Bcm89890

To help you properly, could you clarify what kind of "piece" you need? For example:

If you can share the context (automotive gateway, switch, ECU, etc.) or what you're trying to do (debug, design-in, write firmware), I’ll provide the correct technical piece accordingly.

Technical Report: BCM89890 Multigigabit Automotive Ethernet PHY

The BCM89890 is a high-performance, single-port Multigigabit Automotive Ethernet PHY developed by Broadcom. It is designed to meet the increasing bandwidth demands of Software-Defined Vehicles (SDVs), Advanced Driver Assistance Systems (ADAS), and high-resolution infotainment systems. 1. Key Technical Specifications

is based on the BroadR-Reach technology and supports a wide range of data rates over a single twisted-pair cable.

Supported Standards: Fully compliant with IEEE 802.3ch (2.5G/5G/10GBASE-T1).

Data Rates: Supports 100M, 1G, 2.5G, 5G, and 10Gbps full-duplex transmission.

Interface Support: Compatible with SFP+ and RJ45 modules through media converters.

Transmission Distance: Optimized for point-to-point data transmission without significant delay or packet alteration. 2. Core Features & Capabilities

MACsec Security: Supports Media Access Control Security (MACsec) to provide secure communication between ECUs. Recent Vector Driver Package updates

have addressed specific bug fixes for MACsec nextPN handling and rekeying on ports using the

Energy Efficiency: Implements low-power modes to reduce standby power consumption, a critical requirement for automotive "always-on" features.

Plug-and-Play Integration: Devices using this chip, such as the InnoMaker Media Converter, often require no additional driver installation for basic conversion tasks.

Diagnostic Tools: Includes LED indicators for link status and speed, and supports master/slave configuration via DIP switches in many reference designs. 3. Application Areas

is a foundational component for the next generation of vehicle architectures:

Backbone Networking: Acts as the primary data highway for Software-Defined Vehicles (SDV).

ADAS & Sensors: Handles high-bandwidth raw data from high-resolution cameras and LiDAR sensors.

Testing & Validation: Widely integrated into automotive Ethernet interfaces like the Vector VN5000 family for simulation and measurement. 4. Recent Maintenance & Fixes As of late 2025 and early 2026, software support for the has focused on stability in complex network environments:

Fixed issues where CANoe measurements would stop/restart unexpectedly in deterministic transmit modes. bcm89890

Improved TCP retransmission handling in Ethernet host connections. VN5000 Ethernet Interface Family Manual - Vector

* 1 Introduction. * 2 General Information. * 3 VN5601. * 4 VN5601A. * 5 VN5610A. * 6 VN5611. * 7 VN5612. * 8 VN5614. * 9 VN5620. * Vector Group Vector Driver Package Release Notes

The Broadcom BCM89890 is a high-performance, multigigabit Ethernet transceiver (PHY) specifically designed for automotive applications. It belongs to the BCM8989X family and is recognized as the world's first IEEE 802.3ch-compliant device of its kind. Key Specifications and Features

The BCM89890 is engineered to handle the high-speed data demands of modern vehicles while maintaining automotive-grade reliability.

Multigigabit Support: Fully compliant with the IEEE 802.3ch standard, supporting data rates of 10G, 5G, and 2.5GBASE-T1 over a single pair of shielded twisted-pair (STP) cables.

Integrated Security: Features built-in 802.1AE MACsec with 128/256-bit AES encryption, providing hardware-level security to protect in-vehicle data from cyberattacks and breaches.

Optimized Interfaces: Supports high-speed PCIe and XFI interfaces, which are optimized for seamless connection to host SoCs or automotive switch ICs.

Precision Timing: Includes PHY timestamping support for IEEE 1588 and 802.1AS, essential for time-sensitive networking (TSN) applications.

Automotive Grade: The device is AEC-Q100 qualified, ensuring it meets stringent requirements for electromagnetic interference (EMI), noise cancellation, and operation in harsh environments. Primary Applications

As vehicles move toward software-defined architectures, the BCM89890 serves as a critical backbone for high-bandwidth systems:

Advanced Driver Assistance Systems (ADAS): Providing the necessary bandwidth for high-resolution sensors and cameras.

Infotainment & Telematics: Supporting data-intensive entertainment systems and external vehicle communications.

