基于FPGA的數(shù)字音頻光端機和數(shù)字電視傳送流接口卡設(shè)計
[Abstract]:With the rapid development of computer technology, storage technology and communication technology, the task of signal acquisition, processing and transmission is becoming more and more serious. At the same time, more and more attention has been paid to the research of high-speed data acquisition system. On the other hand, with the development of EDA technology, the use of FPGA becomes more and more common. FPGA itself has the advantages of high clock frequency, small delay, reusable and so on. In the development process, Verilog HDL language or VHDL language can be used to describe its internal logic circuit. IP nuclear technology can also be used to speed up the development process and shorten the development cycle. Therefore, using FPGA in high speed data acquisition system will greatly improve the flexibility and stability of the system. This paper presents a design scheme of digital audio optical terminal based on FPGA and a digital TV transfer stream interface card based on FPGA. The digital audio optical terminal based on FPGA includes optical near end machine and optical remote machine. Its function is to realize the transmission of digital audio signal in optical fiber. The digital signal processing part of digital audio optical terminal is implemented with FPGA. The logic design includes 12s interface design and optical fiber interface design. The optical fiber interface logic is realized by Altera soft core. The function of digital TV transport stream interface card based on FPGA is to realize the real-time transmission of digital TV transport stream. Interface card design includes two parts: hardware design and software design. Hardware design includes PCI-E interface design, DDR2 SDRAM buffer design and ASI interface design, in which PCI-E interface is implemented by Altera's PCI-E IP hard core, software design includes driver design and application program design. The driver is developed with WindRiver of Jungo Company. Finally, the digital audio optical terminal and the digital TV transfer stream interface card are tested and analyzed. The results show that the performance of the two devices is stable, the digital audio optical terminal realizes the communication of the digital audio signal in the optical fiber, and the digital TV transport stream interface card realizes the high-speed and accurate transmission of the transmission stream.
【學(xué)位授予單位】:天津大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TN949.197;TN791
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