Hi,
Thank you for your interest in NXP Semiconductor products,
SJC enabled would mean that JTAG is enabled? It's already enabled.
In i.MX 8/8X family, the system JTAG controller (SJC) provides a method of regulating the JTAG access.
SJC provides the following security levels:
- JTAG disabled – JTAG use is permanently blocked.
- No-debug – JTAG security sensitive features are permanently blocked.
- Secure JTAG – JTAG use is restricted (as in the no-debug level) unless a secret-key challenge/response
protocol is successfully executed.
- JTAG enabled – JTAG use is unrestricted.
The index and bit are 5[0] and 22, you can refer to this article for fuse programming.
Regards
