TMS320F28377D: Reasons for triggering NMI Vector Fetch Mismatch

Li Jian Xian

Part Number: TMS320F28377D

Tool/software:

Dear all,

I'm learning the capabilities of the 377D.
Regarding the "NMI Vector Fetch Mismatch", I know that the redundant vector tables and vector tables not match will trigger this NIM.
I would like to ask what causes vector tables to not mach?
By wrong application code? Or hardware error?

thanks

8 months ago

0 Delaney Woodward 8 months ago

TI__Mastermind 18195 points

Hello,

I am looping in the NMI expert for comment on this. Please note that they will be out of office until early/mid January so their response will be delayed. I apologize for any inconvenience.

Best Regards,

Delaney

0 Prarthan Bhatt 7 months ago

TI__Genius 12865 points

Hi,

Vector Fetch mismatch is detected by comparing main and redundant vector tables. This is mainly to detect hardware faults in vector address bits.
See below how data read/write and vector fetch work for main and redundant vector tables.

Thanks

0 Li Jian Xian 7 months ago in reply to Prarthan Bhatt

Prodigy 70 points

Got it.

I deliberately wrote the redundant vector table, which can trigger pie vector error.

Thanks

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TMS320F28377D: Reasons for triggering NMI Vector Fetch Mismatch