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TMS570LS1224: SafeTI™︎ Hercules™︎ Diagnostic Library support for Unique Identifier OTP4B

Part Number: TMS570LS1224

Whilst doing the safety analysis of our project, we have been driven by the recommendations in the Safety Manual SPNU550B.  Of particular interest are the following sections:

7.35 FEE Contents Check by Hardware CRC

7.39 Flash Contents Check by Hardware CRC

Our analysis links these to the following Safety Feature IDs;

  • FEE2A
  • FEE2B
  • OTP4B
  • FLA5A
  • FLA5B

This is all fine, what is confusing me is that I can't find cover for OTP4B in the SafeTITm HerculesTm Diagnostic Library; all of the other IDs trace to the SL_CRC_Calculate fn whereas:

OTP4B Periodic hardware CRC check of OTP contents Not available Not in scope of this release
Given that the input args to this fn are an address and a count, how come it doesn't trace to OTP4B?
Marcus