing closure.

• I docume...read more
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Q5. Purpose of occ controllers. What scan enable signals( pipelined or nonpiplelined) will go to my occ controller, clock chain and why. Lock up latch purpose. If I have 5 negative edge triggered flops and 5 p...read more
Ans. 
Explanation of purpose of occ controllers, scan enable signals, lock up latch and arrangement of negative and positive edge triggered flops.
• The purpose of occ controllers is to manage the clock signals in a design and ensure proper timing.

• Scan enable signals are used for testing and debugging purposes.

• Pipelined signals are used for faster data transfer while non-pipelined signals are used for simpler designs.

• Lock up la...read more
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Q6. How can we reset a tap controller without trst signals. How do you find coverage gaps.
Ans. 
Resetting a tap controller without trst signals and finding coverage gaps.
• For resetting a tap controller without trst signals, we can use a power-on reset circuit or a watchdog timer.

• To find coverage gaps, we can use code coverage analysis tools like CodeSonar, Coverity, or LDRA.

• We can also use dynamic analysis tools like Valgrind or Purify to find runtime errors and coverage gaps.

• Manual testing and peer code reviews c...read more
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Q1. Where do you see yourself in next 5 years
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Q2. What are your hobbies
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Q1. On networking basics
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Basic programming and Algorithms. data structures theory and implementation

Q1. Formality round and nothing was asked.
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