Timing recovery in the read channel synchronizes to a phase and frequency of the preamble field and a sync detector detects {TAIL ~ the sync mark} in {HEAD ~ order} to frame operation of an RLL decoder for decoding the detected data field 
Timing recovery in the read channel synchronizes to a phase and frequency of the preamble field and a sync detector detects { TAIL ~ the sync mark } in { HEAD ~ order } to frame operation of an RLL decoder for decoding the detected data field
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH