NVIDIA interview questions

Concise Explanation and Question In verification, we build test environments to ensure that hardware will function correctly after production. One common testing tool is the PRBS (Pseudo Random Binary Sequence) mechanism, which generates a predetermined bit sequence that simulates real communication. This mechanism allows the receiver to verify the correctness of the received bits based on previous bits without needing additional information from the transmitter, thus saving valuable resources on the chip. Question: Design a digital circuit that implements the following formula with an initial value of 2: X new = X [ 7 ] ⊕ X [ 6 ] X new ​ =X[7]⊕X[6] Next, design a test circuit that outputs two indications: prbs_ok: An output that will be 1 when the next bit matches the expected one, and 0 otherwise. Counter (counter): Increments by one each time an error in bit detection is identified.