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  • Four-Port 10BASE-T1L Single-Pair Ethernet With Power Over Data Line Reference Design

    • TIDUF35A June   2023  – October 2024 AM6442

       

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  • Four-Port 10BASE-T1L Single-Pair Ethernet With Power Over Data Line Reference Design
  1.   1
  2.   Description
  3.   Resources
  4.   Features
  5.   Applications
  6.   6
  7. 1System Description
    1. 1.1 Terminology
  8. 2System Overview
    1. 2.1 Block Diagram
    2. 2.2 Design Considerations
    3. 2.3 Highlighted Products
      1. 2.3.1  AM6442 Microprocessor
      2. 2.3.2  DP83867 gigabit Ethernet Physical Transceiver
      3. 2.3.3  DP83TD510E Single-Pair Ethernet Physical Transceiver
      4. 2.3.4  MSPM0G1107 Microcontroller
      5. 2.3.5  LMK1C1106 6-Channel Output LVCMOS 1.8V Buffer
      6. 2.3.6  LMK6C Low-Jitter, High-Performance, Bulk-Acoustic-Wave (BAW) Fixed-Frequency LVCMOS Oscillator
      7. 2.3.7  TLVM13630 High-Density, 3V to 36V Input, 1V to 6V Output, 3A Step-Down Power Module
      8. 2.3.8  LM74700-Q1 Reverse-Polarity Protection Ideal Diode
      9. 2.3.9  TPS62825A Synchronous Step-Down DC-DC Converter
      10. 2.3.10 LMR36006 Ultra-Small Synchronous Step-Down Converter
      11. 2.3.11 TLV62568A High-Efficiency Step-Down Buck Converter With Forced PWM
  9. 3System Design Theory
    1. 3.1 Power Subsystem
    2. 3.2 AM6442 System on Module Subsystem
    3. 3.3 Ethernet Subsystem
    4. 3.4 Power Over Data Line (PoDL) Subsystem
    5. 3.5 Additional Subsystems
      1. 3.5.1 USB 3.1 Interface
      2. 3.5.2 Micro SD Card Interface
      3. 3.5.3 SimpleLink CC3301 Wi-Fi 6 and Bluetooth Low-Energy BoosterPack Interface
      4. 3.5.4 AM6442 UART Interface
  10. 4Hardware, Software, Testing Requirements, and Test Results
    1. 4.1 Hardware Requirements
      1. 4.1.1 Board Interface
        1. 4.1.1.1 Boot Switch Configuration
        2. 4.1.1.2 Starting up the Reference Design
    2. 4.2 Software Requirements
      1. 4.2.1 PoDL PSE Protocol Programming
      2. 4.2.2 Create an SD Card Image With U-Boot and Linux
    3. 4.3 Test Setup and Procedure
  11. 5Design and Documentation Support
    1. 5.1 Design Files
      1. 5.1.1 Schematics
      2. 5.1.2 BOM
    2. 5.2 Documentation Support
    3. 5.3 Support Resources
    4. 5.4 Trademarks
  12. 6About the Author
  13. 7Revision History
  14. IMPORTANT NOTICE
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Design Guide

Four-Port 10BASE-T1L Single-Pair Ethernet With Power Over Data Line Reference Design

Description

This reference design showcases an Ethernet gateway that functions as a bridge between four 10BASE-T1L single-pair Ethernet (SPE) ports with power over data lines (PoDL) and a 1000BASE-T Ethernet port. The four SPE ports function as power source equipment (PSE), providing 24V to field devices. The gateway is controlled by the AM6442 microprocessor and utilizes the Linux® operating system, allowing for flexible and scalable open-source software.

As an example, the reference design interfaces with edge processing board (TIDA-010261) over SPE with PoDL.

Resources

TIDA-010262 Design Folder
TIDA-010261 Design Folder
AM6442, DP83TD510E, DP83867IR Product Folder
TQ-3P-SOM-TQMA64XXL Product Folder
TIDA-010262 Ask our TI E2E™ support experts

Features

  • 24V power supply input
  • AM6442 microprocessor with dual-core 64-bit Arm® Cortex®-A53 and quad-core Cortex-R5F
  • Four 10 BASE-T1L single-pair Ethernet (SPE) ports
  • Each SPE is enabled with power over data line (PoDL) IEEE802.3cg
  • One MSPM0 to drive four port serial communication classification (SCCP)
  • Gigabit 1000BASE-T Ethernet port for cloud connection
  • USB 3.1 support and μSD card interface
  • Linux® operating system
  • Optional LaunchPad™ interface to connect to CC3301 Wi-Fi® 6 and Bluetooth® low-energy BoosterPack™

 
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