Applied through the university career fair. Received a call for a phone interview two weeks after applying.

The phone interview was 50 minutes long and included basic questions about embedded systems and real-time concepts. A couple of days of brush-up should see you through this.

The on-site interview had six rounds, including a lunch interview. Numerous questions on real-time concepts were asked, so ensure you understand the complete memory layout. Assembly and pseudo-code were requested. Questions related to your projects, especially those closely aligned with their work, were explored in depth.

A couple of questions on my major (DSP/com) were asked, and I was caught off guard. This, I believe, had a major impact on the result.