Design And Implementation Of Reflective Memory Card Based On FPGA

In modern network systems,there are some real-time demanding applications.Simulation system such as aircraft,naval ships submarine test systems,nuclear power plant,engine test platform,in these systems,data transmission requires high-speed real-time,and general Ethernet network cannot meet the requirements.Reflective Memory Network is a high-speed real-time network,which allows the use of different bus structures and different operating systems to determine the rate of real-time data sharing and is compatible with various operating systems.Reflective Memory networks are installed on each computer is actually a reflective memory card connected via optical fiber ring or star structure.In the traditional reflective memory card there aer two data buffers,send and receive buffers.When a node receives the network data sent from other nodes,the first need to parse the data packet format,when the judge is not issued to the data of the node,then remove the header,simply write data to the receive buffer,and then Package sent to other nodes.This operation has undoubtedly increased the delay of data within the nodes.This paper proposes a new method,the data forwarded within the node,does not require the receive buffer,after the judge sent directly to the next header to node,to reduce data latency in the network,and more with real-time.The new structure can reduce the data delay on the network,but also need more data buffer.This article uses the FPGA to achieve the function of reflective memory card,and test the network to multi-block memory cards for data sharing in real time.The main research work can be summarized as follows:1.The advantages of reflective memory network.Complexity,software costs,transmission rate and the elements of comparison and the difference between the Ethernet.2.Research the Reflective Memory Card new system architecture.Planning system structure reflective memory card,enabling transmission rate reaches the maximum.3.Development of reflective memory cards.FPGA chip for the master with a reflective memory card...