It is another object of this invention to provide {TAIL ~ an integrated circuit} that includes a plurality of circuit blocks, each being independent of the other, and a gating mechanism that is responsive to externally excited mode select inputs to selectively couple one of {HEAD ~ the circuit blocks} to interface pins of the integrated circuit 
It is another object of this invention to provide { TAIL ~ an integrated circuit } that includes a plurality of circuit blocks , each being independent of the other , and a gating mechanism that is responsive to externally excited mode select inputs to selectively couple one of { HEAD ~ the circuit blocks } to interface pins of the integrated circuit
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH