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The ADC Offset Correction Register (OFS) contains the user-selected or calibration-generated offset error correction value. This register is a 2’s complement, left-justified,16-bit value . The value in OFS is subtracted from the conversion and the result is
transferred into the result registers, Rn. If the result is greater than the maximum or less than the minimum result value, it is forced to the appropriate limit for the current mode of operation.
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说说我得理解:
(1)ADC自校准偏移误差寄存器OFS存放着 用户自己标定的偏移误差,也可以是使能SC3[CAL ]硬件产生标定的偏移误差?
(2)标定误差后每次AD转换都会减去这个偏移误差,再存至结果寄存器
(3)但若采样结果超出范围,“it is forced to the appropriate limit for the current mode of operation”这句没有理解原理
2013.05.06 追加问题
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PG, a 16-bit real number in binary format, is the gain adjustment factor, with the radix point fixed between ADPG15 and ADPG14.
ADPG15 and ADPG14 是什么?
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