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您好,感谢您的回复,今天通过clockdesign工具再重新配置了一下,两个PLL都能锁定了,只是PLL1锁定得比较慢,大概比PLL2慢个2秒才锁定的,这个情况算正常吗?
PLL的环路带宽会影响锁存时间,一般来说,PLL的锁存时间大约等于4/loop bandwidth.
但是如果fpd> loop bandwidth, 便会影响锁存时间。
大神,LMK04828在调试时采用Dual PLL模式,clkin1输入10MHz时钟,oscin输入125MHz-LVDS时钟,VCXO配125MHz,PLL2能锁住,PLL1不能锁住,读取0x182显示未锁定,LD1指示灯是闪烁状态