{TAIL ~ Each delay stage} may be configured to phase shift {HEAD ~ a differential signal} based on a control signal 
{ TAIL ~ Each delay stage } may be configured to phase shift { HEAD ~ a differential signal } based on a control signal
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH