OR1200 Vector Processor Design And Application In MPEG-4

With the boosting in information area,multimedia technology has been rapidly adopted in our daily life and been an important part of people's life. At the same time, large amount of data and rapid processing speed of mulimedia demand for a new-type multimedia embeded processor. The processor must offers low cost,high performance, effective capability of multimedia information processing and a strong capability of communicating with network and other equipments. Therefore, the research on the proceesor for multimedia is very important both on theory and application.By comparing each kind of media processor architectures and considering the compromise between cost and performance, the single core processor architecture is adapted in our design based on opencode processor core.Vector technology has been used in many high-end general microprocessor, and archieves good performances in many applications, such as multimedia applications. Apply vector technology in embeded microprocessor could improve its performance in multimedia applications. But the vector procesor can not be found in the main stream opencode processors.According to the requirements of MPEG-4 applications, each kind of opencode processor are compared and presents vector extending processors in this paper for MPEG-4 coding , based on OR1200 and using the single core processor architecture. Based on OR1200 processor, scalar processor's extending to vector media processing is analyzed and the realization of every part is discussed in this paper. Correlative multimedia algorithms are also compared and the DCT unit of NEDA is realized in this paper. Finally, the full RTL verilog code of OR1200 vector proceesor has been given and verified on modelsim.On the whole, OR1200 vector proceesor using the single core processor architecture, not only has good multimedia proceesing capacity but also can make effective use of processor hardware resource based on mix-execution. And it is fit for MPEG-4 coding application of embeded processor because of its low cost, low power and high performance.