The digital clock recovery loop further includes a start up circuit which performs frequency detection when {HEAD ~ the voltage controlled oscillator} first starts up and, in conjunction with the charge pump and loop filters, causes {TAIL ~ the voltage} on the control node of the voltage controlled oscillator to change rapidly 
causes
The digital clock recovery loop further includes a start up circuit which performs frequency detection when { HEAD ~ the voltage controlled oscillator } first starts up and , in conjunction with the charge pump and loop filters , causes { TAIL ~ the voltage } on the control node of the voltage controlled oscillator to change rapidly
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH