This paper presents the proposal and implementation of a 4x4 reconfigurable crossbar switch (RCS) architecture for network processors. Its main purpose is to increase the performance, and flexibility for environments with multiprocessors and computer clusters. In this paper we show the result of simple 4x4 crossbar switch .The results include VHDL simulation of RCS on Modelsim software and the use of it in a broadcast function implementation, found in message passing support middleware. This reconfigurable crossbar Switch used in Network Processor to connect the various circuits which are used to perform the various task.

1. D. E. Comer, “Network Systems Design using Network Processors”, Prentice Hall, 2003
2. D. Kim, K. Lee, S. Lee and H. Yoo, “A Reconfigurable Crossbar Switch with Adaptive Bandwidth Control for Networks-on-Chip”, IEEE International Symposium on Circuits and Systems, 2005
3. G. Lawton, “Will Network Processor Units Live up to Their Promise?”, IEEE Computer, Volume 37, Number 4, April, 2004,
4. I. A. Troxel, A. D. George and S. Oral, “Design and Analysis of a Dynamically Reconfigurable Network Processor”, IEEE Conference on Local Computer Networks, November 6-8, 2002
5. J. Chang, S. Ravi, and A. Raghunathan, “FLEXBAR: A crossbar switching fabric with improved performance and utilization”, IEEE Custom Integrated Circuits Conference, May 2002,
6. L.E.S. Ramos and C.A.P.S. Martins, “A Proposal of Reconfigurable MPI Collective Communication Functions”. Third International Symposium on Parallel and Distributed Processing and Applications, LNCS 3758, Nanjing, China, November 2-5, 2005
7. S. Young, et al., “A High I/O Reconfigurable Crossbar Switch”, 11th Annual IEEE Symposium on Field-Programmable Custom Computing Machines, Napa, California, April.

Network Processor FPGA Model sim