基于TMS320DM642的硬件平台设计微电子学与固体电子学专业论文.docxVIP

Abstract With the development of information technology, video technology has been widely applied in daily life, including industry, medical military and so on. There are a lot of differences among the video processing platforms because of different application fields and function. So developing a universal video processing platform and doing further development on it according to various requirements has become a significant way of video processing platform design.The TMS320DM642 is considered to be a Digital Media Processor with excellent performance at present, it is a 32-bit fixed-point DSP which is developed for multimedia applications.It meets the demand of video processing with its good processing performance and abundant on-chip peripherals.So TMS320DM642 has become one of the perfect platforms for the video processing system currently. This paper studies the development and implementation of the video processing system, and focuses on the hardware design based on TMS320DM642. The DSP chip works as the core processor at high speed, FPGA works as the coprocessor. FPGA handles video and audio signals, including timing alignment, interface circuits and some of the hardware codec, DSP chip processes other algorithms. In the paper, the detailed design of the external circuit for the DSP hardware is completed, and the system programming for TMS320DM642, including on-chip peripherals configuration, system initialization, EMIFA control register configuration, IIC module configuration and EDMA control register configuration is writen. The configuration and verification of internal registers for the video encoding chips is implemented through the IIC interface. Finally, the master mode of the SPI bus interface is realized based on the FPGA. This system provides an audio and video input, as well as a high-performance hardware platform for audio and video codec algorithm’s verification. Keywords media processor, TMS320DM6