Vlsi-asic Digital Design Interview Questions & Answer Pdf MergeVLSI Design Interview Questions With Answers – Ebook Most frequently asked VLSI interview questions answered Search Main menu Skip to primary content Skip to secondary content Home Answers Backend (Physical Design) Interview Questions and Answers What is the difference between FPGA and ASIC? Clock Gating Companywise ASIC/VLSI Interview Questions Embedded System for Automatic Washing Machine using Microchip PIC18F Series. ASIC- System on Chip- VLSI Design: Digital design Interview Questions. If inverted output of D flip- flop is connected to its input how the flip- flop behaves? Design a circuit to divide input frequency by 2? Design a divide by two counter using D- Latch. Design a divide- by- 3 sequential circuit with 5. What are the different types of adder implementation? Draw a Transmission Gate- based D- Latch? Give the truth table for a Half Adder. Give a gate level implementation of the same. Design an OR gate from 2: 1 MUX. What is the difference between a LATCH and a FLIP- FLOP? Design a D Flip- Flop from two latches. Design a 2 bit counter using D Flip- Flop. Digital Design interview questions: 1. Give two ways of converting a two input NAND gate to an inverter 2. Different Types of Delays in ASIC or VLSI design Source Delay/Latency Network Delay/Latency Insertion Delay Transition Delay/Slew: Rise time, fall time. Answer to Questions of LecAnswer to Questions of Lec--1 Q2. How reliability of a VLSI circuit is related to its power dissipationdissipation? AnsAns: It has been observed that : It has been observed that every very 1100 Application I applied online. The process took 2+ weeks. I interviewed at Qualcomm (San Jose, CA) in May 2013. Interview I had a telephonic interview. It was with the team manager and he was very calm and attentive to my answers. He directly told during the. I usually start an interview for logic design/verification position with a simple question that filters half of the candidates: what is the value of decimal number 13 in hex, binary and octal. Which are the semiconductor, VLSI, or ASIC verification start ups in India? Specially in Banglore, Chennai. What are the two types of delays in any digital system. Design a Transparent Latch using a 2: 1 Mux. Design a 4: 1 Mux using 2: 1 Mux's. What is metastable state? Analog Questions 2 (Dowload pdf) Analog Interview Questions Download-II Analog Questions 2 (Dowload pdf) Analog Questions-2 Answers (1) a- True b- True c-True. Digital design Interview Questions If inverted output of D flip-flop is connected to its input how the flip-flop behaves? Backend (Physical Design) Interview Questions and Answers Process-Voltage-Temperature (PVT) Variations and Static Timing Analysis. Our digital library hosts in multiple countries, allowing you to get the most less latency time to download any of our books like this. Understanding fundamentals of Digital logic design is an essential skill for performing any job in the VLSI industry. Hence, irrespective of whether the interview is for an ASIC design job, or verification job, or for backend design job or layout job, questions that test. How does it occur? What is metastablity? Design a 3: 8 decoder. Design a FSM to detect sequence ? How to avoid it? Design a 4 bit Gray Counter? Design 4- bit synchronous counter, asynchronous counter? Design a 1. 6 byte asynchronous FIFO? What is the difference between a EEPROM and FLASH? What is the difference between a NAND- based Flash and NOR- based Flash? Which one is good: asynchronous reset or synchronous reset? Why? Design a simple circuit based on combinational logic to double the output frequency. What is the difference between flip- flop and latch? Implement comparator using combinational logic, that compares two 2- bit numbers A and B. The comparator should have 3 outputs: A > B, A < a =. Why are most interrupts active low? How do you detect if two 8- bit signals are same? After how many clock cycles will it return to the initial state? Design all the basic gates NOT, AND, OR, NAND, NOR, XOR, XNOR using 2: 1 Multiplexer. How will you implement a full subtractor from a full adder? In a 3- bit Johnson's counter what are the unused states? What is difference between RAM and FIFO? What is an LFSR? List a few of its industry applications. Implement the following circuits: (a) 3 input NAND gate using minimum number of 2 input NAND gates(b) 3 input NOR gate using minimum number of 2 input NOR gates(c) 3 input XNOR gate using minimum number of 2 input XNOR gates assuming 3 inputs A,B,C? Design a D- latch using (a) using 2: 1 Mux (b) from S- R Latch? How to implement a Master Slave flip flop using a 2 to 1 mux? How many 2 input xor's are needed to inplement 1. Convert xor gate to buffer and inverter. Difference between onehot and binary encoding? What are different ways to synchronize between two clock domains? How to calculate maximum operating frequency? How to find out longest path? How to achieve 1. What is significance of ras and cas in SDRAM? Tell some of applications of buffer? Implement an AND gate using mux? What will happen if contents of register are shifter left, right? What is the basic difference between analog and digital design? What advantages do synchronous counters have over asynchronous counters? What types of flip- flops can be used to implement the memory elements of a counter? What are the advantages of using a microprocessor to implement a counter rather than the conventional method (flip- flop and logic gates)? What is the principal advantage of Gray Code over straight (conventional) binary? What does Pipelining do? Design divide by 2, divide by 3 circuit with equal duty cycle. How many 4: 1 mux do you need to design a 8: 1 mux? What is D- Word, Q- word? Define Moore, Mealy state machines. Which one is good for timing? Design a FSM to detect 1. What is the minimum number of flops required? Design a simple circuit based on combinational logic todouble the output frequency. Design a 2bit up/down counter with clear using gates. Give a gate level implementation of the same. Convert 6. 5(Hex) to Binary. Convert a number to its two's compliment and back. What is the 1's and 2's complement of the decimal number 2. If A? B=C and C? A=B then what is the boolean operator ?
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