This Article 
   
 Share 
   
 Bibliographic References 
   
 Add to: 
 
Digg
Furl
Spurl
Blink
Simpy
Google
Del.icio.us
Y!MyWeb
 
 Search 
   
Analysis and Synthesis of Asynchronous Sequential Networks Using Edge-Sensitive Flip-Flops
August 1971 (vol. 20 no. 8)
pp. 847-855
Standard flow table methods for analysis and synthesis of asynchronous sequential switching networks are difficult to apply when edge-sensitive flip-flops are used. Use of a differential mode (DM) state table, which specifies the next state as a function of the present state and input change, avoids such difficulties. Difference operators, which are used to specify changes in logic variables, provide a convenient means for defining terminal behavior of edge-sensitive flip-flops. The inhibited toggle flip-flop is introduced as a general-purpose edge-sensitive flip-flop. Sequential networks are analyzed by writing difference operator equations from which a DM table can be constructed. Synthesis of asynchronous networks is accomplished by first constructing a DM table to describe the desired network and then deriving input equations for inhibited-toggle flips-flops. Such realizations are free of hazards and critical races and usually require fewer gates and flip-flops than solutions by standard flow table methods.
Index Terms:
Asynchronous sequential networks, critical races, difference operators, differential mode tables, edge-sensitive flip-flops, inhibited-toggle flip-flops.
Citation:
J.R. Smith, C.H. Roth, "Analysis and Synthesis of Asynchronous Sequential Networks Using Edge-Sensitive Flip-Flops," IEEE Transactions on Computers, vol. 20, no. 8, pp. 847-855, Aug. 1971, doi:10.1109/T-C.1971.223360
Usage of this product signifies your acceptance of the Terms of Use.