| 摘要 |
PURPOSE:To execute delay as shown by a set value while preventing malfunction by providing plural shift register blocks and a specified selectors and providing specified switches on the input sides of the respective shift register blocks. CONSTITUTION:Plural shift register blocks 1-1-1-n and selectors 2-1-2-n are provided corresponding to the respective shift register blocks 1-1-1-n, to select either the output signals of the shift register blocks 1-1-1-n or the input side signals of the shift register blocks 1-1-1-n. On the input sides of the respective shift register blocks 1-1-1-n, switches 3-1-3-n are provided to change over the signals either to the input sides of the shift register blocks 1-1-1-n or to the input sides of the selectors 2-1-2-n passing the shift register blocks 1-1-1-n. After switching the number of register steps, the signal remaining in a shift register circuit is prevented from outputting. Thus, delay can be executed as shown by the set value while preventing malfunction. |
