| 摘要 |
A frequency-division circuit comprises a pair of multi-state circuits (MSCA, MSCB). Each multi-state circuit can be switched throughout a cycle of states (SA( 1 ), . . . , SA(N); SB( 1 ), . . . , SB(N)). One multi-state circuit (MSCA) switches to a next state in response to a rising edge (Er) in an input signal (OS). The other multi-state circuit (MSCB) switches to a next state in response to a falling edge (Ef) in the input signal (OS). Each multi-state circuit (MSCA, MSCB) has at least one state (SA( 1 ), SB( 1 )) in which the multi-state circuit inhibits the other multi-state circuit (MSCB, MSCA) so as to prevent the other multi-state circuit from switching to the next state.
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