To provide a data transferring circuit capable of easily detecting the deviation of a nibble, and correcting the detected deviation without newly adding any signal line.

When original data are made transmittable, a transmission circuit 10 turns on an output permission signal. At the time of detecting that both output and input permission signals are ON, the transmission circuit 10 transmits the first divided data, and, when the input permission signal is OFF in that timing, the transmission circuit 10 transmits the second and following divided data. When the input permission signal is ON in that time, it is detected that any deviation is generated. When the divided data are made receivable, a receiving circuit 20 turns on the input permission signal. At the time of detecting that both the output and input permission signals are ON, the receiving circuit 20 turns off the input permission signal, receives the first divided data, turns on the input permission signal, and successively receives the following divided data.