A two wire dedicated diagnostic data port in an integrated circuit provides {HEAD ~ visibility} for {TAIL ~ all internal functions} of the integrated circuit 
for
A two wire dedicated diagnostic data port in an integrated circuit provides { HEAD ~ visibility } for { TAIL ~ all internal functions } of the integrated circuit
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH