"CoreConnect" and "AMBA" are the two prominent bus architectures used in System on Chip designs. These architectures define technology independent standard bus protocol methodologies for easy integration of IPs within a System on Chip design. "CoreCOnnect" is mainly developed by IBM and integral part of PowerPC processor based System on Chip designs.CoreConnect bus architecture has three parts:1. PLB: Processor Local Bus2. OPB: On chip Peripheral Bus3.