For successful SoC design, efficient and scalable communication architecture is crucial. Some bus interconnects now provide configurable structures to meet this requirement of an SoC design. Furthermore, bus IP vendors provide software tools that automatically generate RTL codes of a bus once its designer configures it. Configurability, however, imposes more challenges upon designers because complexity involved in optimization increases exponentially as the number of parameters grows. In this paper, we present a novel approach with which effort requirement can be dramatically reduced. An automated optimization tool we developed is used and it exploits a genetic algorithm for fast design exploration. This paper shows that the time for the optimizing task can be reduced by more than 90% when the tool is used and, more significantly the task can be done without an expert?s hand while ending up with a better solution.