| With the development of modern communication technology,communication systems are developing in a higher speed and more complex direction,which puts forward higher requirements for high-speed protocol conversion systems between data transmission devices.This paper takes the ground simulation test system of satellite communication as the background,studies the design and implementation of FPGA-based high-speed protocol conversion system,and implements high-speed data processing and protocol conversion between multiple data exchange devices.First of all,according to the function and requirements of the system,the overall design of the hardware circuit part and the design of the peripheral interface circuit are carried out.In this paper,according to the design requirements,the Ethernet physical layer interface circuit is designed to realize the transmission and reception of five-way Ethernet data;the interface circuit design of the high-speed serial transceiver realizes the transmission and reception of two synchronous dedicated link data;in addition,the The design of the lowvoltage differential signal interface circuit realizes the data exchange of control data and flow control data.Secondly,based on the hardware design,the overall design of the software logic and the detailed design and implementation of each module are carried out.According to the design rate requirements,a high-speed parallel logic processing structure was designed to achieve high-speed data processing on the basis of low-performance hardware;for interface data exchange,interface control logic was designed to achieve five Ethernet data and two synchronous dedicated link data Send and receive;for protocol conversion logic,a configurable table lookup algorithm is designed to achieve two-way conversion of two data protocols;in addition,this article simulates the logic processing part to verify the correctness of the design function.Finally,use a network tester and online debugging tools to verify the system.Through the online debugging tool,the system configuration and protocol conversion logic are tested on the board to complete the system configurable protocol conversion function verification;through the multi-channel Ethernet data transmission and reception test at different rates of the system,the system design rate verification is completed.Verification results show that this paper achieves high-speed protocol conversion between Ethernet data and synchronous dedicated link data,which meets the design requirements of the system. |
