{HEAD ~ The output} of the ADC 7 is buffered in {TAIL ~ a FIFO} 8 
is buffered in
{ HEAD ~ The output } of the ADC 7 is buffered in { TAIL ~ a FIFO } 8
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH