Patent ID: 8549191
Filing Date: 2013-10-01
Classification: G06F

Abstract:
1. A method for providing serial advanced technology attachment (SATA) hot unplug, the method comprising the acts of: detecting a physical connection of a SATA storage device to a host interface; monitoring physical (PHY) layer signals of SATA communication lines between the host interface and the SATA storage device, by a controller of the host interface; monitoring a phase locked loop (PLL) lock state of the PHY layer signals; detecting physical disconnection of the SATA storage device based on the monitored PLL lock state of the PHY layer signals; outputting a notification, by the controller, when the monitored PLL lock state of the PHY layer signals indicates that the SATA storage device has been physically disconnected; and low pass filtering a PLL lock signal corresponding to the PLL lock state to avoid false notification that the SATA storage device has been physical disconnected.