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