Asynchrony and Arbitration

2/26/98


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Table of Contents

Asynchrony and Arbitration

Recap: Flip-Flop Timing Rules

Asynchronous Inputs

Asynchronous Bounded-Time Arbiter

Asynchronous Bounded-Time Arbiter - 2

R-S Latch in Flip-Flop

Possible States of R-S Latch

PPT Slide

PPT Slide

Metastability and Arbitration

Demonstration Circuit

Observed Behavior

A Simple Model of Metastability

Evolution of Vout

Probability of Staying Metastable

Suppose we wait 100 ns...

Simple and Practical Solution

What we canít and can build

Everyday Metastability: Traffic Light Problem

Next Time: Pipelining

Author: Srinivas Devadas

Email: devadas@mit.edu

Home Page: http://cag-www.lcs.mit.edu/6.004

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