| 摘要 |
<p>PURPOSE:To change the number of interfaces and its bits number by connecting plural serial interfaces independent of each other in series and operating them by the same serial clock. CONSTITUTION:A serial input data 10 from a terminal 9 is inputted to a shift register 11 of a serial interface section 1. The shift operation of the shift register 11 is executed synchronously with a shift clock 12, that is, a serial clock 24. The serial output data 14 of the shift register 11 is inputted to a shift register 19 of a serial interface section 2 as a serial input data 18 via an input signal switching section 6. On the other hand, the serial clock 24 is outputted to the shift register 19 as the shift clock 20 in the serial clock switching section 7. Then the shift operation of the shift register 19 is executed synchronously with the serial clock 24 and the serial output data 22 is outputted from a terminal 23.</p> |
