TIDUEY9 April   2021

 

  1.   Description
  2.   Resources
  3.   Features
  4.   Applications
  5.   5
  6. 1System Description
  7. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1 LP8770
        1. 2.3.1.1 Safety Features
          1. 2.3.1.1.1 Window Watchdog
          2. 2.3.1.1.2 Voltage Monitoring
      2. 2.3.2 AWR1843/xWR6843 mmWave Sensor Solution
    4. 2.4 System Design
      1. 2.4.1 Hardware Block Diagram
      2. 2.4.2 Software Components
        1. 2.4.2.1 Secondary Bootloader (SBL)
        2. 2.4.2.2 mmWaveLink APIs
        3. 2.4.2.3 mmWave Safety Diagnostic Library (SDL)
        4. 2.4.2.4 mmWave SDK Software Block Diagram
  8. 3Hardware, Software, Testing Requirements, and Test Results
    1. 3.1 Hardware Requirements
    2. 3.2 Test Setup
    3. 3.3 Test Results
  9. 4Design and Documentation Support
    1. 4.1 Design Files
      1. 4.1.1 Schematics
      2. 4.1.2 BOM
    2. 4.2 Tools and Software
    3. 4.3 Documentation Support
    4. 4.4 Support Resources
    5. 4.5 Trademarks
  10. 5About the Author

1 System Description

The TIDEP-01025 provides a reference for creating a diagnostic and monitoring application using TI’s AWR1843, AWR6843 and IWR6843 based on 77/60 GHz mmWave radio-frequency complementary metal-oxide semiconductor (RF-CMOS) technology. mmWave sensing technology detects vehicles, such as cars, motorcycles, and bicycles, at extended ranges regardless of environmental conditions, such as rain, fog, or dust. TI’s mmWave sensing devices integrate a 76-81GHz/60-64GHz mmWave radar front end with ARM® microcontroller (MCU) and TI DSP cores for single-chip systems.

TI mmWave SOC has built in circuits for diagnostic and monitoring which enables the detection of both the systematic and random faults. These safety mechanisms significantly reduce system complexity and cost in safety critical applications. It is important to test these diagnostic mechanisms using SafeTI diagnostic Library (SDL).

TI’s radar mmWave integrated chips (ICs) include hardware and firmware elements to enable monitoring of its mmWave analog and digital subsystems. These built-in features of RadarSS are exposed to application through firmware APIs.

This reference design demonstrates the usage of Inbuilt diagnostic and monitoring functionality of mmWave Radar Sensor. The design provides a list of required hardware, schematics, and reference software to quickly begin ASIL-B/SIL2 compliance product development. This reference design describes the example usage case as well as the design principle, implementation details, and engineering tradeoffs made in the development of this application. High-level instructions for replicating the design are provided. Here are few key diagnostic features of device:

STC, PBIST/LBIST, ECC, MPU, PARITY on miscellaneous memories and or peripheral. The details are covered in Safety Manual.

Note: Further in this document mmWave Sensor implies to AWR1843, AWR6843, IWR6843 and EVM implies to AWR1843BOOST, AWR6843ISK, IWR6843ISK unless otherwise mentioned.