In a self refresh mode, data from the output of the sense amplifier is fed back via the transition circuit to {HEAD ~ the input} of {TAIL ~ the write amplifier} 
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In a self refresh mode , data from the output of the sense amplifier is fed back via the transition circuit to { HEAD ~ the input } of { TAIL ~ the write amplifier }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL