Outline

4/20/98


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Table of Contents

Outline

Asynchronous Circuits (Feedback Sequential Circuits)

Asynchronous Circuits

D Latch Example

D Latch Example: Transition Table

D Latch Example: State Table

Transition Table

Total State

D Latch Example: Output Equations

Races

Analysis Example: Positive Edge-Triggered D Flip-Flop

Transition Table for D Flip-Flop

State and Output Table for D Flip-Flop

Flow and Output Table for the D Flip-Flop

Steps to Asynchronous FSM Design

Design Example 1: Word Problem

Derivation of Primitive Flow Table: Cont.

Derivation of Primitive Flow Table: Cont.

Design Example 2: Word Problem

Derivation of Primitive Flow Table: Cont.

Derivation of Primitive Flow Table: Cont.

Steps to Asynchronous FSM Design

Minimum-Row Primitive Flow Table: Eliminate Redundant Stable Total States

Removal of Redundant States: Example

Removal of Redundant States: Example

Email: rnewton@ic.eecs.berkeley.edu

Home Page: http://www-inst.eecs.berkeley.edu/~cs150