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