| 摘要 |
<p>A clock signal distribution system provides a set of synchronized, spatially distributed local clock signals (CLKL). The system includes a source of periodic reference clock signal (CLK), a set of spatially distributed deskewing circuits (12) and first and second transmission lines (18 and 20). The first transmission line routes the reference clock signal from the source (14) to the deskewing circuits in a first order of succession. The second transmission line routes the reference clock signal from the source to the deskewing circuits in a second order of succession that is reverse to the first order of succession. The two transmission lines are of similar length and velocity of signal propagation between adjacent deskewing circuits. Each deskewing circuit produces an output local clock signal having a phase that is midway between phases of the clock signal arriving at the deskewing circuit via the first and second transmission lines. The local ouput signals produced by the deskewing circuits all have the same phase and frequency despite varying distances of the deskewing circuits from the clock source.</p> |
