T1ADAPT Ethernet Adapter

T1 Automotive two wire Ethernet to 100base TX (RJ45) media converter adapter for mobile robotics

What is this board?

The RDDRONE-T1ADAPT media converter translates between automotive 2-wire Ethernet (100BASE-T1) to Fast Ethernet (100BASE-TX). Automotive IEEE 100BASE-T1 compliant, with 100Mbit/s transmit and receive capability up to at least 15m of unshielded twisted pair (UTP) cable.

Based on the TJA1101B 100BASE-T1 PHY and the LPC812 microcontroller Arm® M0+ MCU family, this plug and play tool is well suited for the evaluation and debugging of 100BASE-T1 Ethernet networks in various applications like Automotive, Industrial and IoT segments. Further, it can be used to develop distributed architectures where robotics nodes are connected over robust and reliable 100BASE-T1 Ethernet interfaces.

List of Technologies & Specifications

Microcontroller (MCU) - LPC812: Cortex®-M0+ Core low-cost MCU​

Transceivers - TJA1101B: Automotive IEEE 100BASE-T1 compliant, 100Mbit/s transmit and receive capability up to at least 15m of unshielded twisted pair (UTP) cable

T1ADAPT Features:

  • Plug and play operation

  • Translation between 100BASE-T1 and 100BASE-TX Ethernet

  • DroneCode JST-GH connector or Pin header

  • LED status indicators

  • Supports simple connector schemes

  • Smaller size by not requiring RJ45 magnetics

  • Lightweight single pair wiring saves cost and weight

Interfaces - Fast Ethernet RJ45, Two wire Ethernet 100BASE-T1, “DCD-LZ” SWD UART

Power - 5V, Either via micro-USB or JST-GH Power connector​

Software - In this software solution for RDDRONE-T1ADAPT, the LPC812 to configures the two back to back PHYs over MDIO and drives status LEDs for the T1 PHY and manages network initiator/receiver mode switching. *Source files available on request​

Links

  • NXP link to the product webpage:

  • Design Files link:

  • GitBook link:

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