主权项 |
1. A semiconductor device comprising:
a delay line comprising a first group of unit delay cells and a second group of unit delay cells, the first group of the unit delay cells and the second group of the unit delay cells configured for delaying a phase of a clock by a unit cycle of a reference frequency, the reference frequency serving as a reference for distinguishing between a first frequency and a second frequency; and a reservoir capacitor located adjacent to one or more of the unit delay cells of the first group, wherein only the first group of the unit delay cells are used to delay the phase of the clock. |