Part Number: TMS570LS1114
Other Parts Discussed in Thread: TPS65381A-Q1, HALCOGEN
Dear TI Functional Safety Support,
We are currently completing an FMEDA and hardware safety analysis for a railway warning controller platform in support of an IEC 61508 SIL 3 product safety case, with alignment to EN 50126, EN 50129, and EN 50716.
The design uses the TMS570LS1114 MCU together with the TPS65381A-Q1 watchdog / PMIC as part of the core vital architecture. We already hold several TI safety documents and certificates, however we now need to confirm the exact quantitative and assumptions-based safety-package data required to finalise the FMEDA and downstream hardware metrics.
Could you please provide, or confirm availability of, the following for the TMS570LS1114 / TMS570LS12x/11x family:
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The current applicable safety manual revision for the exact part/family baseline.
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The quantitative FMEDA / safety metrics package, including the documents referenced by the safety manual for chip-level failure rates and detailed quantitative safety analysis.
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SPNU530 and SPNU531, or the current equivalent documents if these have been superseded.
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The applicable TÜV certificate and any supporting certification report relevant to IEC 61508 SIL 3 use.
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Confirmation of the expected diagnostic assumptions for the safety case, including lockstep CPU compare, flash ECC, SRAM ECC, LBIST, PBIST, ESM, voltage/clock monitoring, and external watchdog supervision.
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Confirmation whether a used-function FMEDA partition or tailoring method is available for our application.
For the TPS65381A-Q1, could you please confirm:
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The current applicable FMEDA / safety package revision.
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The used-function subset relevant to watchdog Q&A, MCU rail monitoring, POR/reset behaviour, fault signalling, and mux / fail-safe flasher handover assumptions.
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Any diagnostic coverage assumptions that depend on periodic servicing, software interaction, or proof-test interval.
In addition, please advise availability of the following software-support items where relevant to the TMS570LS1114 safety case:
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SafeTI Hercules Diagnostic Library CSP
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HALCoGen CSP
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TI compiler qualification kit
Our intent is to use TI device-specific safety-package data as the primary quantitative basis for the MCU and watchdog rows in the WLX Controller FMEDA, rather than relying on generic handbook estimates.
Please let me know the correct request path, NDA requirements if any, and whether a local FAE or functional safety contact should be engaged for this package.
Best regards,
Robert
