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[Author] Jeong-Min KIM(1hit)

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  • A High-Performance Videophone Chip with Dual Multimedia VLIW Processor Cores

    Jeong-Min KIM  Yun-Su SHIN  In-Gu HWANG  Kwang-Sun LEE  Sang-Il HAN  Sang-Gyu PARK  Soo-Ik CHAE  

     
    PAPER

      Vol:
    E84-C No:2
      Page(s):
    183-192

    A chip is described that integrates two multimedia VLIW processor cores with a hardware streaming engine. It can implement a real-time videophone, or an MPEG4 codec. Each processor core has identical resources, and shares the memory and system I/O interface units. With its symmetric structure, applications can be executed on either processor without constraints. To accelerate multimedia-specific applications, the architecture of this processor has several features. It merges the features of a RISC and a DSP, its instruction set is extended to accelerate both video and audio applications, and it supports an efficient embedded memory system, to reduce both the bandwidth and the latency for multimedia applications needing frequent memory accesses. The chip size will be 100 mm2 die that contains 700 K logic gates, 60 KB RAM, and 16 KB ROM, in a 0.25-µm CMOS standard cell technology. At 65 MHz operating frequency, it can process H.263 video coding at CIF 15 frames/sec, and G.723.1 audio coding with an 80% processing time allocation.