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28035的ADC转换,触发后的第一次是不是不准确?

在TI 的电机控制例子中(f2803xileg_vdc.h),初始化ADC时有一段:

AdcRegs.ADCSOC0CTL.bit.CHSEL = 9; /*Dummy meas. avoid 1st sample issue Rev0 Picollo*/

意思是SOC0是一次哑转换,以避免第一次采样的不正确?