| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a data input/output control device which is excellent in reliability for writing control data in an input/output device without generating any error. <P>SOLUTION: A CPU 1 address-designates an input terminal corresponding to a necessary control command, and outputs control data of 16 bits whose all bits are set to logic "1". A GPIO 30 fetches only input control data to the address-designated input terminal among control data input to each input terminal, and stores the fetched control data by a flip flop corresponding to the address-designated input terminal. The control data are output in which only the bits of an output terminal corresponding to the flip flop are set to logic "1" while the bits of the residual output terminals are not set to logic "1" from each output terminal. <P>COPYRIGHT: (C)2012,JPO&INPIT |
