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请问ADS1282中SYNC是做什么用的，和读写程序有关系吗？我现在只是给接到了上拉3.3V电阻，不知道这是否和我的程序不一直读0有关系？
请楼主仔细读一下datasheet，第23页中有详细解释。有关硬件设计，请参考EVM原理图。http://www.ti.com/lit/ug/sbau144c/sbau144c.pdf
