An address sequencer provides {HEAD ~ a sequence} of addresses to the image buffer and to {TAIL ~ a response memory} 
An address sequencer provides { HEAD ~ a sequence } of addresses to the image buffer and to { TAIL ~ a response memory }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL