VLSI Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

VLSI Interview Questions

Questions Answers Views Company eMail

Explain the difference between write through and write back cache.

Intel,

2 16611

Are you familiar with the term MESI?

Intel,

2744

Are you familiar with the term snooping?

Intel,

3526

Describe a finite state machine that will detect three consecutive coin tosses (of one coin) that results in heads.

Intel, Sun Microsystems,

2841

In what cases do you need to double clock a signal before presenting it to a synchronous state machine?

Intel,

1 5542

You have a driver that drives a long signal & connects to an input device. At the input device there is either overshoot, undershoot or signal threshold violations, what can be done to correct this problem?

Intel,

2676

Are you familiar with VHDL and/or Verilog?

Intel,

1 4430

What types of CMOS memories have you designed? What were their size? Speed?

e-tec, Intel,

3144

What work have you done on full chip Clock and Power distribution? What process technology and budgets were used?

Intel,

2891

What types of I/O have you designed? What were their size? Speed? Configuration? Voltage requirements?

Intel,

2442

Process technology? What package was used and how did you model the package/system? What parasitic effects were considered?

Intel,

2337

What types of high speed CMOS circuits have you designed?

Intel,

2577

What transistor level design tools are you proficient with? What types of designs were they used on?

Intel,

3448

What products have you designed which have entered high volume production?

Intel,

2448

What was your role in the silicon evaluation or product ramp? What tools did you use?

Intel,

2328

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Un-Answered Questions { VLSI }

Process technology? What package was used and how did you model the package/system? What parasitic effects were considered?

3145

What are the main issues associated with multiprocessor caches and how might you solve them?

2237

How logical gates are controlled by boolean logic?

1075

Explain what is slack?

1073

What is look up table in vlsi?

986

2676

What is the difference between the mealy and moore state machine?

1121

Explain the working of 4-bit Up/down Counter?

4439

Describe the various effects of scaling?

4795

Write a VLSI program that implements a toll booth controller?

3988

If the current through the poly is 20nA and the contact can take a max current of 10nA how would u overcome the problem?

1124

Draw the stick diagram of a NOR gate. Optimize it

1293

Approximately, what were the sizes of your transistors in the SRAM cell? How did you arrive at those sizes?

1149

What are the Factors affecting Power Consumption on a chip?

1286

Explain what is scr (silicon controlled rectifier)?

1064

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