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    D1s晶振不起振问题

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    • L
      litengos LV 4 last edited by

      按照D1s哪吒V1.1设计的板子,上电后PhoenixSuit设备不到USB设备烧录不了固件,测了芯片供电正常,但晶振不起振1673493788187.jpg

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      • whycan
        whycan晕哥 LV 9 last edited by

        检查PLL供电,复位电平,

        另外是怎么确定不起振的?

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        • L
          litengos LV 4 @whycan last edited by

          This post is deleted!
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          • L
            litengos LV 4 @whycan last edited by

            @whycan 晶振旁边电容没电压,示波器测没波形。是不是不需要做任何boot 配置,内部有类似与bootloader的程序启动晶振

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            • whycan
              whycan晕哥 LV 9 @litengos last edited by

              @litengos
              复位电平正常吗?

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              • L
                litengos LV 4 @whycan last edited by

                @whycan 正常的,芯片背面没有接地有影响吗?

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                • whycan
                  whycan晕哥 LV 9 @litengos last edited by whycan

                  @litengos

                  肚子底下那一大块是芯片唯一的一个数字地,你说有没有影响?

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                  • E
                    exculivor LV 3 last edited by

                    我也遇到相同的问题了,刚开始32.768的起振,24的测量不到,后来换了片芯片,32.768的也不起振了。芯片背面的接地正常。27脚RESET电平是3.3V,焦头烂额的....

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                    • whycan
                      whycan晕哥 LV 9 @exculivor last edited by whycan

                      @exculivor
                      芯片所有电源引脚和地线都检查一下。

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                      • L
                        li15872728466 LV 3 last edited by

                        D1S的晶振不是24M 18PF的吗 12pf?

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