| 摘要 |
PURPOSE:To automatically switch a re-timing clock by the transmission form of an S interface transceiver. CONSTITUTION:At the master side of the S interface transceiver, there are plural forms of transmission paths and it is necessary to perform reading by switching to a reception timing according to the transmission form at the time of reception. Re-timing reception data 2 is performed by a digital PLL circuit 5. Thus the phase of a clock signal 8 and the phase of a transmission clock signal 10 are compared by a phase comparator 9. When the comparison result is proved to be the phase difference outside the set value, a re-timing clock signal 3 is outputted and the re-timing clock of the reception timing circuit 6 can be switched. |
