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ADS1256复位时（RESET引脚为低电平），时DRDY引脚的电平值应该是多少？
手册上有这么一句话 (SBAS288K − JUNE 2003 − REVISED SEPTEMBER 2013) P27
Exiting from Reset, Synchronization, Standby or Power-Down mode will also force DRDY high. DRDY will go low as soon as valid data are ready.
由此推断应该是高电平.
那就应该是DVDD，我用的DVDD是三伏，但是复位时（RESET引脚为低电平时）测得的DRDY只有300毫伏左右，请问是什么原因呢？
