The filtered signals from the four filters are passed sequentially through the four to one multiplexer with {HEAD ~ the multiplexer control signal} being supplied by {TAIL ~ the controller} 
supplied by
The filtered signals from the four filters are passed sequentially through the four to one multiplexer with { HEAD ~ the multiplexer control signal } being supplied by { TAIL ~ the controller }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL