Questions

ECE260B_WI25_A00 ECE260B Midterm - Winter 2025

Multiple fill-in-the-blank

Assume the required time at output f is 5.80. Please calculate the required time for x and the origin. Note: The value inside the circle represents the delay of the gate. The value around the edge represents the delay of the wire. Required time for x: [Fill in the blank], Required time for origin: [Fill in the blank],

Options

A.4.6

B.4.60

C.0.8

D.0.80

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Step-by-Step Analysis

To tackle this type of timing problem, I’ll first restate what we’re given and what we’re solving for, then walk through each option to see how it fits with the overall timing goal. - Given: The required time at output f is 5.80 (units of time). The diagram shows a combination of gate delays and wire delays. The value inside a circle is the gate delay, while the values around the edges are wire delays. The blocks labeled F(), Q(), and Z() carry gate delays, and the purple bars along the wires carry wire delays. - We need to determine two individual required times: one for x and one for origin, such that the total timing constraint at the output f is satisfied when all path delays (gate delays plus wire delays along the path) are accounted for. Now, I’ll analyze the given answer options one by one in the context of the timing constraint, explaining why each is plausible or not. Option A: x = 4.6 - If x must contribute a ......Login to view full explanation

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