A New Bus Assignment Algorithm for a Shared Bus Switch Fabric

[摘要] An architecture for a Cell Switch Fabric (CSF) with anew bus assignment strategyispresented. The proposed architecture has a modular structure with achip partitioningoriented to avoid the system from falling down totally, thus achieving expandability andincreasing reusability. A discussion about different algorithms for the bus assignmentis given. The shared bus is assigned in acyclic and rotative way, switching microcellsinstead of cells. The CSF is built in four PCBs where every one has a capacity for fourports at 164.323 Mbps, the external port rate is 155.52 Mbps. A microcontroller realizessome tests and communicates with a PC, which runs a test, verification and CSFconfiguration program. Some parameters about the CSF behavior are measured too.Each Port was implemented on a CPLD FLEX10K100 and the Switch Control Blockon a circuit MAX7128, both from Altera Company.

[学科分类] 电子、光学、磁材料