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cdce62005 配置问题

Other Parts Discussed in Thread: CDCE62005

我们在做一个设计,用到cdce62005,输出时钟是155.52,输出也是155.52,用cdce来做时钟clean,我在配置cdce62005的时候,想把环路带宽设置成100hz,但是ratio pole T3 to T1这个选项设置总是出问题,一直显示是 1,

请帮忙看看是什么问题,谢谢

 

  • 用CDCE62005 GUI配置的吗?

  • 我用CDCE62005的EVM software简单配置了下,得到的寄存器结果为:

    REGISTERS
    0 EB020320
    1 68840301
    2 68860302
    3 68860303
    4 68860314
    5 100C0BE5
    6 04BE02E6
    7 BD0037F7
    8 80001808

    PORTS
    0 DD
    1 FF
    2 DF
    3 F9

    INPUTS
    PRI 155.52
    SEC 0
    AUX 0

    EXTERNAL COMPONENTS
    C4 1
    R4 1
    C5 1

    另外,几个分频系数分别为:input divider=4,feedback divider=24. VCO range=1866.24MHz,output divider=6

  • 截图过来看下。

    采用WBENCH工具尝试配置了,推荐的ratio pole T3 to T1是50%