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    • 48. 发明授权
    • Terminal apparatus
    • 终端设备
    • US08090398B2
    • 2012-01-03
    • US12112968
    • 2008-04-30
    • Tetsuya NakagawaYuji HatanoYasuhiro SagesakaToru BajiKoki Noguchi
    • Tetsuya NakagawaYuji HatanoYasuhiro SagesakaToru BajiKoki Noguchi
    • H04M1/00
    • G06F9/3885G06F1/3203G06F15/7807
    • A low cost, a low power consumption and a small size are three very important factors for a mobile communication terminal. A great problem is posed by the conventional technique using a DSP and a CPU independent of each other which requires two external memory systems. Also, two peripheral units are required for data input and output of the DSP and CPU. As a result, an extraneous communication overhead occurs between the DSP and the CPU. The invention realizes a mobile communication terminal system by a DSP/CPU integrated chip comprising a DSP/CPU core (500) integrated as a single bus master, an integrated external bus interface (606) and an integrated peripheral circuit interface. The memory systems and the peripheral circuits of the DSP and the CPU can thus be integrated to realize a mobile communication terminal system low in cost and power consumption and small in size.
    • 低成本,低功耗和小尺寸是移动通信终端的三个非常重要的因素。 使用DSP和独立于彼此的CPU的传统技术提出了一个很大的问题,需要两个外部存储器系统。 此外,DSP和CPU的数据输入和输出需要两个外设单元。 因此,DSP和CPU之间会发生无关的通信开销。 本发明通过DSP / CPU集成芯片实现移动通信终端系统,其包括集成为单总线主机的DSP / CPU核心(500),集成外部总线接口(606)和集成外围电路接口。 因此,DSP和CPU的存储器系统和外围电路可以被集成以实现低成本和功耗以及体积小的移动通信终端系统。