| 摘要 |
<p>PROBLEM TO BE SOLVED: To adjust both the phase and pulse width of a balance transmit clock to conform with a reference clock waveform without any human intervention. SOLUTION: This circuit includes phase comparing circuits 13 and 14 which detect the phase shifts between the reference clock REF and the feedback FB of the clock output, counters 15 and 16 which count up respectively according to the phase shifts detected by the phase comparing circuits 13 and 14, and delay circuits 11 and 12 which delay the clock inputs according to the count values of the counters 15 and 16. One of the AND and OR outputs of the outputs of the delay circuits 11 and 12 is selected by a selector 23 to obtain the clock output.</p> |
