| 摘要 |
<p>PURPOSE:To make it possible to automatically recover, synchronism when step-out occurs by adjusting the synchronism by using the falling timing of a CMI code as a trigger. CONSTITUTION:A CMI code signal inputted from a CMI code input terminal 1 is latched by a P-DFF 13 at the rising timing of a doubled clock signal inputted from a doubled clock input terminal. An AND element 14 detects the fall of the CMI code signal by finding out AND between the output of the P-DFF 13 and the inverse of the CMI code signal. An AND element 15 detects a code error by detecting the fall of the CMI code signal when data are in a division. At the time of judging stepout by continuously detecting four code errors, a selector 20 is switched and the clock timing is adjusted by using the falling timing of the CMI code signal as a reference.</p> |
