An electronic device comprising: a clock generator configured to generate a clock signal; and a host control module configured to: transmit, to a memory device, a first clock signal based on the generated clock signal; transmit, to the memory device, at least one of: a change signal comprising a second clock signal obtained by modifying at least a portion of the first clock signal; and a tuning related command comprising a command for modifying a mode or type of the memory device from a first mode or type to a second mode or type; receive setting data from the memory device, wherein the received setting data comprises setting data corresponding to at least one of the change signal and the tuning related command; and determine a data sampling point for a data signal output by the memory device based on the received setting data, characterized in that the host control module is configured to obtain the change signal by one or more of: modifying a waveform of the first clock signal; and time-delaying the first clock signal; and wherein the tuning related command comprises type change information for changing the type of the memory device. a clock generator configured to generate a clock signal; and a host control module configured to: transmit, to a memory device, a first clock signal based on the generated clock signal; transmit, to the memory device, at least one of: a change signal comprising a second clock signal obtained by modifying at least a portion of the first clock signal; and a tuning related command comprising a command for modifying a mode or type of the memory device from a first mode or type to a second mode or type; receive setting data from the memory device, wherein the received setting data comprises setting data corresponding to at least one of the change signal and the tuning related command; and determine a data sampling point for a data signal output by the memory device based on the received setting data, characterized in that the host control module is configured to obtain the change signal by one or more of: modifying a waveform of the first clock signal; and time-delaying the first clock signal; and wherein the tuning related command comprises type change information for changing the type of the memory device. transmit, to a memory device, a first clock signal based on the generated clock signal; transmit, to the memory device, at least one of: a change signal comprising a second clock signal obtained by modifying at least a portion of the first clock signal; and a tuning related command comprising a command for modifying a mode or type of the memory device from a first mode or type to a second mode or type; a change signal comprising a second clock signal obtained by modifying at least a portion of the first clock signal; and a tuning related command comprising a command for modifying a mode or type of the memory device from a first mode or type to a second mode or type; receive setting data from the memory device, wherein the received setting data comprises setting data corresponding to at least one of the change signal and the tuning related command; and determine a data sampling point for a data signal output by the memory device based on the received setting data, characterized in that the host control module is configured to obtain the change signal by one or more of: modifying a waveform of the first clock signal; and time-delaying the first clock signal; and wherein the tuning related command comprises type change information for changing the type of the memory device. modifying a waveform of the first clock signal; and time-delaying the first clock signal; and wherein the tuning related command comprises type change information for changing the type of the memory device.