Most of all, Thanks NXP guys for quick answer.
NXP Engineers' answers are very helpful to me.
Question 1 : I want to implement clock monitoring for MPC5777C(3N45H)
So I've studied MPC5777CRM and I found useful section 19.13.4 CMU output signals to FCCU and INTC (809page).
However, I have additional question about them.
The output signals of the CMUs are connected to the FCCU and CMU Interrupts.
I want to know correlation between CMU ISR and FCCU.
In other words, I want to configure only the FCCU. I don't want to use CMU ISR.
Is it possible?
I worry that If I don't configure CMU ISR, FCCU also doesn't work well.
Question 2: How can I make Clock fault forcibly. such as loss of clock or lock of lock, so on.
I alreday know FCCU fault injection and I tested that works well. I want to know other method for validation of clock monitoring.
Please give me advice.