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TMS320VC5402: HPI BOOT

Part Number: TMS320VC5402

Tool/software:

Thank you for your continued support.

My name is Maruyana.

I am having a problem where the system does not switch to HPI boot mode.

This is occurring in 1 out of 80 units.

I monitored

DVDD +3.3V, CVDD +1.8V,51-pin HINT, 27-pin XF,66-pin INT2.

Why does 27-pin XF go to Low?

  , XF remained Hi.

Why does 51-pin HINT go from Hi to Low to Hi?