in a second cycle, old data are latched into the read register while new data are latched into the write register, and at the same time a set of {HEAD ~ the data} are sent to the outside data buses and are latched into {TAIL ~ a read buffer}, 
are latched into
in a second cycle , old data are latched into the read register while new data are latched into the write register , and at the same time a set of { HEAD ~ the data } are sent to the outside data buses and are latched into { TAIL ~ a read buffer } ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH