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