a third memory for storing the control information from {HEAD ~ the remote control system} for controlling {TAIL ~ the multiplexers selection} 
for controlling
a third memory for storing the control information from { HEAD ~ the remote control system } for controlling { TAIL ~ the multiplexers selection }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL