MPC5777C: Does the CMU_2 would affect the e2eECC?

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MPC5777C: Does the CMU_2 would affect the e2eECC?

68 Views
hongpingxu-b364
NXP Employee
NXP Employee

Hi,

 

On RM, CMU_2 is used for Crossbar, Memories and Flash Controller, etc. ECC also covers some of them. If CMU_2 detect faults and report to FCCU, does it also can cause the e2eECC error report? If yes, how?

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Best regards,

 

Hornby

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3 Replies

48 Views
hongpingxu-b364
NXP Employee
NXP Employee

Hi,

My customer reported that they got their customer return.

When they duplicate the problem, they find that FCCU will report CMU_2 errors, and most of the time RAM ECC will report errors at the same time, so the customer wants to confirm whether the two are related?

Best regards,

Hornby

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12 Views
davidtosenovjan
NXP TechSupport
NXP TechSupport

I see.

If CMU monitors clock source for the memory as it is in this case, then it is apparently possible. I would expect bus error in such case when stable clock is not provided to to memory module.

 

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57 Views
davidtosenovjan
NXP TechSupport
NXP TechSupport

Hi, I am afraid I don't see any relation between CMU and e2eECC. Could you specify the question more in detail?

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