NXP Semiconductors RDDRONE-T1ADAPT

Overview

RDDRONE-T1ADAPT from NXP Semiconductors is an automotive Ethernet 100BASE-T1 PHY evaluation and adaptation board designed to interface the TJA1101B transceiver with standard MII/RMII host controllers, supporting gateways, ADAS camera links, and radar modules. It enables 100 Mbit/s full-duplex communication over unshielded twisted-pair up to 15 m, features ASIL-A compliance per ISO 26262, OPEN Alliance TC-10 sleep/wake-up forwarding, and operates across −40 °C to +125 °C.

For engineers reviewing the RDDRONE-T1ADAPT datasheet, RDDRONE-T1ADAPT pinout, RDDRONE-T1ADAPT application, or RDDRONE-T1ADAPT equivalent, this page delivers verified functional context, validated interface compatibility with TJA1101B, confirmed automotive EMC performance (OPEN Alliance EMC Spec 2.0 Class IV), and precise integration guidance for ECU-level Ethernet node development.

Technical Context

The RDDRONE-T1ADAPT implements a hardware-adapted reference design for the TJA1101B 100BASE-T1 PHY, providing direct MII/RMII signal routing, configurable crystal or external clock input (25 MHz XTAL or 50 MHz REF_CLK), and TC-10-compliant wake-up signaling via WAKE_IN_OUT and INH pins. It supports both autonomous and host-controlled PHY operation modes, including Sleep Request, Silent, and full Sleep mode transitions.

Board-level features include on-board 3.3 V and 1.8 V regulation aligned with TJA1101B's dual-supply architecture, integrated MDI termination resistors, and PCB layout optimized for automotive EMC - meeting conducted emission limits per OPEN Alliance EMC Specification 2.0 and ESD protection up to ±8 kV IEC61000-4-2 without external components.

Key Specifications

Availability

RDDRONE-T1ADAPT is available at Aetrix Electronics and suitable for automotive gateway validation, ADAS sensor link prototyping, and radar module Ethernet interface development requiring stable component supply, traceable sourcing, and long-term lifecycle support.

Supply support for RDDRONE-T1ADAPT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in automotive Ethernet, radar, and safety-critical microcontrollers.

The RDDRONE-T1ADAPT belongs to NXP's automotive Ethernet ecosystem and was developed to accelerate adoption of 100BASE-T1 in ASIL-A–compliant ECUs by providing a production-representative, EMC-validated hardware platform for TJA1101B integration.

FAQ

What is the RDDRONE-T1ADAPT used for?

The RDDRONE-T1ADAPT is an evaluation and adaptation board designed exclusively for the TJA1101B 100BASE-T1 PHY. It provides a complete hardware interface - including power regulation, clock generation, MII/RMII signal routing, and MDI termination - enabling rapid integration of the TJA1101B into automotive Ethernet designs such as gateways and ADAS camera links. It is not a standalone IC or transceiver.

Does the RDDRONE-T1ADAPT include the TJA1101B IC?

Yes, the RDDRONE-T1ADAPT board includes one mounted TJA1101BHN IC in the HVQFN36 package. The board is pre-assembled and tested, with all required passive components, regulators, and layout optimizations for automotive EMC compliance - allowing immediate connection to an MII/RMII-capable host controller.

Can the RDDRONE-T1ADAPT support RMII mode with a 50 MHz external clock?

Yes, the RDDRONE-T1ADAPT supports RMII operation using either a 25 MHz crystal (with internal frequency doubling) or a 50 MHz external oscillator connected to the REF_CLK pin. Its layout and signal integrity design comply with RMII timing requirements, and the board exposes CLK_IN_OUT and REF_CLK pins for flexible clock source selection as defined in the TJA1101B datasheet.

How does the RDDRONE-T1ADAPT handle automotive wake-up and sleep functionality?

The RDDRONE-T1ADAPT fully implements OPEN Alliance TC-10 sleep and wake-up behavior through dedicated routing of the TJA1101B's WAKE_IN_OUT and INH pins. It supports local wake-up, remote wake-up forwarding, and automatic regulator control during Sleep mode - enabling system-level power management in gateways and radar ECUs without additional level-shifting or buffering circuitry.

Is the RDDRONE-T1ADAPT compliant with OPEN Alliance EMC Specification 2.0?

Yes, the RDDRONE-T1ADAPT PCB layout and component selection were validated to meet OPEN Alliance EMC Specification 2.0 Class IV conducted emissions limits on MDI pins. This includes optimized trace routing, ground plane integrity, on-chip termination usage, and ESD protection design that eliminates the need for external filters - matching the TJA1101B's built-in ±8 kV IEC61000-4-2 robustness.