Asynchronus High-speed Data Multiplexer

In this paper, the background task of the project needs input to CCSDS (Consultative Committee for Space Data Systems) to develop a spatial data system standardized communications architecture, communications protocols and services as a reference, high-speed asynchronous data multiplexer prototype development projects. Focus on asynchronous high-speed data multiplexer of the key technologies that virtual channel scheduling strategy simulation, obtain virtual channel scheduling of a number of important parameters, and in accordance with the parameters obtained reasonable and optimal design of the virtual channel scheduling strategy, as an engineering prototype scheduling program.In this paper, the background rate of projects proposed by eight different data input bit stream data, the establishment of a high-speed asynchronous data multiplexer principles model, the model describes the function of each unit. Asynchronous high-speed data multiplexer to the functional and timing simulation, the output waveforms by analyzing the feasibility of the model.Finally completed the asynchronous high-speed data multiplexer FPGA software design and hardware design, debugging, testing, experimental results show that the high-speed asynchronous data multiplexer can correctly eight asynchronous high-speed data multiplexing, data format standards meet the CCSDS AOS, complex then design consistent with the theoretical results. It also verified the asynchronous re-took the high bit rate virtual channel scheduling strategy, scheduling scheme that is reasonable, with the engineering feasibility. The success of the project prototype development, to provide a reference for subsequent space mission, space mission to accelerate the development process of the follow-up.