Open AccessSemi‐modular delay model revisited in context of relative timing
Author(s) -
Park Hoon,
He Anping,
Roncken Marly,
Song Xiaoyu
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2014.3666
Subject(s) - modularity (biology) , modular design , set (abstract data type) , context (archaeology) , computer science , hazard , theoretical computer science , programming language , paleontology , chemistry , genetics , organic chemistry , biology
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.