It is another object of this invention to provide an integrated circuit that includes {HEAD ~ a plurality} of {TAIL ~ 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 the circuit blocks to interface pins of the integrated circuit 
of
It is another object of this invention to provide an integrated circuit that includes { HEAD ~ a plurality } of { TAIL ~ 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 the circuit blocks to interface pins of the integrated circuit
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