Lec4.643 - b X-Push button to initiate the cycle b Y 4...

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1 EECE 643 Computer-Aided Circuit Engineering - An eight-bit register with asynchronous clear - A four-bit shift register - Design an ALU (74381)
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2 - Design Example - Washing Machine Controller 1. Requirements White Colors Wash Cycle Hot Cold Rinse Cycle Hot Cold - Totally 5 states: Reset, Fill, Wash, Rinse, Spin. - Reset (Ready) - Fill (20 seconds) Ts - Wash (30 seconds) Tw - Spin (20 seconds) Ts - Fill (20 seconds) Ts - Rinse (30 seconds) Tw - Spin (20 seconds) Ts 2. Block Diagram
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3 3. User Inputs - Switch to select whites or colors
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Unformatted text preview: b X -Push button to initiate the cycle b Y 4. System Outputs (Use LEDs to signal each state) 1) Washing machine is ready to start (Rdy) 2) Wash/Rinse cycle (W/R) 3) Cold Fill (CF) 4) Hot Fill (HF) 5) Agitate (AG) 6) Spin (SP) 5. State Assignments 1) Ready S0 000 2) Set wr = 0 S1 001 3) Hot Fill S2 010 4) Cold Fill S3 011 5) Agitate S4 100 6) Spin S5 101 7) Set wr = 1 S6 110 6. Algorithmic State Machine 7. State Graph 8. State Table 9. VHDL Programming 4 5 6 7 8 9...
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