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时钟线 振铃 过冲请教



使用 C6748 SDIO接口,时钟16Mhz,感觉有时不稳定,先从硬件排除问题

购买的开发板时钟信号如下所示:

我自己的板子信号原来也一样,后为减小振铃和过冲,串接22R电阻,不知道这样的图是改善了还是变坏了