Storage device for performing high-speed link startup and storage system including the same

A method of link startup between a first device and a second device, which are connected to each other through a plurality of lanes, the method comprising:

• transitioning, by the first device, a line of at least one of the plurality of lanes from a zero differential line voltage (DIF-Z) state to a negative differential line voltage (DIF-N) state;
• monitoring, by the second device, whether there is a lane transited from the DIF-Z state to the DIF-N state;
• recognizing, by the second device, a connected lane transited from the DIF-Z state to the DIF-N state, as a result of the monitoring;
• and
• performing the link startup between the first device and the second device in a high-speed mode, as the connected lane is recognized.

A device comprising:

• an interface configured to transmit and receive data through an interconnect unit to which a plurality of lanes are connected;
• a plurality of transmitters comprised in the interconnect unit, at least one of the plurality of transmitters being configured to perform data communication through a connected transmission lane and a connected reception lane from among the plurality of lanes and transmit an activate period of the connected transmission lane, which is less than a first time period, to the connected reception lane, and a line of the connected transmission lane, in the activate period, having a negative differential line voltage (DIF-N);
• and
• a plurality of receivers comprised in the interconnect unit,
• wherein the device is configured to perform link startup in a high-speed mode through the connected transmission lane and the connected reception lane, based on the activate period being less than the first time period.