低延时SpaceFibre路由器设计

Design of low-latency router for SpaceFibre

针对SpaceFibre星载数据网络中超高速数据交换的应用需求,提出低延时可重构SpaceFibre路由器设计方案。采用多模式包头识别状态机,支持完整的路由器功能;利用并行映射,降低映射延时;通过可重构混合机制仲裁器,提高仲裁方式的灵活性,缩短仲裁延时。在型号为XC7Z100FFG900-2的FPGA上对该方案进行实现,实验结果表明,该路由器功能完备,最大工作频率为240.96MHz,占用寄存器和查找表资源分别为0.5%和2.02%。

For the exchange of ultra-high-speed data in SpaceFibre network,a design of the low-latency reconfigurable router of SpaceFibre was presented.The parallel mapping was used to reduce the delay of the mapping.A header recognition FSM with multi modes was applied for the functional completeness.Through the reconfigurable hybrid arbiter,the flexibility of the arbitration was increased and the delay of arbitration was reduced.The proposed router was implemented on the XC7Z100FFG900-2.Experimental results show that the design can realize the full functions of the router,the highest frequency is 240.96MHz,and the occupied resources of register and look-up table are 0.5% and 2.02%respectively.