I had to go through video telephony interview. It was based on basic digital electronics and some riddles. They also asked about projects written in resume and asked couple of questions on those.

I applied through the referral. There were total 6 rounds, in which 4 were technical physical rounds. Next day, I had one HR round and one telephonic interview of technical part one week later. The whole process took almost two weeks to complete. The questions covered were mostly of ASIC designing and VLSI Digital Basics. Having strong academic command on basics would be enough to crack the interviews.