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AM5716: Inquiry about how to enabling/disabling JTAG

Part Number: AM5716

Hello Experts,

Customer would like to disable JTAG in Production phase to prevent the hacking from the outside, and they would like to enable JTAG for their development and internal debugging. Therefore, customer is looking for the documents which describes the JTAG Enabling/Disabling procedure including the resister configuration.

Can I have your Expert’s advice/comments on this request, please?

It seems customer already has SPRACD6.pdf because customer has NDA with TI. If TI needs to share this information offline, can I have your comments via email, please?

Best regards,

Miyazaki

  • Refer to CTRL_WKUP_SEC_TAP register in CTRL_MODULE_WKUP.

    MSbit of this register is Woco (Write, one-change-only), so writing '1' to that bit along with desired JTAG accessibility settings will lock the settings until the device is reset.