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UCD9222+UCD7242遇到的奇怪问题

Other Parts Discussed in Thread: UCD9222, UCD7242

     大家好,我在设计DSP6657的电源电路时参考的是技术手册推荐的设计,用的是UCD9222+ucd7242,一开始是用TI 的USB-TO-GPIO下载器还可以下载程序,第一个片子不知道是不是由于点了下载擦除的命令,导致后来下载器也无法识别片子,过了一天发现下载器都连接不上了,绿灯也不亮,不知道大家有没有遇到过这个情况,能否加Q442631060一起交流下,被这个问题卡的很难受