CPC H04L 7/0087 (2013.01) [H04L 7/02 (2013.01)] | 17 Claims |
1. A data driving device comprising:
a clock recovery circuit to perform a clock training using a communication signal received during a plurality of time sections; and
a control circuit to change a set value of a circuit influenced by a frequency of the communication signal among circuits of the clock recovery circuit in each time section, to check a result of a clock training in the clock recovery circuit according to the change of the set value in each time section, and to determine an optimum value for the set value,
wherein the circuit comprises an oscillator which is either a current control oscillator or a voltage control oscillator, and
wherein the set value comprises a value of a reference current inputted into the current control oscillator or a value of a reference voltage inputted into the voltage control oscillator.
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