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13.5 THE ONE-HOT DESIGN METHOD 643

CLRREGiT
a
} LDCNTiT

X(H,
Y(H)

CLRREG(H)
LDCNT(H)

FIN(H)
"")—RES(H)
STDLY(H)

(b)
FIGURE 13.28
Resolver configuration of Fig. 11.41 implemented by the one-hot design method, (a) Fully documented
state diagram for the resolver. (b) Equivalent ASM chart, (c) One-hot logic circuit constructed directly
from the ASM chart, state diagram, or from the NS and output functions in Eqs. (13.13).

13.5.2 Application of the One-Hot Method to a Serial 2's Complementer
Algorithm 2.6 in Section 2.6 presented a simple "pencil-and-paper" method of obtaining
the 2's complement of a binary number. As a simple example of the application of the
one-hot method in state machine design, Algorithm 2.6 will now be implemented. It is
recommended that the reader review and fully understand this algorithm before continuing
in this subsection.
Shown in Fig. 13.29a is the block diagram symbol for the serial 2's complementer
indicating that the binary input (Bin) is introduced LSB first to the complementer and
that the 2's complement output (T) is issued LSB first. The ASM chart and state diagram