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