First contact may well be from the hiring manager over the phone Technical level will vary from caller to caller but most managers are quite technical. The next step is on-site with your prospective colleagues. You may or may not be asked to code. I had mostly knowledge-based questions but you might be asked more about code. Remember that this is a deeply embedded software product so brush up on your OS fundamentals and computer architecture.

Broadcom had visited our campus on 13th august 2011.They were offering 2 job profiles a software profile and a hardware profile.They had seperate tests for both the profiles but were conducted simultaneously.The test for hardware profile mainly consisted questions on digital electronics,basics of analog and digital communication.For software profile the paper consisted of questions on probabilty,some mathematical puzzles and c programming.The paper was subjective type for software and simple c programs were asked.The paper for hardware was objective type though. Next day people were shortlisted for interview based on test score. They had two rounds of technical interview and the questions were mostly concentrated on fundamentals of wireless communication, coding theory,OFDM.I was asked about the projects which i had mentioned in the cv.The final round was the HR round which was a mere formality.They finally picked 7 people from our college and it was a good experience overall.