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ucd9248控制ptd08d210w

Other Parts Discussed in Thread: UCD9248, PTD08D210W

请问,Xilinx的开发板ZC702,ucd9248控制PTD08d210W模块电压,PTD的B路没有电压输出是怎么回事?U21和U19本应输出2.5V和1.5V,但是输出的分别为0.25V和0V ,也没有发生短路,用TI USB重新烧录了程序,结果还是一样。

另外,测试了UCD的3.3V是正常的,如果PTD损坏,根据哪个引脚可以判断?