SLLU312A July   2019  – May 2022 TCAN4550-Q1

 

  1.   TCAN4550-Q1 Functional Safety-Manual
  2.   Trademarks
  3. 1Introduction
  4. 2Product Functional Safety-Capability
  5. 3Product Overview
    1. 3.1 Block Diagram
    2. 3.2 Target Applications
      1. 3.2.1 Diagnostic Features
        1. 3.2.1.1 Mode Overview
        2. 3.2.1.2 Sleep Wake Error Timer (SWE)
        3. 3.2.1.3 Undervoltage
        4. 3.2.1.4 Thermal Shut Down
        5. 3.2.1.5 CAN Bus Communication
          1. 3.2.1.5.1 M_CAN
        6. 3.2.1.6 Processor Communication
          1. 3.2.1.6.1 SPI Integrity
            1. 3.2.1.6.1.1 SPI Scratchpad
            2. 3.2.1.6.1.2 SPIERR
            3. 3.2.1.6.1.3 M_CAN Forced Dominant and Recessive
            4. 3.2.1.6.1.4 SPI and FIFO
            5. 3.2.1.6.1.5 ECC for Memory
          2. 3.2.1.6.2 Timeout Watchdog
          3. 3.2.1.6.3 Floating Pins
          4. 3.2.1.6.4 RST Pin
          5. 3.2.1.6.5 Interrupt and Internal Fault Detection
  6. 4Development Process for Management of Systematic Faults
    1. 4.1 TI New-Product Development Process
  7. 5Revision History

1 Introduction

The system and equipment manufacturer or designer (as a user of this document) is responsible to ensure that their systems (and any TI hardware or software components incorporated in the systems) meet all applicable safety, regulatory and system-level performance requirements. All application and safety-related information in this document (including application descriptions, suggested safety-measures, suggested TI products, and other materials) is provided for reference only. Users understand and agree that their use of TI components in safety-critical applications is entirely at their risk, and that user (as a buyer) agrees to defend, indemnify, and hold harmless TI from any and all damages, claims, suits, or expense resulting from such use.

This document is a safety-manual for the Texas Instruments TCAN4550-Q1 aCAN FD controller with integrated transceiver for safety-critical applications. The safety-manual provides information to help system developers create safety-related systems using a supported TCAN4550-Q1. This document contains:

  • An overview of the product architecture
  • An overview of the development process used to reduce systematic failures
  • An overview of the safety architecture for management of random failures
  • The details of architecture partitions, implemented safety mechanisms, and recommended usage

The Safety Analysis Report documents the following information, which is not covered in this document:

  • Failure rates estimation
  • Qualitative failure analysis (design FMEA and pin-FMEA)
  • Quantitative failure analysis (quantitative FMEDA)
  • Safety metrics calculated per targeted standards per system example implementation

TI expects that the user of this document has a general familiarity with the TCAN4550-Q1 device. This document is intended to be used in conjunction with the pertinent data sheets and other documentation. This partition of technical content is intended to simplify development, reduce duplication of content, and avoid confusion as compared to the definition of safety-manual as seen in IEC 61508:2010.
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