Patent ID: 8045663
Filing Date: 2011-10-25
Classification: G11C

Abstract:
1. A method of controlling skew between a clock signal and data in a data transmission/reception system that includes a transmitting side and a receiving side, the method comprising: transmitting a pseudo data pattern, synchronized with a transmission sampling clock signal, from the transmitting side to the receiving side during a training operating mode of the data transmission/reception system; sampling the transmitted pseudo data pattern at the receiving side using at least one of a first clock signal and a second clock signal during the training operating mode, and obtaining skew information data from the sampled pseudo data pattern; transmitting a read command from the transmitting side to the receiving side during the training operating mode; outputting the skew information data from the receiving side to the transmitting side in response to the read command from transmitting side in the training operating mode; receiving the skew information data at the transmitting side and controlling a phase of the transmission sampling clock signal according to the skew information data.