TMS320F28388D: OTP programming

Prodigy 140 points

Part Number: TMS320F28388D

Hello,

i try to program the OTP area (e.g. JTAG password) with Code Composer Studio, error occurs.

As shown below. How should the OTP be programmed?

Thanks for support.

Chao

over 3 years ago

0 Pramod P over 3 years ago

TI__Expert 5430 points

Hi,

Please go through the below e2e post where something similar has been discussed and resolved. This should resolve your issue.

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1208346/tms320f28386d-jlm-enable-register-in-otp-can-t-be-programmed-using-ccs

Thanks & Regards

Pramod

0 CH over 3 years ago in reply to Pramod P

Prodigy 140 points

Hi,

Thanks but it is not the same issue here.

I am here trying to program the JTAG password, it is already aligned with 64 bit.

+1 Pramod P over 3 years ago in reply to CH

TI__Expert 5430 points

Hi,

Since this is an OTP area (which means these locations (0x78014 - 0x78016) are programmable only once. There is a default value that is already programmed on these locations. Kindly modify the values on these passwords after taking into account the already programmed bits in the PSWD values.

For instance, instead of attempting to program 0xFFFFFFFD on 0x78014, try 0x4BFFFFFD since there is already a default value of 0x4BFFFFFF on this location. same goes to 0x78016. The table of the default values are given in the device TRM.

Let me know do this will allow you to successfully program your passwords after taking acre of the default values.

Thanks & Regards

Pramod

0 CH over 3 years ago in reply to Pramod P

Prodigy 140 points

Hi,

thanks for the reply.

Regarding the default value, where can i find the information in TRM?

I have this TRM: TMS320F2838x Microcontrollers TRM (Rev. B)

This is the only info i found: so i assume the default value is 0xFFFFFFFF

0 Pramod P over 3 years ago in reply to CH

TI__Expert 5430 points

Hi,

Please refer to Table 6.3 which has the default values listed for various locations of the OTP.

Let me know if trying this resolves your issue.

Thanks & Regards

Pramod

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TMS320F28388D: OTP programming