Emulation Engineer Interview Questions and Answers

Skew issue in a circuit refers to the difference in arrival times of signals at different parts of the circuit.

• Skew can cause timing violations and affect the overall performance of the circuit.

• Skew can be caused by variations in wire lengths, temperature, voltage, etc.

• Skew can be reduced by using techniques like clock gating, buffer insertion, and proper routing.

• Example: In a flip-flop circuit, if the clock signal arrives at the second flip-flop later than the first one, it ...read more

Sequence detector is a digital circuit that detects a specific sequence of bits in a stream of input data.

• FSM (Finite State Machine) is commonly used to design sequence detectors.

• RTL (Register Transfer Level) describes the behavior of digital circuits using registers and logic gates.

• Example: A sequence detector that detects '1010' in a stream of binary data.

• Example: FSM states for this detector could be S0, S1, S2, S3 representing different parts of the sequence.

FIFO (First In, First Out) is a method for organizing and manipulating a data buffer, where the first element added is the first to be removed.

• FIFO is a queue data structure where elements are added to the end and removed from the front.

• It follows the principle of 'First In, First Out', meaning the first element added is the first to be removed.

• Example: A printer queue where the first document sent to print is the first one to be printed.

• Example: A line at a grocery store whe...read more

On-chip protocols are communication standards used for data transfer within a single integrated circuit.

• On-chip protocols define how different components on a chip communicate with each other

• Common on-chip protocols include AXI, AHB, SPI, I2C, and UART

• These protocols specify the format of data, timing, and control signals for communication

• They help ensure compatibility and interoperability between different components on the chip