We use RH850/FL1 for an automotive product. To enhance security, we will need to disable/password-protect JTAG in the market.
While I am anticipating any registers are available to do that, I could not find any statements related to that in the RH850-F1L HW User Manual v1.30. Can you please the refister name and corresponding pages in the manual?
Thank you so much for your support.
Kohei
Thank you so much for your kind reply.
I now understand that when 0 is set to OPJTAG, JTAG is disabled. As you pointed out, killing JTAG completely is not a good strategy for our product, as analyzing return parts is indispensable.
I am planning to adopt the security ID instead. Terribly sorry but is this feature enabled by register configurations again? I would appreiciate if you would share places that expound on the security ID in the manual.
Thank you so much,
Kohei (Tokyo)
The security settings can be made via the flash programming serial interface using a programmer such as the PG-FP6 or using RFP. This would be the typical method for programming and configuring the device as part of the manufacturing process, where a security ID would be assigned to the hardware.
Section 35.4 of the hardware user manual provides all of the details.
Thank you for your kind reply. I understand.