A mobile system includes a first interface configured to transmit a payload in synchronization with a first clock signal through a first channel at a first transfer rate; and a second interface that includes: a payload storage connected to the first channel and configured to receive the payload from the first channel; and a payload receiver connected to the payload storage and configured to receive the payload from the payload storage in synchronization with a second clock at a second transfer rate through a second channel. A length of the second channel is shorter than a length of the first channel, and the first clock signal is asynchronous with the second clock signal.