我在使用 CDCM6208 进行时钟分配设计时,遇到了一个异常问题:芯片的 PLL 在运行过程中会周期性地锁定后又失锁,PLL_UNLOCK
引脚状态在高低之间不断切换,表现为反复进入“锁定 → 失锁 → 再锁定”的循环。
以下是我的配置与使用情况:
Register 0: 01B7 Register 1: 0060 Register 2: 02CE Register 3: 00F0 Register 4: 30AB Register 5: 0001 Register 6: 0016 Register 7: 0001 Register 8: 0016 Register 9: 0003 Register 10: 0160 Register 11: 0000 Register 12: 0001 Register 13: 0160 Register 14: 0000 Register 15: 0051 Register 16: 0160 Register 17: 0000 Register 18: 0051 Register 19: 0160 Register 20: 0000 Register 21: 0000 Register 40: 0000 Inputs: Primary Input Frequency: 25 Secondary Input Frequency: 25 Version 1 C1: 0 R2: 0 C2: 0 R3: 0 C3: 0 Charge Pump: 0
status0现象为: