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    • 7. 发明授权
    • Reconfigurable interrupt device and method
    • 可重构中断设备和方法
    • US5519345A
    • 1996-05-21
    • US378920
    • 1995-01-26
    • Robert FarrellHimanshu SanghaviAshish Pandya
    • Robert FarrellHimanshu SanghaviAshish Pandya
    • H03K5/135H03K19/0175H03K19/20
    • H03K5/135
    • Reconfigurable interrupt circuitry may provide differing interrupt output signals to various interrupt receiving devices which are adapted to be driven by interrupt circuits having differing drive characteristics. Control signals representative of the device characteristics of the interrupt receiving device are applied to the reconfigurable interrupt circuitry and output characteristics of the reconfigurable interrupt circuitry are selected according to the control signals. In this manner the reconfigurable interrupt circuitry may by adapted to drive interrupt receiving devices which are compatible with active high interrupt output, active low interrupt output, open drain interrupt output, totem pole interrupt output, tristate interrupt output and non tristate interrupt output. The selected configuration of the reconfigurable interrupt circuitry is determined by writing to registers which may be placed within the memory space of external devices so that the external devices may configure the interrupt according to their own characteristics.
    • 可重配置中断电路可以向适合于由具有不同驱动特性的中断电路驱动的各种中断接收装置提供不同的中断输出信号。 代表中断接收装置的装置特性的控制信号被应用于可重构中断电路,并根据控制信号选择可重构中断电路的输出特性。 以这种方式,可重构中断电路可以适用于驱动与高电平有效中断输出,低电平有效中断输出,开漏中断输出,图腾柱中断输出,三态中断输出和非三态中断输出兼容的中断接收器件。 通过写入可以放置在外部设备的存储器空间内的寄存器来确定可重配置中断电路的所选配置,使得外部设备可以根据其自己的特性来配置中断。