SILant®

functional safety acceleration unit for detecting, containing, correcting and protecting against system faults.
ISO 26262 ASIL-D compliant.

SILant®, Silicon Mobility’s wholly integrated functional safety technology, goes beyond Safety Element out of Context (SEooC)

Benefits

  • Unload CPU from several safety tasks
  • Simplify software code
  • Drastically shorten Indication Time / Process Safety Time (PST)
  • Support system scalability and reuse
  • Save specification, development and assessment efforts

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SILant® is a superset of technology spread all over OLEA

  • SILant® Core protecting the safety core architecture,
  • SILant® Infrastructure protecting main resources and critical functions,
  • SILant® Fault Manager collecting faults, controlling faults reaction, containement and correction,
  • SILant® Sanity Checker monitoring latent faults.

SILant® Core

  • Asynchronous LockStep (ALS): Autonomous vectors verification in any order, at any moment and in any memory area, covering transient faults apparition.
  • Execution Flow Control (EFC): Monitors and checks applications state machines transitions and timings.
  • Event Sequence Control (ESC): Monitors and checks defined sequences and timing of application-dependent events.

SILant® Infrastructure

  • RAM with SECDED ECC
  • Flash with SECDED ECC
  • Interconnect with multi-layer MPU, ECC on data, Parity on Address and Command
  • Safe clock (IRC)
  • Clock monitoring
  • Safe I/O (Safe state restore)
  • I/O monitoring with loopback
  • I/O supply LVD
  • Core supply HVD & LVD
  • Temperature monitoring

SILant® Fault Manager

  • Fault-signaling
  • Configurable fault reactions
    • Sub-system, peripherals & global
    • Long – short duration
    • Safe clocks switch
    • Interrupt generations (Maskable & Non Maskable)
    • FLU reprogramming correction
  • External 2-pins
  • Faults diagnostic

SILant® Sanity Checker

  • Logic self test
  • BIST Memory
  • ADC self test

SILant® comes with a complete safety work package

Safety Manual

  • Safety Life Cycle
  • Safety architectures
  • Assumptions of usages
  • Safety analysis results
  • Traceability information

Safety analysis work product

  • MCU partitioning for safety analysis
  • FMEA concept report
  • Dependent Failure analysis report
  • Common Cause Failure (CCF) analysis report
  • Cascading Fault analysis report
  • SPFM, LPFM & PHFM Metrics

SILant® in action : safe sensorless Field-oriented Control (FoC), with Space Vector Modulation (SVM), of 3-phases Permanent Magnet Synchronous Motors (PMSM)

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  • AMEC® FLU is hosting a sensorless space vector modulation field-oriented control for 3-phases permanent magnet synchronous motor using redundant PWMT and ADC.
  • SILant® Fault Manager is collecting in parallel hardware checkers status monitoring for errors.
  • Event Sequence Control monitor the correct succession of events and report any error.
  • In case of error, SILant® Fault Manager is reporting to main application and automatically switch I/O's to safe state in nanoseconds.