The multiplexer can be constructed from either mechanical switches or solid-state devices (such ad CMOS switches).

多路开关可以用机械开关或者固态器件（例如CMOS）开关构成。

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The state machine generates the select signal that controls multiplexer 510.

该状态机生成控制乘法器510的选择信号。

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State machine 515 can dynamically change the state of the select signal that controls multiplexer 510 to adjust the minimum pulse width of the UP and DN signals.

状态机515可动态改变控制乘法器510的选择信号的状态以调整UP和DN信号的最小脉冲宽度。

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