The architecture of the SoC becomes even complex as the silicon manufacture process evolves. Huge computation demands lead to development of the multi-core architecture inside the SoC system. The massive data exchange traffics between the cores make the bus topology of the multi-core system the main performance concern of the whole. The solo computation capability of the individual core does not promise the overall performance of the SoC system. Communication dominated execution turn out to be the most crucial factor in this area.