Description
1 Description
1 Description
1.1 Overview
The BUELEC 100/1000Base-T1-TX-L is a compact bidirectional physical layer converter designed for seamless interoperability between standard RJ45 Ethernet (100/1000Base-TX) and dual-wire automotive Ethernet (100/1000Base-T1). Compliant with the 100/1000BASE-T1 protocol, it ensures full compatibility with automotive Ethernet PHYs from leading vendors such as NXP, TI, Broadcom, Marvell, and Realtek. The device delivers zero packet loss, rock-solid connection stability, and ultra-low latency, making it ideal for diagnostic, testing, and integration applications in automotive networks.
Built on proven PHY solutions—NXP TJA1101A for 100 Mbps operation and Marvell 88Q2112 for 1 Gbps—the converter offers excellent performance and superior electromagnetic interference (EMI) resistance. It supports dual power inputs via 5.5 mm DC barrel jack (5–16 V for 100 Mbps; 5–36 V for 1 Gbps) and USB Type-C, with a rugged, sandblasted aluminum alloy enclosure measuring just 103 × 71 × 26 mm. Integrated status LEDs provide real-time feedback on link activity and data rates, while an onboard MCU enables automatic master/slave mode switching with reset and supports future firmware upgrades or secondary development.
Chipset Architecture
- 100 Mbps Mode: NXP TJA1101A (T1 side) + Microchip KSZ8041NLI (TX side)
- 1 Gbps Mode: Marvell 88Q2112 (T1 side) + Realtek RTL8211FI (TX side)
- Mature, field-proven silicon ensures reliable full-duplex operation at theoretical line-rate speeds in both directions.
- Onboard MCU facilitates secondary development and over-the-air firmware updates.
Power Supply
- Dual-input design: 5.5 × 2.1 mm DC jack + USB Type-C PD
- Wide input voltage tolerance with low-ripple, stable regulation.
- Enables flexible deployment in bench, in-vehicle, or portable diagnostic scenarios.
Mechanical Design
- Ultra-compact form factor: 103 mm (L) × 71 mm (W) × 26 mm (H)
- CNC-machined sandblasted aluminum alloy housing for durability and heat dissipation.
Connectivity Accessories
- Includes 1× TE Mate-NET port adapter board
- Includes 1× HMD-T port adapter board
- Provides plug-and-play compatibility with common automotive Ethernet header connectors for rapid prototyping and field deployment.
Automotive-Grade Performance Chip
- AEC-Q100 qualified chip Marvell 88Q2112 for reliable operation in automotive environments.
- Integrated OPEN Alliance TC10-compliant EMI filter helps suppress common-mode noise and supports signal integrity over unshielded twisted-pair cabling.
Human-Machine Interface
- TX Side (RJ45): Pair of link/activity LEDs + speed indicator (100/1000 Mbps).
- T1 Side (Twinax): Pair of link/activity LEDs + dedicated master/slave status LED; 1 Gbps variant includes Signal Quality Indicator (SQI) display.
- Intuitive visual feedback for rapid troubleshooting of connection health, negotiation mode, and signal integrity.
1.2 Features
- Protocol Compliance: Fully supports IEEE 802.3bw (1000BASE-T1) for automotive single-pair Ethernet and IEEE 802.3ab (1000BASE-T) for traditional Gigabit Ethernet, ensuring reliable data transmission in mixed-network setups.
- High-Speed Performance: Delivers 1 Gbps full-duplex transmission rates over both T1 (single twisted pair) and TX (RJ45) interfaces, with auto-negotiation for 100/1000 Mbps compatibility and low-latency forwarding.
- Robust Protection: Integrated over-voltage, over-current, and ESD (electrostatic discharge) protection safeguards against electrical surges and harsh conditions, exceeding standard automotive requirements.
- Industrial-Grade Durability: Engineered to industrial standards with wide operating temperature range (-40°C to +85°C), vibration resistance, and EMI shielding, making it suitable for demanding environments like vehicles, factories, and outdoor installations.
- Advanced Networking Support: Includes IEEE 802.1Q VLAN tagging for traffic segmentation, QoS prioritization, and enhanced security in multi-device ecosystems.
- Plug-and-Play Design: Compact form factor with standard T1 connector (e.g., Rosenberger H-MTD or equivalent) on one side and RJ45 port on the other; powered via PoDL (Power over Data Line) or external DC input for flexible deployment.
2 Hardware Manual
2.1 Specification
| Items | Parameter | Description |
| Power Input | USB type-C | 5V/2A |
| DC Jack 5.5*2.1 | 5-36V (Comes with) | |
| Product Size | LxWxH | 103mm x 71mm x 26mm
(4.1″ x 2.8″ x 1″) |
| Product Weight | Kg | 0.2 |
| Product Case | Material | Aluminum alloy and sandblasted |
| Working Temperature | Degree | -45-85 Industrial |
| T1 Phy Chip | Marvell | 88Q2112 |
| Tx Phy Chip | REALTEK | RTL8211FI |
| Support OS | Windows,Linux,MacOs,Drivers free plug and play | |
| Support Device | PC,Notebook,ARM Board,Raspberry Pi,Jetson Nano,etc.. | |
| Manual IN EN | Provide Demo Command On Linux | |
2.2 Hardware Interface
 |
| Item | Parameters | Description |
| 1 | Status Indication | T1 connection status indicator.
· Light indicates a successful connection · Otherwise a failed Connection |
| 2 | Type-C Port Power Supply | 5V, compatible with phone chargers
· When Power from Type-C, no need to power from DC-Jack |
| 3 | DC Jack Power Supply | 5-36V, 5.5*2.1mm
· When Power from DC-Jack, no need to power from type-c port |
| 4 | Master/Slave Selection | Master/Slave working mode selection
· One has to be set as Master, the other has to be set as Slave when connection |
| 5 | 100Mbps/1000Mbps Selection | Working mode Selection
· 1000Mbps · 100Mbps |
|
|
| Item | Parameters | Description |
| 5 | 15EDGK-3.81mm left | 100/1000Base-T1 Port TRX_P
· Adaptive Support |
| 6 | 15EDGK-3.81mm Right | 100/1000Base-T1 Port TRX_N
· Adaptive Support |
| 7 | SQI | Signal Quality Indicator
· A constantly light signal indicates full signal strength. · The duty cycle is used to indicate communication quality. |
| Activity | Rx/Tx Indicator
· Led flashing when data transmission |
|
| 8 | 100/1000Base-Tx | 1000Mbps Tx, RJ45 Port |
2.3 15EDGK-3.81mm
 |
Part Number
15EDGK-3.81mm-2P |
2.4 15EDGK-3.81mm To TE MATEnet Adapter Board
 |
TE Part Number: 2304372-1
|
| Pin | Description |
| 1 | TRX_P |
| 2 | TRX_N |
2.5 15EDGK-3.81mm To H-MTD Adapter Board
 |
Part Number:
E6S20A-40MT5-Z |
2.6 Usage Connection Figure
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