The present invention provides a data transmitting/receiving apparatus which determines whether received data is destined therefor, and a received data analysis method thereof. In the data transmitting/receiving apparatus, a comparison circuit in a transmitter-receiver outputs any of real data related to part of reception data and all data related to all thereof in accordance with a reception data selection signal and supplies the same to a control circuit. Therefore, only the data necessary for reception processing by the control circuit is supplied, whereby the time required to perform a receiving operation by the present apparatus can be shortened and the efficiency of the receiving operation can be enhanced.