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