The pump up circuit may be configured to generate {HEAD ~ a pump} up {TAIL ~ signal} in response to the data signal, and the control signal 
up
The pump up circuit may be configured to generate { HEAD ~ a pump } up { TAIL ~ signal } in response to the data signal , and the control signal
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH