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Arbitrary Waveforms

Arbitrary Waveforms. Module M10.5 Section 7.2. State Q2 Q1 Q0 Q2.D Q1.D Q0.D. D. Q. Q0.D. Q0. CLK. !Q. s0 0 0 0 0 0 1 s1 0 0 1 0 1 0 s2 0 1 0 0 1 1 s3 0 1 1 1 0 0 s4 1 0 0 1 0 1 s5 1 0 1 1 1 0 s6 1 1 0 1 1 1

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Arbitrary Waveforms

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  1. Arbitrary Waveforms Module M10.5 Section 7.2

  2. State Q2 Q1 Q0 Q2.D Q1.D Q0.D D Q Q0.D Q0 CLK !Q s0 0 0 0 0 0 1 s1 0 0 1 0 1 0 s2 0 1 0 0 1 1 s3 0 1 1 1 0 0 s4 1 0 0 1 0 1 s5 1 0 1 1 1 0 s6 1 1 0 1 1 1 s7 1 1 1 0 0 0 D Q Q1.D Q1 CLK !Q D Q Q2.D Q2 CLK !Q Recall Divide-by-8 Counter Use Q2, Q1, Q0 as inputs to a combinational circuit to produce an arbitrary waveform.

  3. Q1 Q0 1 1 00 01 11 10 Q2 0 1 1 1 1 1 0 0 0 1 0 1 1 1 0 0 0 1 0 1 Example (See Exercise 7.10) State Q2 Q1 Q0 Q2.D Q1.D Q0.D y s0 0 0 0 0 0 1 1 s1 0 0 1 0 1 0 1 s2 0 1 0 0 1 1 0 s3 0 1 1 1 0 0 0 s4 1 0 0 1 0 1 0 s5 1 0 1 1 1 0 1 s6 1 1 0 1 1 1 0 s7 1 1 1 0 0 0 1 y = !Q2 & !Q1 # Q2 & Q0

  4. “ Inputs: PB PIN 10; “Clock “ Outputs: Q2..Q0 PIN 37,36,35 ISTYPE 'reg buffer'; " LED 6..8 Q = [Q2..Q0]; " 3-bit output vector Y PIN 44 ISTYPE ‘com’; “LED 1 EQUATIONS q0.d = !q0; q1.d = !q1 & q0 # q1 & !q0; q2.d = !q2 & q1 & q0 # q2 & !q1 # q2 & !q0; y = !q2 & !q1 # q2 & q0;

  5. ORDER: clock,%2,q0,%2,q1,%2,q2,%2,y; VECTORS: C LLLH C HLLH C LHLL C HHLL C LLHL C HLHH C LHHL C HHHH C LLLH C HLLH C LHLL C HHLL C LLHL C HLHH C LHHL C HHHH CUPL Simulation File

  6. CUPL Simulation Output File

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