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Physical Design Interview Questions
711 physical design interview questions shared by candidates
What is Antenna violation? Tell me about PV flow What is the importance of PV
Can you explain 5 level of working of an Inverter
describe the syn/apr process setup/hold time violation and fix
what is setup and hold time, how to fix violation about them.
Questions mainly based on resume and a few STA questions, questions based on CMOS.
What was the major challenge you faced while working on this project?
Explain flow from RTL TO GDS11 in a design project i have done, how signal integrity affects the hold and setup times.
He asked me about my design project which I did during my Masters, Timing analysis, Flipflops, PD Flow
STA, CTS, Floor planning, Logic Circuits, PNR 1. What is OCV and derate factors 2. Calculation of setup and hold slack (Given values, Thold, Tsetup, Tlogic, derate factors) 3. How to reduce setup violations and hold violations? 4. Difference between H-tree and Mesh? 5. Techniques to reduce clock power? 6. Low power design techniques 7. What is Multi Bit FF? 8. Draw basic logic gates (And) using NOR (NAND) gates? 9. Crosstalk glitches? 10. Placement of macros questions 11. How to calculate channel spacing between macros/ 12. SRAM design questions 13. Physical only cells- Tap cells, Tie cells use and where do we place them 14. How Delay of a net/cell changes with VDD/ 15. Capacitance and Resistance of wire effects on delay and how to reduce it? 16. How to reduce static, Dynamic, short -circuit power? 17. Where to use LVT, HVT cells? 18. Difference between local skew and global skew? 19. Verilog Coding question- Synchronous and Asynchronous DFF 20. What is the use of End cap cells and Decap cells?
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