Method for sampling reverse data and a reverse data sampling circuit for performing the same

摘要

A method for sampling reverse data and a reverse data sampling circuit for performing the same are provided. The reverse data sampling method of a host interface device includes generating a multi-phase clock; sampling clocks corresponding to respective phases of the multi-phase clock at a transition of a reverse data signal to generate clock sampling signals; sampling the reverse data signal at a transition of the clocks corresponding to the respective phases of the multi-phase clock to generate data sampling signals; selecting a sampling clock from the clocks corresponding to the respective phases of the multi-phase clock by using the clock sampling signals and the data sampling signals; and sampling reverse data at a transition of the sampling clock.