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Dynamic Asynchronous Adders

Dynamic Asynchronous Adders. Wei-Che Lin Rattanasonti Hwanjit Professor Dr. David W. Parent 4/4/2003. Outline. Asynchronous & synchronous Full dynamic Manchester adder & Ripple Carry Adder Muller C-element Done block Conclusion. Objective. High performance Low power dissipation Fast.

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Dynamic Asynchronous Adders

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  1. Dynamic Asynchronous Adders Wei-Che Lin Rattanasonti Hwanjit Professor Dr. David W. Parent 4/4/2003

  2. Outline • Asynchronous & synchronous • Full dynamic • Manchester adder & Ripple Carry Adder • Muller C-element • Done block • Conclusion

  3. Objective • High performance • Low power dissipation • Fast

  4. Proposed Work • Dynamic logic • Asynchronous logic • Implementation of dynamic and asynchronous logic

  5. Self-timed Pipelines C-El C-El C-El Done? Done? P/E P/E P/E F1 F2 F3

  6. Done Block Circuit

  7. Done Block Circuit

  8. Global Done Circuitfor 16-bit adder Comp1 N Comp2 P Comp3 N Comp4 P N GCo N-cell P-cell GCo C16 C16 Comp17

  9. Muller C-Element A B Y 0 0 0 0 1 Fx 1 0 Fx 1 1 1

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