TDA4VM-Q1: Keywriter worked abnormal on TDA4VM88T5BALFQ1

Liu Hawayi

Part Number: TDA4VM-Q1
Other Parts Discussed in Thread: TDA4VM

Tool/software:

Dear TI experts:

We discover serveral SOC of TDA4VM that Keywriter worked abnormal , Device type has been change to "HSSE", KeyRevision and Count has been changed to 1, but the CustMPK section hasn't been changed. Why? How to fix this? Thanks!

Best regards

Hawayi

5 months ago

0 Diwakar Dhyani 5 months ago

TI__Guru 56465 points

Hi Hawayi

Do we have TIFS traces for the same ?

Is VPP is stable during keywriting ?

On how many samples you have seen this issue?

Regards
Diwakar

0 Liu Hawayi 4 months ago in reply to Diwakar Dhyani

Prodigy 170 points

No trace. about 2/500 , the same environment on the production line. below pic is the code of VPP control.

0 Diwakar Dhyani 4 months ago in reply to Liu Hawayi

TI__Guru 56465 points

It is difficult to debug this kind of issue with TIFS traces, also did you make sure that VPP was stable in failure case ?

Regards
Diwakar

0 Liu Hawayi 4 months ago in reply to Diwakar Dhyani

Prodigy 170 points

I'm not sure, but it's the same enviroment on the production line.

0 Diwakar Dhyani 4 months ago in reply to Liu Hawayi

TI__Guru 56465 points

Hi Liu,

Can you also start collecting he TIFS traces and also monitor VPP while flashing, so that if issue comes again, we will know the reason.

Regards
Diwakar

0 Liu Hawayi 4 months ago in reply to Diwakar Dhyani

Prodigy 170 points

How to collect the TIFS traces? Is the log of keywriter show as below?

0 Diwakar Dhyani 4 months ago in reply to Liu Hawayi

TI__Guru 56465 points

TIFS logs with come in wakeup UART, the logs you are seeing is from MCU UART, these are logs of keywriter app image running on R5 core.

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TDA4VM-Q1: Keywriter worked abnormal on TDA4VM88T5BALFQ1