Design And Implementation Of TLK2711 High Speed Protocol Conversion Ground Insepection System Based On FPGA

On-board switching technology can greatly improve the efficiency and quality of satellite communication.On-board switching equipment ground inspection system is a key system for the expansion and application of on-board switching technology.Based on the ground test of on-board switching equipment,this thesis studies the TLK2711 high-speed protocol conversion ground inspection system based on Field Programmable Gate Array(FPGA),which simulates the inter-satellite link signal source and realizes the connection with on-board switching equipment.data communication.First of all,combined with the function and performance requirements of a certain type of satellite payload high-speed label switching system corresponding to the ground inspection equipment,the overall design of hardware circuit and peripheral interface circuit are designed.According to the design requirements,the Ethernet interface circuit is designed,through the Gigabit media independent interface(GMII)and the port physical layer(PHY)chip connection,to achieve five channel Ethernet data transceiver;The TLK2711 high-speed interface circuit is designed to realize one channel dedicated link data receiving and transmitting;The configuration interface circuit is designed to realize the configuration of flow control data and label data;The flow control interface circuit is designed to send the flow control data.Secondly,based on the hardware circuit design,the overall design of the software logic of the ground inspection system and the detailed design and implementation of each module are carried out.According to the interface design requirements,the Ethernet interface and TLK2711 high-speed interface logic are designed to receive and send five channel Ethernet data and one channel dedicated link data;According to the protocol conversion logic,the flexible label configuration function is designed to realize the high-speed conversion between Ethernet protocol and dedicated link protocol;According to the flow control requirements of on-board switching equipment,the flow control logic is designed to realize multi-level flow control;In addition,the system interface logic and protocol conversion logic are simulated to verify the correctness of the system logic design.Finally,the system was verified by network tester and online debugging tool chipscope.The system logic was tested on the board,and the protocol conversion function verification of the flexible label configuration of the ground inspection system was completed;Through the test of five channel Ethernet data transceiver under different rates,the rate verification of the ground inspection system is completed;The results show that the label configuration function of the system is flexible,and the total processing rate is no less than 1.8Gbps.The high-speed protocol conversion from Ethernet protocol to dedicated link protocol is realized,which meets the design requirements of the system.