Method and apparatus executing power on self test code to enable a wakeup device for a computer system responsive to detecting an AC power source
    3.
    发明授权
    Method and apparatus executing power on self test code to enable a wakeup device for a computer system responsive to detecting an AC power source 失效
    执行对自检代码通电的方法和装置,以响应于检测到AC电源来启用用于计算机系统的唤醒装置

    公开(公告)号:US06760850B1

    公开(公告)日:2004-07-06

    申请号:US09628739

    申请日:2000-07-31

    IPC分类号: G06F126

    摘要: A computer system that selectively disables power to wake on LAN (WOL) devices in the absence of AC power. In one embodiment, the computer system comprises a power supply and a power management controller. The power supply is configured to provide power to a wakeup device. The power management controller receives an AC voltage sense signal that indicates the presence or absence of an AC power source and enables the power supply to provide power to the wakeup device when the AC voltage sense signal is asserted. The power management controller preferably disables the power supply when the AC voltage sense signal is de-asserted. The computer system may operate in several states including an off state, a power on self test (POST) state, a working state, a trap state, and an armed state.

    摘要翻译: 在没有交流电源的情况下,选择性地禁用LAN(WOL)设备唤醒电源的计算机系统。 在一个实施例中,计算机系统包括电源和电源管理控制器。 电源配置为向唤醒设备提供电源。 功率管理控制器接收AC电压检测信号,该AC电压检测信号指示AC电源的存在或不存在,并且当AC电压检测信号被断言时使电源能够向唤醒装置提供电力。 当AC电压检测信号被取消断言时,电源管理控制器优选地禁用电源。 计算机系统可以在包括关闭状态,上电自检(POST)状态,工作状态,陷阱状态和布防状态的若干状态下操作。