For example, referring to FIG 2, the master {HEAD ~ TAP} may be in UPDATE DR while the slave TAP is in {TAIL ~ RTI} 
For example , referring to FIG 2 , the master { HEAD ~ TAP } may be in UPDATE DR while the slave TAP is in { TAIL ~ RTI }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL