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    • 33. 发明授权
    • Efficient low power exit sequence for peripheral devices
    • 外围设备的低功耗退出顺序
    • US09116694B2
    • 2015-08-25
    • US13627779
    • 2012-09-26
    • Intel Corporation
    • Eng Hun Ooi
    • G06F1/32
    • G06F1/3206G06F1/325G06F1/3268Y02D10/154Y02D50/20
    • Embodiments of the invention describe methods, apparatuses and systems for providing an efficient low power exit sequence for peripheral devices. In embodiments of the invention, a signal from a host device is transmitted to a SATA peripheral device for exiting a low-power state. An initialization time for OOB transmission and reception logic of the SATA peripheral device is tracked, and a reference time value based on the tracked initialization time is stored. In subsequent transitions from said low-power state, the reference time value for waking a host physical layer is utilized, thereby improving the efficiency of the management and use of said low power state. In some embodiments, the above described tracked initialization comprises a time from a transmission of an OOB signal (from the host to the peripheral device) to receiving an OOB response at the host device from the SATA peripheral device.
    • 本发明的实施例描述了用于为外围设备提供有效的低功率出口序列的方法,装置和系统。 在本发明的实施例中,来自主机设备的信号被传送到SATA外围设备以退出低功率状态。 跟踪SATA外围设备的OOB发送和接收逻辑的初始化时间,并且存储基于追踪的初始化时间的基准时间值。 在从所述低功率状态的后续转换中,利用用于唤醒主机物理层的参考时间值,从而提高所述低功率状态的管理和使用的效率。 在一些实施例中,上述跟踪的初始化包括从OOB信号(从主机到外围设备)的传输到在主机设备处从SATA外围设备接收OOB响应的时间。