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ADS1298: id读取错误

Part Number: ADS1298

你好,我现在mcu用的是stm32f407, 在读ADS1298的id的时候一直读的是错的,但是其他寄存器都能正常读写。时序也用逻辑分析仪看过了,都是符合数据手册的要求的。CLKSEL、RESET、PWDN引脚接的DVDD,reset和pwdn 中间还各串了一个10k的电阻,START引脚接的DGND。VCAP电压也都是对的,VCAP1电压 1.17v,VCAP2 电压2.323v,VCAP3电压6.38v,VCAP4 1.174v, VREF-VREFN 2.345v,请问是哪出问题了?该怎么解决呢?