Microchip Technology Dft Design Engineer Interview Questions and Answers

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

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

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

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

A C program to generate Fibonacci series

• Declare variables to store current and previous Fibonacci numbers

• Use a loop to calculate and print Fibonacci numbers

• Handle edge cases like 0 and 1 separately

A up counter circuit is a digital circuit that counts upwards in binary sequence.

• Use flip-flops to store the count value

• Connect the output of one flip-flop to the clock input of the next flip-flop

• Use logic gates to control the counting sequence

• Add a reset input to clear the count when needed