Title :
Semi-modular delay model revisited in context of relative timing
Author :
Hoon Park ; Anping He ; Roncken, M. ; Xiaoyu Song
Author_Institution :
ECE Dept., Portland State Univ., Portland, OR, USA
Abstract :
A new definition of semi-modularity to accommodate relative timing constraints in self-timed circuits is presented. While previous definitions ignore such constraints, the new definition takes them into account. The difference on a design solution for a well-known speed-independent circuit implementation of the Muller C element and a set of relative timing constraints that renders the implementation hazard free is illustrated. The old definition produces a false semi-modularity conflict that cannot exist due to the set of imposed constraints. The new definition correctly accepts the solution.
Keywords :
delay circuits; logic circuits; logic design; Muller C element; relative timing constraints; self-timed circuits; semimodular delay model; speed-independent circuit implementation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.3666