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

3.2.1 Diagnostic Features

The TCAN4550-Q1 device has several features that determines specific fault conditions in a system and indicate this back to the processor or place the device into a protected state that may include Sleep mode. Figure 3-5 is used to indicate these fault conditions. Figure 3-6 provides the devices state diagram and shows two protected modes and Sleep mode.

GUID-ABC9F164-020B-4EF4-8FC6-23BD374E2034-low.gifFigure 3-6 State Diagram
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