It is not easy to point out Hazards and Deadlock in a circuit with a complex structure.
Determination methods for Hazard, Race, Deadlock in [1-3] cannot be applied to this case. With
complex circuit structure, specific solution must be offered for each circuit type such as solution of
synchonization for asynchronous circuits [4]. GALS circuit is a complex circuit system; thus, the
above-mentioned solution is also applied to this circuit
