The predetermined digital control word is selected as {HEAD ~ a function} of the bit being converted and {TAIL ~ the preceding bits} 
of
The predetermined digital control word is selected as { HEAD ~ a function } of the bit being converted and { TAIL ~ the preceding bits }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL