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AM3352+65910调试求助

Other Parts Discussed in Thread: AM3352

各位大神:大家好!
我现在用 AM3352+65910做了三块板子,参考广州天嵌的设计,一块电源及复位均正常。有两块电源正常,SYS_WARMRESETn复位不正常,始终为低电平,测试发现CAP_VDD_SRAM_CORE = 1.1V
CAP_VDD_SRAM_MPU = 1.1V,理论上应该为1.2V,24M晶振也没有波形,这可能是什么原因造成的呢?能否恳请各位大神指导一下!谢谢!