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Copy: 在使用S32K3XX的功能安全包safetypack时,CMU检测中断配置

This post is a copy from here

Customer purchased SAF version 1.0.2.

在使用CMU_FC_0通道检测时,为什么DCMRWP3配置成0X100时,就不会产生破坏性复位了?因为在规格书上看,DCMRWP3寄存器的bit8是Reserved的,那DCMRWP3配置成0X100,怎么会起用用呢?



Safety_SWRe: Copy: 在使用S32K3XX的功能安全包safetypack时,CMU检测中断配置

Hi Daniel,

CMU_FC_0 monitors FXOSC clock, you can configure reaction to interrupt (SYNC event) or destructive reset (ASYNC event). Please use RTD MCU module to configure the reaction properly:

RadoslavB_0-1758878134388.png

RadoslavB_1-1758878231859.png



DCMRWP3 allows to demote default destructive reset reaction for PLL Loss Of Lock into interrupt.
I don't think there is a way to force this fault by SW means (fault injection via EIM) to check this setting.
There is no relation between DCMRWP3 and CMU_FC_0.

Kind Regards,
Radoslav

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‎11-21-2025 06:18 AM
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