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Four-Port 10BASE-T1L Single-Pair Ethernet With Power Over Data Line Reference Design
TIDUF35A
June 2023 – October 2024
AM6442
CONTENTS
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Four-Port 10BASE-T1L Single-Pair Ethernet With Power Over Data Line Reference Design
1
Description
Resources
Features
Applications
6
1
System Description
1.1
Terminology
2
System Overview
2.1
Block Diagram
2.2
Design Considerations
2.3
Highlighted Products
2.3.1
AM6442 Microprocessor
2.3.2
DP83867 gigabit Ethernet Physical Transceiver
2.3.3
DP83TD510E Single-Pair Ethernet Physical Transceiver
2.3.4
MSPM0G1107 Microcontroller
2.3.5
LMK1C1106 6-Channel Output LVCMOS 1.8V Buffer
2.3.6
LMK6C Low-Jitter, High-Performance, Bulk-Acoustic-Wave (BAW) Fixed-Frequency LVCMOS Oscillator
2.3.7
TLVM13630 High-Density, 3V to 36V Input, 1V to 6V Output, 3A Step-Down Power Module
2.3.8
LM74700-Q1 Reverse-Polarity Protection Ideal Diode
2.3.9
TPS62825A Synchronous Step-Down DC-DC Converter
2.3.10
LMR36006 Ultra-Small Synchronous Step-Down Converter
2.3.11
TLV62568A High-Efficiency Step-Down Buck Converter With Forced PWM
3
System Design Theory
3.1
Power Subsystem
3.2
AM6442 System on Module Subsystem
3.3
Ethernet Subsystem
3.4
Power Over Data Line (PoDL) Subsystem
3.5
Additional Subsystems
3.5.1
USB 3.1 Interface
3.5.2
Micro SD Card Interface
3.5.3
SimpleLink CC3301 Wi-Fi 6 and Bluetooth Low-Energy BoosterPack Interface
3.5.4
AM6442 UART Interface
4
Hardware, Software, Testing Requirements, and Test Results
4.1
Hardware Requirements
4.1.1
Board Interface
4.1.1.1
Boot Switch Configuration
4.1.1.2
Starting up the Reference Design
4.2
Software Requirements
4.2.1
PoDL PSE Protocol Programming
4.2.2
Create an SD Card Image With U-Boot and Linux
4.3
Test Setup and Procedure
5
Design and Documentation Support
5.1
Design Files
5.1.1
Schematics
5.1.2
BOM
5.2
Documentation Support
5.3
Support Resources
5.4
Trademarks
6
About the Author
7
Revision History
IMPORTANT NOTICE
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Design Guide
Four-Port 10BASE-T1L Single-Pair Ethernet With Power Over Data Line Reference Design
