Ts Stream Multiplexer And Its Interface In The Fpga-based Design And Realization

In the system of Digital Vidio,MPEG-2 Multiplexer is the core of the system tranmitting. All of the program data and other service tranmite through multiplexing pack. Now only few company can predominate the technology of multiplexer. Because currently positive place the broadcast television turns a transition a period toward the numeral completely, The market potential is huge, Therefore the development and research for multiplexer is very important. This text mainly research multiplexer and its interface and design to take shape a product.In the dissertation author first analysis and research MPEG-2 standard in detail,and introduce NIOS II. Detailed analyses the part key technique of multiplexer,such as picking up and constructing PSI information PID mapping,PCR emendation and CRC check,and then Detailed analyses ASI interface and DS3 interface, give the design project, finally pass the hardware identification. In the whole design process, through the method of the function and timing emluator and hardware identification,ensure each parts to work normally,and satisfy the request of the system function. Otherwise give parts of details worked to various designs.First to reply to carry on with the whole work of machine detailed analysis, and divide the line soft hardware each from function that need to be complete.Adopt the c language carried out the PSI informationGive realization the fast PID reflect to shoot a method, and give according to the FPGA characteristics a kind of new PID reflect to shoot a method, reducing the usage of the logic resources, raising a stability.Carried out ASI to connect on the FPGA, mainly analyzed to carry out process synchronously, provide a kind of new fast carry out a synchronous method of the word stanza.Carried out DS3 to connect on the FPGA, put forward and carry out a kind of and the permit type DS3 connect a people's design.This project the biggest characteristics is to design software to carry on reasonable demarcation with the hardware design, Make the system, design more vivid, The software design and the hardware design can carry on in the meantime, raise a work efficiency largelg.The whole item design completes through verilog and c two kinds of language, adopt the FPGA chip EP1C20 of the Altera company, At the Quartus and the NIOS IDE two kinds of environment.Because this item is complete by several person, this text to oneself part of works of design study carry on an analytical research.This item still uses a little bit other related techniques, for example the numerical frequency synthesize,the network correspondence,imbed small scaled operate system etc. and do not do introduction here.