| 摘要 |
<p>PURPOSE:To regenerate a clock stably with immunity to noise and less phase jitter. CONSTITUTION:A backward signal to delay a recovered clock is outputted when a condition 1 (levels of sampling data En-2, En-l, En have relations of En-2<LB, LB<=En-1<=LA and LA<En, where LA is a high level and LB is a low level) exists and the relation of En-1<LDC exists with respect to a DC level LDC of a detection signal. Moreover, when the relation of En-1>LDC, a forward signal to advance the phase of the recovered clock is outputted. Moreover, when the condition 2 (LA<En-2, LB<=En-1<=LA and En<LB) exists and the relation of En-1<LDC with respect to the DC level of the detection signal, the forward signal is outputted. Moreover, when the relation of En-1> LDC exists, the backward signal is outputted.</p> |
