| 摘要 |
A clock signal generator includes a quartz crystal multivibrator circuit and a pulse-shaping circuit. The pulse-shaping circuit includes a D trigger. The D trigger includes a Q terminal, a Q' terminal, a CP terminal, and a D terminal. An output signal from the quartz crystal multivibrator is transferred to the CP terminal. The Q' terminal is connected to the D terminal. The Q terminal is an output end of the clock signal. A capacitor C 4 is connected between the CP terminal and ground. A capacitor C 5 is connected between the D terminal and ground. The capacitance of the capacitors C 4 and C 5 is adjusted to attain a clock signal of a predetermined frequency.
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