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BQ79731-Q1: 正常上电后,SM_VF_ACOMP和SM_GP_ACOMP的诊断结果会置位

Part Number: BQ79731-Q1

Hi, Ti的工程师们

  我将79731通过SPI与TMS570直接连接,上电后程序正常运行。在做SM_VF_ACOMPSM_GP_ACOMP这两个诊断时,我回读寄存器发现:FAULT_ADC_VF [VF2_AFAIL], [VF1_AFAIL]会置位,FAULT_ADC_GPIO1[GPIO10_AFAIL],FAULT_ADC_GPIO2[GPIO4_AFAIL]会置位。根据芯片Safety Manual手册我们知道这两个诊断是比较主,冗余ADC的采样结果,如果比较结果超过阈值则设置寄存器相应的位。

我想知道现在寄存器会置位是什么原因造成的,是否与硬件相关?

谢谢!