AppendixAUnit8_5Sol

AppendixAUnit8_5Sol - 8.5 Unit 5 State Machines Sequential Components 1 We should find the state diagram following the steps in the class notes a

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
350 8.5. Unit 5 – State Machines & Sequential Components 1. We should find the state diagram following the steps in the class notes a. Find the excitation equations for D 0 and D 1 . D 0 = Q 1 · Y + Q 0 · X D 1 = Q 1 · Q 0 · X b. Find the transition equations using D Flip-flops. According to the characteristic equation of the D Flip-flop, we get the transition equations below: Q 0 * = Q 1 · Y + Q 0 · X Q 1 * = Q 1 · Q 0 · X c. The equation for outputs of the state machine is: Z = Q 0 · X d. Construct transition/output table Current State Next State Output XY= 00 XY= 01 XY= 10 XY= 11 XY=00 XY=01 XY=10 XY=11 Q 1 Q 0 Q 1 * Q 0 * Q 1 * Q 0 * Q 1 * Q 0 * Q 1 * Q 0 * Z Z Z Z 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 0 0 1 0 0 0 1 0 0 0 0 1 1 0 0 0 1 0 1 0 1 0 0 1 1 e. Substitute symbolic state names for the codes. Current State Next State Output XY= 00 XY= 01 XY= 10 XY= 11 XY=00 XY=01 XY=10 XY=11 State Next State Next State Next State Next State Z Z Z Z SA SA SA SC SC 0 0 0 0 SB SA SA SB SB 0 0 1 1 SC SA SB SA SB 0 0 0 0 SD SA SB SB SB 0 0 1 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
351 f. Draw the state diagram 2. First, we should find the state diagram following the steps in the class notes. a. Find the excitation equations for J0, J1, K0 and K1. J 0 = Restart’ K 0 = 1 J 1 = Q 0 · Restart’ K 1 = Restart + Q 0 b. Find the transition equations using JK Flip-flops. According to the characteristic equation of the JK Flip-flop, we get the transition equations below: Q 0 * = J 0 · Q 0 + K 0 · Q 0 = Restart’ · Q 0 Q 1 * = J 1 · Q 1 + K 1 · Q 1 = Q 0 · Restart’ · Q 1 + Q 0 · Restart’ · Q 1 c.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/23/2008 for the course EE 101 taught by Professor Redekopp during the Fall '06 term at USC.

Page1 / 9

AppendixAUnit8_5Sol - 8.5 Unit 5 State Machines Sequential Components 1 We should find the state diagram following the steps in the class notes a

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online