Texas Instruments Dft Intern Interview Questions, Process, and Tips

Q1. What do you know about Bill of Materials
Ans. 
Bill of Materials (BOM) is a comprehensive list of raw materials, components, and assemblies required to build a product.
• BOM is used in manufacturing to ensure all necessary materials are available for production.

• It includes details such as part numbers, quantities, and descriptions of each item.

• BOM can be hierarchical, with sub-assemblies listed under main assemblies.

• It helps in cost estimation, inventory management, ...read more
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Q2. Name a time you had conflict with a co worker and how did you resolve it
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Q1. First round was with DFT Head. He seemed little arrogant. Asked me basic DFT questions like wrapper architecture, working and how flops will be handled in case of setup and hold.
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Q2. He also asked me about work I have done
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Q1. This was 3 hours back to back interview. In first round, All questions were on scan architecture, need of lockup latches, ATPG Basics, compression architecture etc. Second round was more on the challenges ...read more
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Q1. CGPA over 8 was the criteria
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Logical Reasoning, Verbal Reasoning , Quantitative Ability, Digital Electronics
DSP, C, Verilog, Digital Design

Q1. Array addition of two numbers
Ans. 
Add two numbers represented as arrays
• Iterate through the arrays from right to left, adding digits and carrying over if necessary

• Handle cases where one array is longer than the other

• Return the result as a new array
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Q2. Access modifiers in java
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Access modifiers in Java control the visibility of classes, methods, and variables.
• There are four types of access modifiers in Java: public, protected, default (no modifier), and private.

• Public: accessible from any other class.

• Protected: accessible within the same package or subclasses.

• Default: accessible only within the same package.

• Private: accessible only within the same class.

• Example: public class MyClass {}
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Q3. Complete code of all projects
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It is not common practice to provide complete code of all projects in an interview setting.
• It is not recommended to share complete code of all projects due to confidentiality and intellectual property concerns.

• Instead, focus on discussing the technologies used, challenges faced, and solutions implemented in your projects.

• Provide code snippets or high-level overviews of your projects to showcase your skills and experien
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Q4. Deep learning- Yolov5 architecture, details on kernel size, reason for choosing Yolov5, preprocessing techniques
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Q5. BLE(Bluetooth Low Energy), Macros in C
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The General Aptitude Questions from the Sites are being asked

Java concepts, Arraylists, and hashmaps were being asked to use in a solution.

3 coding questions out of which 2 are easy and 1 is medium

Q1. 2 Interviewers kept on asking to write codes for each and every question they ask. I was given a tree problem and coded everything from scratch and executed written test cases and again I was asked to solv...read more
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Q1. Experience with Power BI
Ans. 
I have experience using Power BI to create interactive visualizations and analyze data.
• Created interactive dashboards to track key performance indicators

• Used Power Query to clean and transform data for analysis

• Utilized DAX formulas to calculate metrics and create custom measures
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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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