Page 694 - Engineering Digital Design
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NJ
                                                                             \BC
                                                                     0
                                                             0
                                                                                                       \BC
                                                                                               0
                                                                                      0
                                                                                                    AX 0°
                                                             0
                                                                 *
                                                                                                                                                            AX
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                                                   FIGURE 13.43
                                                                           AX oo 01 _
                                                                                      0
                                                                                                     01
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                                                                                              u
                                                                                                                                                            00
                                                                                                                                              [MXDLY
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                                                                                              1 )
                                                             MNDLY-HOLD
                                                                                                                                              1
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                                                                                                     10
                                                                                      0
                                                                                              0
                                                                                  /
                                                             0
                                                                  ^
                                                                           10
                                                                                                                                                       1
                                                                                                                                              1
                                                                                                                                                            11
                                                                                                                                  AX
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                                                                                  LDZERO
                                                                                                                                                 LJ — i
                                                                                                                                                   ri r
                                                        /DECDLY
                                                                                                    A
                                                                                                                                  0°
                                                                                                                             GO
                                                                           AX
                                                                                                                    MXDLY
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                                                                                                                                              1
                                                                                                                                                      *
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                                                                     0
                                                                                                                                        DA
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                                                                           oo
                                                                                                     01
                                                                                                                         ^~~
                                                                                                                    CNT+GO
                                                             MXDLY-HOLD
                                                                                                                                                            AX
                                                                                                     11
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                                                                                                                    0
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                                                             0
                                                                  ^
                                                                                                                         1 — D
                                                                           ° 1
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                                                                                                                                                            °0
                                                                                                     10
                                                                                                                                                      GO
                                                                     0
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                                                                                                                    CNT-HALT
                                                                                                                                                  *
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                                                                                                                           * I
                                                                                                                                A  I
                                                                           10
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                                                        /INCDLY
                                                                                                                                              1
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                                                                                                                                                     #
                                                                                                                                                            10
                                                                                                                                              CNT+HALT
                                                                                                     11
                                                                             01
                                                                                                     10
                                                                             11
                                                                             10
                                                NS and output K-maps plotted from the state diagram in Fig. 13.42 showing minimum cover for a glitch-free design of the stepping motor controller.
                                                        STDLY
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