14位ADC。使用verilog实现数据读写。SCLK时钟7.5MHZ。CS和SDI按照data上操作。但实测ADC的SDO数据波形和data上不一致。data上说一个读写周期(CS两个高脉冲之间的时间,总共32个时钟,前16个时钟ADC接收数据,后16个时钟ADC发送数据)的最后两个时钟SDO的电平保持为低,但我实测发现最后两个时钟SDO不为低。大神帮忙分析一下具体原因,谢谢。
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