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    • 1. 发明授权
    • Interrupt controller with selectable interrupt nesting function
    • 具有可选中断嵌套功能的中断控制器
    • US5410715A
    • 1995-04-25
    • US8387
    • 1993-01-25
    • Satomi IshimotoOsamu MatsushimaMasaki NasuMasahiro Nomura
    • Satomi IshimotoOsamu MatsushimaMasaki NasuMasahiro Nomura
    • G06F13/26
    • G06F13/26
    • An interrupt controller comprises a circuit for holding information obtained by designating one priority selected from a plurality of priorities for each of a plurality of interrupt requests, and a flag for indicating whether or not a nesting is allowed for an interrupt request having at least one predetermined priority of the plurality of priorities. On the basis of the priority information held in the circuit and information held in the flag, a controller operates so that when an interrupt request is generated in the course of execution of an interrupt processing having the predetermined priority, if the flag is in a first condition, the controller acknowledges the generated interrupt request only when the priority of the generated interrupt request is higher than the predetermined priority, and if the flag is in a second condition, the controller acknowledges the generated interrupt request not only when the priority of the generated interrupt request is higher than the predetermined priority, but also when the priority of the generated interrupt request is the same as the predetermined priority.
    • 中断控制器包括一个电路,用于保存通过指定从多个中断请求中的每一个的多个优先级中选择的一个优先级获得的信息,以及用于指示是否允许具有至少一个预定的中断请求的中断请求的嵌套的标志 优先考虑多项优先事项。 基于保持在电路中的优先级信息和保持在标志中的信息,控制器操作,使得当在执行具有预定优先级的中断处理的过程中产生中断请求时,如果该标志位于第一 条件是,只有当所产生的中断请求的优先级高于预定优先级时,控制器才确认产生的中断请求,并且如果标志处于第二状态,则控制器不仅在生成的中断请求的优先级 中断请求高于预定优先级,而且当所产生的中断请求的优先级与预定优先级相同时。
    • 8. 发明授权
    • Semiconductor integrated circuit device
    • 半导体集成电路器件
    • US07659772B2
    • 2010-02-09
    • US11813502
    • 2006-01-06
    • Masahiro NomuraKoichi Takeda
    • Masahiro NomuraKoichi Takeda
    • G05F1/10
    • H03K19/0008
    • A semiconductor integrated circuit device includes: a switching current observer for observing a switching current; a leakage current observer for observing a leakage current; a comparator which compares the switching current and the leakage current with each other; a threshold voltage controller for controlling a substrate bias voltage in order to make a ratio of the switching current and the leakage current constant; a delay observer for observing a delay amount; and a power supply voltage controller for controlling a power supply voltage in order to keep the delay amount in a predetermined range. In the semiconductor integrated circuit device, a process which enables the minimization of an operation power is carried out by controlling the threshold voltage to make the ratio of the switching current and the leakage current constant at a given clock frequency and controlling the power supply voltage to guarantee the operating speed.
    • 一种半导体集成电路器件,包括:用于观察开关电流的开关电流观察器; 用于观察泄漏电流的漏电流观测器; 将开关电流和漏电流进行比较的比较器; 用于控制衬底偏置电压以使开关电流和漏电流的比率恒定的阈值电压控制器; 用于观察延迟量的延迟观察器; 以及用于控制电源电压以便将延迟量保持在预定范围内的电源电压控制器。 在半导体集成电路器件中,通过控制阈值电压来实现能够最小化操作功率的处理,以使给定时钟频率下的开关电流和漏电流的比率恒定,并将电源电压控制为 保证运行速度。