A block available signal and a block out signal is also provided to determine when {HEAD ~ a block} of {TAIL ~ data} is available to be read from the memory 
of
A block available signal and a block out signal is also provided to determine when { HEAD ~ a block } of { TAIL ~ data } is available to be read from the memory
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 OTH OTH OTH OTH OTH OTH OTH OTH