topic Re: Lock/Unlock JTAG PowerPC e200z0 in MPC5xxx

Lock/Unlock JTAG PowerPC e200z0

jeanaimemaxa — Mon, 24 Oct 2022 16:10:45 GMT

Hello,

I would like to know how to lock/unlock (at software level) JTAG on PowerPC e200z0 (MPC56xx).

I did read this document: AN4365: MPC56xx Flash Programming Through Nexus/JTAG – Application Note (nxp.com),

but i was not able to find an answer

What is the requirement to be able to lock/unlock and the JTAG ?

Best regards,

Jean Aimé MAXA

Re: Lock/Unlock JTAG PowerPC e200z0

petervlna — Tue, 25 Oct 2022 07:11:04 GMT

Hello,

To lock/unlock JTAG you simply follow the reference manual:

In case you want to unlock it via SW, then I suggest you to prepare routine to get Censorship into default state in your application in advance or you can always change it via JTAG access if password is known.

Best regards,

Peter

Re: Lock/Unlock JTAG PowerPC e200z0

Abbass — Tue, 25 Oct 2022 12:16:03 GMT

Hello,

Which document you used to find the document ?

Can you please share with us the link of the reference manuel used ?

Thanks

Abbass

Re: Lock/Unlock JTAG PowerPC e200z0

petervlna — Wed, 26 Oct 2022 03:52:03 GMT

Hello,

I have used reference manual of MPC5604B:

https://www.nxp.com/webapp/Download?colCode=MPC5604BCRM

Best regards,

Peter