PRLE Based T - OCI Crossbar for On-Chip Communication

One of the most important factor which affects the performance of system on chips are on chip interconnects. The most suitable interconnection method which is capable of addressing several high performance applications are Network on Chip. The widely used method to implement on-chip crossbars are Code Division Multiple Access (CDMA). Overloaded CDMA is used to intensify the capacity of the CDMA based Network on Chip and to overcome the problems due to Multiple Access Interference (MAI). In this paper, to reduce the excess area needed to store the message data and to provide security, a parallel compare and compress technique is used to the T - OCI crossbar. The Walsh spreading codes has a property that enables adding more number of non orthogonal spreading codes which increases the capacity of CDMA bus. Codec is the key component of the PaCC architecture, which effectively balances the area and performance. The Parallel Run Length Encoding (PRLE) scheme observes q bit in parallel. The results show that the PRLE based T - OCI attains greater bus capacity, less power consumption and efficient in area when compared with the conventional CDMA bus.