Serial ATA (SATA) compliant with SATA 3.0 Specification, Peripheral Component Interconnect Express (PCIe) compliant with PIPE interface protocol, and USB compliant with USB 3.0, USB 2.0, make up the combo PHY (USB High-speed and Full speed). Lower power consumption is achieved by supporting additional internal power gating, reference clock control, and PLL control. Due to the flexible nature of the aforementioned low power mode option, the PHY is also extremely beneficial for a variety of situations under different considerations of power consumption.