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随着高清影音时代的到来,新的高清多媒体接口技术也渐趋成熟。本文研究了高清多媒体接口的编码和解码功能,并采用硬件描述语言实现高清多媒体接口规范定义的编解码功能。首先对高清多媒体接口的整体信道传输过程进行了分析和分解,并阐述了三个数据周期传输时间及其解码方式的不同。在此基础上对编解码功能进行了模块划分,采用分层及模块复用至顶向下的设计方法。最后通过NC-Verilog仿真工具仿真验证代码功能的正确性。
With the advent of high-definition video and audio era, the new high-definition multimedia interface technology has matured. This paper studies the coding and decoding functions of high definition multimedia interface and implements the coding and decoding functions defined by the definition of multimedia interface (HD) in hardware description language. First of all, it analyzes and decomposes the whole channel transmission process of HD multimedia interface, and expounds the difference between the three data transmission periods and the decoding method. On this basis, the coding and decoding functions are divided into modules, using hierarchical and module reuse top-down design. Finally, the correctness of the code function is verified by NC-Verilog simulation tool.