Design Of Embedded Multimedia Player Based On FPGA

With the continuous development of micro-electronics and unceasing improvement of FPGA(Field Programmable Gate Array) technology, SOPC(System On a Programmable Chip) technique has gradually become the new development direction of embedded system.The study of the subject is as following: According to the analysis of embedded system design, a low-cost embedded multimedia system based on SOPC were designed, which contains the following functions: digital picture storage, digital picture viewing and playing, music playing, e-book, digital picture network transmission. Firstly, the software including initialization and reading/writing is developed on Nios II platform, and FatFs file system is ported to Nios II soft-core processor. Acknowledge of file system is introduced, and together with API function, file operation is prepared for later design. Secondly, the dirver of LCD is designed,μC/GUI is ported. Graphical user interface and display can be easily completed. In the end, audio decoding chip which realizes music playing is configured through Verilog HDL, and JPEG decoding is used before picture playing. A typical embedded networking system is used to transmiss picture, which contain TCP/IP Stack andμC/OS-II.Comparing to traditional embedded system, the SOPC of this thesis has greatly economized research time, decreased number of chip, and improved the reliability of the system. It is easy to realize, upgrade and transplant the system. The system has strong adaptability and good extensibility.