1 / 7

CS 140L Lecture 7 Transformation between Mealy and Moore Machines

CS 140L Lecture 7 Transformation between Mealy and Moore Machines. Professor CK Cheng CSE Dept. UC San Diego. Outlines. Framework Procedure Example: Transform Example: State Diagram Example: Output Sequence. Transform from Mealy to Moore Machine. Mealy Machine: y(t) = f(x(t), s(t))

jonny
Download Presentation

CS 140L Lecture 7 Transformation between Mealy and Moore Machines

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CS 140L Lecture 7Transformation between Mealy and Moore Machines Professor CK Cheng CSE Dept. UC San Diego

  2. Outlines • Framework • Procedure • Example: Transform • Example: State Diagram • Example: Output Sequence

  3. Transform from Mealy to Moore Machine Mealy Machine: y(t) = f(x(t), s(t)) Moore Machine: y(t) = f(s(t)) s(t+1) = g(x(t), s(t)) x(t) x(t) C1 C2 y(t) C1 C2 y(t) CLK CLK s(t) s(t) Moore Machine Mealy Machine

  4. Transform from Mealy to Moore Machine Algorithm Input: State Table of Mealy machine 1) For each NS, z = Si,yj create a state Si(j) 2) For each new state Si(j), repeat the row PS = Si 3) Replace NS, z = Si,yj with state Si(j). Set output z = yj for row PS = Si(j)

  5. Example Mealy Machine: PS A B 00 A,0 A,1 01 A,1 B,0 10 B,0 B,0 (x,y) (NS, z) Moore Machine: PS A0 A1 B (x,y) 00 A0 A0 A1 01 A1 A1 B 10 B B B z 0 1 0

  6. State Diagram 00/0, 01/1 10/0, 01/0 Mealy Machine 10 01 10/0 00 B A 10 A0/0 B/0 00/1 10 00 01 00 Moore Machine A1/1 01

  7. Timing Diagrams Time step x y S z S z 0 0 0 A 0 A0 0 1 0 1 A 1 A0 0 2 1 0 A 0 A1 1 3 0 0 B 1 B 0 4 0 1 A 1 A1 1 5 0 1 A 1 A1 1 A Mealy A1 1 Moore The output shifts by one clock from Mealy to Moore machine

More Related