An apparatus for processing data includes a plurality of signal processing units, each signal processing unit including a register that stores identification (ID) information to store a parameter, the signal processing units operative to sequentially perform an operation of storing the parameter or an operation of processing a signal in response to a mode control signal; a storage unit; a data reading unit that selectively reads parameter information or processing data from the storage unit; a data writing unit that selectively writes data corresponding to a data signal output by each of the signal processing units in the storage unit; and a control unit that outputs the mode control signal to each of the signal processing units. During the operation of storing the parameter, when the data signal corresponds to the ID information, each of the signal processing units writes a parameter included in the data signal in the register.