关于hmc1033 的问题，求帮忙，谢谢，弄了一个月了

Question

自己做了hmc1033的PCB板，用来产生500MHZ的时钟信号，写寄存器的代码如下： 
 HMC1033_Write(0x0A,0x2006); //reg A HMC1033_Write(0x08,0xC1BEfF);//reg8 HMC1033_Write(0x0F,0x81); //reg f HMC1033_Write(0x07,0x14d); // reg7 
 HMC1033_Write(0x0B,0xF8061);//reg b HMC1033_Write(0x0C,0x0); //reg c 
 HMC1033_Write(0x02,0x02); //XTAL R,Step1 reg 2 HMC1033_Write(0x06,0x2003CA);//A/B Mode,Step2 reg6 HMC1033_Write(0x09,0x10F264);//Charge Pump,Step3 reg 9 
 HMC1033_Write(0x05,0xFf88); // vco 01 HMC1033_Write(0x05,0xF98); // vco 3 HMC1033_Write(0x05,0x48B8); // vco 7 HMC1033_Write(0x05,0x0); //vco 0 
 HMC1033_Write(0x03,0x50); //reg 3 HMC1033_Write(0x04,0x0); //reg 4 HMC1033_Write(0x05,0x210); //VCO Subsystem,Step4 vco2 
 写完之后能产生500M的时钟，且信号质量也很好，但锁定指示引脚为低电平。重要的是，过几分钟后，产生的时钟就会严重抖动。结果如下图所示。我觉得hmc1033一直都没有锁定才产生此情况。 
 但也找不出什么问题，也不懂怎么解决，请问是我写寄存器顺序或是方法错误 吗？真心求帮忙，十分感谢

ADIApproved · Accepted Answer

请参考下面evb的寄存器：hmc1033_fracfb_LVPECL_Low_Noise 
 REVISION 1.0.1.0 
 REG 0 A7975 
 REG 1 2 
 REG 2 1 
 REG 3 2C 
 REG 5 210 
 REG 5 F98 
 REG 5 4B38 
 REG 5 0 
 REG 6 200B4A 
 REG 7 14D 
 REG 8 C1BEFF 
 REG 9 30ED5A 
 REG A 2006 
 REG B F8061 
 REG C 0 
 REG D 0 
 REG E 0 
 REG F 1 
 REG 10 A2 
 REG 11 19 
 REG 12 3 
 REG 13 1259 
 REG 14 0 
 REG 15 0 
 REG 16 0 
 REG 17 0 
 REG 18 0 
 REG 19 0 
 REG 1A 0 
 REG 1B 0 
 REG 1C 0 
 REG 1D 0 
 REG 1E 0 
 REG 1F 0 
 REG 4 147AE1 
 XTAL 50 
 DIVIDER_MANUAL_MODE 0 
 VCO_TO_SYNTH_DIV 1 
 VCO_TO_OUT_DIV 4