Mesh-star Hybrid NoC architecture with CDMA switch

• Published in: 2009 IEEE International Symposium on Circuits and Systems (ISCAS) pp. 1349 - 1352
• Main Authors: Woojoon Lee, Sobelman, G.E.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.05.2009
• Subjects: CMOS technology; Computer architecture; Mesh networks; Multiaccess communication; Network topology; Network-on-a-chip; Routing; Switches; System recovery; Telecommunication traffic
• ISBN: 1424438276; 9781424438273
• ISSN: 0271-4302
• DOI: 10.1109/ISCAS.2009.5118014

The network-on-chip (NoC) concept has been proposed to replace conventional bus-based system architectures to create scalable and flexible future SoC designs. A 2D-mesh topology is one of the most frequently mentioned topologies for an NoC design due to its natural layout mapping onto an SoC. However, the 2D-mesh topology NoC has a hot-spot problem at the center of the network and presents difficulties in multicasting. In this paper, we propose a novel multicastable CDMA switch and an efficient mesh-star hybrid topology. This approach leads to reduced traffic at the center of the network and better performance with multicasting. Our switch has been synthesized using a 0.13 mum CMOS technology library.