| 摘要 |
PURPOSE:To constitute a step generator with less number of resistors by controlling on/off of the 1st mode changeover switch and the 2nd mode changeover switch based on the mu rule designation signal or the A rule designation signal. CONSTITUTION:A mode changeover switch S22 is turned on normally, turned off at bit steal, a mode changeover switch S24 is turned off normally and turned on at bit steal based on the mu rule designation signal. The mode changeover switch S22 is turned on and the mode changeover switch S24 is turned on by the A rule designation signal. Switches SW0-SW16 are turned on/off by a low-order bit of a digital signal. |
