Western Digital Design & Verification Engineer Interview Questions and Answers

A monitor for APB protocol is a verification component that checks for protocol compliance in APB transactions.

• Monitor should check for valid address, data, and control signals in APB transactions

• It should detect and report any protocol violations or errors

• Monitor should be able to track the state of the APB bus and ensure proper communication between master and slave devices

Design a finite state machine to count the number of people passing through a hallway with 2 detectors, allowing only one person at a time.

• Create states for each detector and the hallway

• Transition between states based on detector inputs

• Use counters to keep track of the number of people passing through

• Implement logic to prevent multiple people from passing simultaneously