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williamdong
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I  had locked the debug interface(JTAG) by config UCB_DBG.  now I use a wrong password to access the device through JTAG debug interface,  Does the device have some event to alert you that is an illegal access?

I didn't get any information from the user's manual  tc23x_tc22x_um_v1.1.pdf , I hope to get some answers from you. 

thanks 

william

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lock attach
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Di_W
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HSM part please not post here, but password can unlock Debug Interface again.  

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Di_W
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UCB_DBG is used for the password protection for the debug interface. PROCONDBG is a register to show if OCDS enabled and if UCB_DBG debug interface lock is configured.  

Details is in Section 4.1.6.4 - sub section Debug System handling of tc29xB_um_v1.3.pdf.



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Thank you for your prompt reply,  I have another question need your help. when i disable debug interface by software. the debug interface had been locked.But Lauterbach could not connect through the password set, showing "debug secured". What should I do to get my device back.

in another device, I just erased the sector where the UCB BUG was located. As a result I can't connect to it. What should I do in this situation, thank you very much

best

william

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Di_W
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1000 replies posted 250 solutions authored 100 likes received

Hi william, if you erased UCB, the chip will be bricked. If you lock the debug interface, then cannot debug, but password can unlock it. 

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My device is TC234L , If I want to implement the lock interface by modifying the UCB_DBG, What should I do? 

 

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lock attach
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Di_W
Moderator
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1000 replies posted 250 solutions authored 100 likes received

HSM part please not post here, but password can unlock Debug Interface again.  

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