ECE251 hw10

ECE251 hw10 - (a) The machine is in ABxy =1100 and A...

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NEW JERSEY INSTITUTE OF TECHNOLOGY ACADEMIC YEAR 2010-2011 SEMESTER 1 ECE251 DIGITAL DESIGN HW 10 1. Show the minimized state table of a sequential circuit, whose un-minimized version is: PS NS x = 0 x =1 A A,0 B,0 B B,0 C,0 C C,0 D,0 D D,0 A,1 E E,0 F,0 F B,0 G,0 G G,0 H,0 H D,0 E,1 2. Implement the minimal state machine you received in Pb. 1 using SRFFs and 2-input gates. 3. Given the flow table, in Fig. 1, of an asynchronous circuit with 2 inputs A and B , and 2 outputs X and Y . 00 01 11 00 01 10 10 11 AB xy 00 01 10 11 Fig. 1. Flow table for Pbs. 3 & 4 10 00 00 01 01 11 11 10 00 00 10 10 XY 1
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Determine the stable states of this circuit. 4. Given an asynchronous machine whose flow table is shown in Fig. 1. What happens when
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Unformatted text preview: (a) The machine is in ABxy =1100 and A changes to 0? (b) The machine is in ABxy =1100 and B changes to 0? (c) The machine is in ABxy =1001 and B changes to 1? (d) The machine is in ABxy =1001 and A changes to 0? (e) The machine is in ABxy =0010 and B changes to 1? 5. Given the circuit of Fig.2: 1 w 2 w 1 y 2 y 1 Z 2 Z Fig. 2 Circuit for Pb. 5 (a) Derive the excitation table. (b) Determine the stable states. Are there any critical or non-critical races in the operation of this machine? (c) Are there any oscillations in the operation of this machine? 2...
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ECE251 hw10 - (a) The machine is in ABxy =1100 and A...

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