标题: 看时钟电路图,英文的一小断。帮忙翻译下。 [打印本页] 作者: 曼陀罗 时间: 2008-9-11 12:27 标题: 看时钟电路图,英文的一小断。帮忙翻译下。 Btt_pwrgd# is an active low input used to determine when latched inputs are ready to be sampled .PD is an asynchronous active high input pin used to put the device into a low power state. The internal clocks,Plls and the crysatl oscillator are stopped.