Storage device including pad for determining link startup mode and method of controlling level of pad for determining link startup mode thereof

Abstract

A storage device including a non-volatile memory device; a memory controller controlling data input to the non-volatile memory device and data output from the non-volatile memory device; and a device interconnect layer transmitting signals received from a host to the memory controller. The device interconnect layer includes a first pad that inputs first data to be stored in the non-volatile memory device and that outputs second data stored in the non-volatile memory device; a second pad that receives a link startup mode signal from the host that indicates a link startup mode of the memory controller; a pull-down resistor between the second pad and a ground terminal; and a pad level control circuit that controls a voltage level of the second pad by controlling connection or disconnection of the pull-down resistor to the ground terminal based on the link startup mode signal.