| 摘要 |
IC DEVICE COMPATIBLE WITH INPUT SIGNALS IN THE FORMATS FOR TWO-LINE AND FOUR-LINE TYPE BUS LINES An IC device has a first terminal for inputting data in the format for a four-line or two-line type bus line, and for outputting data, a second terminal for receiving a chip select signal, a third terminal for receiving a clock pulse, a fourth terminal for outputting data a first signal processor for receiving data from the first terminal in the format for a two-line type bus line and including an address signal and for outputting the data such first signal processor including a detector for detecting the address signal, a second signal processor for receiving the data supplied from the first terminal in the format of a four-line type bus line and outputting the data to the fourth terminal, the first and second signal processors being selectively enabled in accordance with the chip select signal, and a control unit for receiving the signal from the first or second signal processor and outputting the data to the first terminal or the first or second signal processors. |
