A device for coupling and decoupling two shafts or other elements of a drive train for transmitting rotations or torques especially to be used as a clutch segment in the field of motorcycle drives is provided. The piezoelectric unit is disposed on the carrier and includes at least a piezoelectric buzzer. A desired word length is determined based on the relationship between the bit clock and the word clock during the transmission or reception of a data word. The programmable interconnection circuitry limits possible application of at least some of these signals to one or the other of the subgroups, andor provides for possible application of at least some of these signals to a greater percentage of the primary inputs to one of the subgroups than to the other.