支持AltiVec技术的多媒体协处理单元的研究

Research on multimedia co-processor unit based on AltiVec technology

通过对嵌入式处理器进行多媒体处理能力的扩展可增强其对多媒体数据的处理能力。以32 bit龙腾嵌入式处理器为基础,研究AltiVec技术以及超标量技术,设计了该处理器中支持AltiVec技术的多媒体协处理单元。该单元采用五级流水线,将指令动态调度技术分配到不同的流水线中,在提高处理性能的同时保证了设计频率。通过多媒体基准程序测试,该单元的指令IPC为1.2,SMIC0.18μm工艺库下,频率为350 MHz,该协处理单元提高了龙腾处理器的性能。

To speed up the processing on the multimedia information, a multimedia co-processor unit can be imported into the embedded processor. The paper presented a method to implement AhiVec technology on the Longtium processor, it mainly focused on the research of the AhiVec technology, dynamic instruction scheduling and pipeline. It was demonstrated the architecture could upgrade the performance of the Longtium processor.