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RM57L843: How to get SPNU578 and SPNU579?

Part Number: RM57L843

Hello,

Our team is developing a railway signalling system that requires a SIL 4 safety level.

To apply RM57 MCU in this system, it is requireed to review SRAC(Safety Application Condition) for RM57.

And I think below documents have those information 

  • Safety Analysis Report Summary for RM57x ARM®-Based Safety Critical Microcontrollers (SPNU578)
  • Detailed Safety Analysis Report for ARM®-Based Safety Critical Microcontrollers (SPNU579)

Unfortunately, I cannot figure out how to get those documents. 

Is there anyone help me to obtain SPNU578 and SPNU579?