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    • 4. 发明专利
    • Semiconductor integrated circuit
    • 半导体集成电路
    • JP2006004339A
    • 2006-01-05
    • JP2004182468
    • 2004-06-21
    • Fujitsu Ltd富士通株式会社
    • YOMO TAKASHI
    • G06F1/30G06F1/24G06F1/32G06F11/14G06F15/78
    • G06F1/3203G06F1/24G06F1/305G06F11/1407
    • PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit capable of evacuating and restoring easily and quickly various register values, when realizing the standing-by condition where an internal operation voltage is interrupted, the condition where the internal operation voltage is lowered, or the like. SOLUTION: This semiconductor integrated circuit includes a CPU core part, an on-chip bus connected to the CPU core part, an in-chip memory connected directly to the on-chip bus, and a voltage control part for controlling an electric power source voltage for operating the CPU core part and for outputting a boot switching signal. When the CPU core part fetches a boot program command from a boot address, the on-chip bus switches the boot address between the memory and a device other than the memory, in response to a condition of the boot switching signal. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供能够容易且快速地排除和恢复各种寄存器值的半导体集成电路,当实现内部工作电压中断的待机状态时,内部工作电压降低的状态 ,等等。 解决方案:该半导体集成电路包括CPU核心部分,连接到CPU核心部分的片上总线,直接连接到片上总线的片上存储器和用于控制电路的电压控制部分 用于操作CPU核心部分并输出引导切换信号的电源电压。 当CPU核心部分从启动地址获取引导程序命令时,片上总线响应于引导切换信号的状况,将存储器和除存储器之外的器件的引导地址切换。 版权所有(C)2006,JPO&NCIPI