Two distinct execution engines on an AI accelerator communicate via an un-synchronized handshake signal. Engine A pulses its output line for exactly 6 ns. Engine B samples this line using an internal sampling clock running at a frequency of 200 MHz. What is the precise probability that Engine B will completely miss detecting a pulse from Engine A during any single random transmission cycle?
Let's calculate the clock period of Engine B:
T = 1/200 = 5ns
The pulse width from Engine A is 6 ns. Since the pulse width (6 ns) is strictly greater than the sampling clock period of Engine B (5 ns), the signal is physically guaranteed to be high during at least one rising edge of Engine B’s clock, regardless of the relative phase alignment between the two domains. Therefore, the probability of completely missing the pulse due to timing window exclusion is 0%.
