我们将在春节假期期间对网站进行维护,可能暂时无法访问,同时工程师回复将有所延迟,敬请谅解.

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LMK04821: PLL1偶尔会失锁,失锁后大约0.16ms再锁定;PLL2始终锁定

Part Number: LMK04821

我这边使用lmk04821,工作在Dual-pll cascaded zero-delay mode, TICS pro配置文件为lmk04821_config.tcs,参考时钟输入为10MHz、5dBm正弦波,从CLKin1输入。通过FPGA抓取芯片IO输出的PLL_DLD信号。发现PLL1偶尔会失锁,失锁后大约0.16ms再锁定;PLL2始终锁定。请问PLL1失锁的原因可能是什么,是否是配置不对。