Efficient low power exit sequence for peripheral devices
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 t...
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Zusammenfassung: | 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. |
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