Patent ID: 11947379
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 7:
8. A system including a host interface disposed in a host for communicating data with an external device through a level shifter, the host interface comprising:
a phase shift detector;
a phase shifter; and
control logic configured to control operation of the phase shift detector and the phase shifter,
wherein the host interface is configured to send a command and a main clock signal to the external device through the level shifter, receive a response from the external device through the level shifter, and receive a feedback clock signal from the level shifter,
wherein the phase shift detector is configured to select one of the response and the feedback clock signal as a selected value in response to receiving an input selection signal, and to provide a shift value based on the selected value,
wherein the phase shifter is configured to modulate a phase of the main clock signal based on the shift value to generate a modulated clock signal,
wherein the host interface is configured to send data to the external device through the level shifter synchronously with the main clock signal, and
wherein the host interface is configured to sample data received from the external device through the level shifter using the modulated clock signal.