Questions on On chip variation and what causes them. Was asked how I'd model them. i mentioned timing derates -which are a very old technique. Was asked if i worked with AOCV models. Was asked few questions on clock jitter
Senior Design Interview Questions
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Design a synch FIFO. Was asked a simplified version. Was asked to assume depth of FIFO was 4 and width was 32. He was just looking for how and when I'd update the memory buffer and the control logic for the free and avail Was given a verilog module and asked to figure out what it was doing. Noticed that it was a round robin-ish arbiter. Later was asked if there was any case where starvation (live lock) was possible. It became clear as I was working thru the waveforms there was a specific case where the arbiter can starve any of the requests. Then I was asked to fix the code. Also I was asked how would we catch issue like this. I mentioned that Formal Prop Verif tools are the best vehicles to find bugs on such designs
Describe your current role. Send a pulse from one clock to another clock. How to send data from one clock domain to another. Minimum sizing of an async FIFO
mosthy they asked about the previous experience,projects and verified the knowledge on those projects and baground verification.
4. How always @ (posedge reset or negedge clk) synthesized
2. CDC and Types of synchronizer
> Basics of PnR flow issues w.r.to congestion, cts, placement. > Any issues which faced in your previous project , how did you fix that ? > You should know about everything you write in the resume.
The initial interview is basically about brief personal background and experience in general form; plus some sharing session on how you dealt certain workplace situations. It gets more detail about skills and projects during the interview with the Managing Director and Design Director. You will present your portfolio and questions come along about the scope and your contribution based on what has been presented. Do you work hard? What is your expected salary? How do you convince the client or what do you do if what the client wanted turns out/ resulted in a different direction? The interview is spontaneous, straightforward and very engaging.
Amplifiers, Conjugate Matching, Capacitances, Filters
design async fifo
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