PARALLEL DATA OUT-PUT CIRCUIT

摘要

The parallel data output circuit can output the bits of data in a greater number than the number of predetermined bits of data. The circuit comprises first output port (10) having data output unit (11-14) for 4 bits of parallel data (DA10-DA13), a data selection unit (20) having multiplexers (21-24) for selectively outputting 4 bits of parallel data (DA14-DA17) and (DB10-DB13) according to a 8 bit output control signal (IUM), a second output port (30) having data output unit (31-34) for outputting the output data of unit (20), a first enable control unit (40) for receiving address signals (A0-A7) to transmit an enable signal (ENA10) to the port (10), and a second enable control unit (50) for receiving the address signals (A0-A7) and output control signal (IUM) to transmit an enable signal (ENB10) to the port (30).