Zonal Architecture: Acting as a high-speed gateway or ECU-to-ECU backbone for decentralized vehicle processing. Implementation and Support

For developers and engineers, technical documentation including data sheets and reference manuals for the BCM89890 can typically be accessed through Broadcom's docSAFE portal. Additionally, the chip is supported by automotive testing tools such as the Vector VN5000 Ethernet interface family for monitoring and simulation. BCM89890 | Multigigabit Automotive Ethernet PHY with MACsec

Broadcom BCM89890 is a multigigabit automotive Ethernet Physical Layer (PHY) transceiver specifically designed for high-bandwidth, secure in-vehicle networking. It was notable for being the industry's first PHY to comply with the IEEE 802.3ch standard for automotive multigigabit Ethernet. Key Technical Specifications

The BCM89890 provides the infrastructure for high-speed data transmission required by modern vehicle systems like ADAS, infotainment, and central gateways. Supported Data Rates: It offers flexible connectivity with support for 10GBASE-T1

speeds over a single pair of unshielded twisted-pair (UTP) copper cable. Features integrated 802.1AE MACsec

with 128/256-bit AES encryption to secure data moving between Electronic Control Units (ECUs). Interfaces: To help you properly, could you clarify what

Optimized for high-speed connections to switch ICs or host SoCs using interfaces. Reliability: AEC-Q100 qualified

, meeting stringent automotive requirements for electromagnetic compatibility (EMC) and extreme temperature operation. Primary Applications The chip is a critical component for Software-Defined Vehicles (SDVs) , where high-speed backbone communication is essential for: Autonomous Driving (ADAS):

Processing massive amounts of sensor data from cameras, LIDAR, and RADAR in real-time. Zonal Architecture:

Acts as a high-speed link in new zonal wiring designs that reduce cable weight and complexity. Infotainment & Telematics:

Supporting ultra-high-definition displays and complex connected services. Vehicle Gateways: Managing data traffic between different vehicle domains. Usage Notes Control Protocol: Development boards using the BCM89890 often require the MDIO Clause 45 (C45)

protocol for register access, which is standard for 10G PHYs. It is designed to work with cable assemblies up to

long, supporting up to four in-line connectors, which is a standard requirement for large vehicle platforms.

More detailed technical documentation and drivers can be requested through the Broadcom Customer Support Portal or by contacting a local Broadcom sales representative. for this chip or compare it to other Broadcom automotive PHYs like the BCM89880? BCM89890 | Multigigabit Automotive Ethernet PHY with MACsec

BCM89890 | Multigigabit Automotive Ethernet PHY with MACsec. LS1046 Dual 10G XFI PHY MDIO problem - NXP Community

Hi， On my customized board, i have a Broadcom BCM89890 10g phy connected to XFI. 9 and a Marvell AQR113C 10g phy connected to XFI. NXP Community

Broadcom BCM89890 is a high-performance automotive Ethernet PHY

designed for next-generation vehicle architectures. It is notable as one of the first transceivers to comply with the IEEE 802.3ch standard

, supporting multi-gigabit speeds over a single shielded twisted-pair (STP) cable. Key Technical Specifications Multi-Gigabit Support : Delivers flexible data rates of 2.5G, 5G, and 10G Enhanced Security : Features integrated 802.1AE MACsec with 128/256-bit AES encryption to protect in-vehicle data. Interfaces : Supports high-speed XFI and PCIe interfaces for seamless connection to host SoCs or switches. Time Sensitivity : Includes PHY timestamping for IEEE 1588 / 802.1AS , making it suitable for synchronized automotive networks. Automotive Grade AEC-Q100 qualified

with low power consumption and stringent EMC compliance over STP. Primary Applications

The BCM89890 is specifically geared toward data-heavy automotive systems, including: ADAS & Autonomous Driving

: Managing high-bandwidth data from [Lidar, 4D Radar, and 4K camera systems](https://www.automotiveworld.com/news-releases/fit-showcases-multi-gig automotive-ethernet-cable-and-connector-solutions-at-designcon-2024/). Infotainment : Supporting high-resolution 4K displays and rear-seat entertainment. Zonal Architecture : Serving as a high-speed link for domain controllers and gateways Professional Assessment

The BCM89890 is a critical component for OEMs transitioning to Software-Defined Vehicles (SDVs)

. By providing 10Gbps capacity over a single pair of wires, it reduces cabling weight and complexity while meeting the security demands of modern connected cars. Its integration into media converters, such as those from A technical description (features, use cases, protocols) A

, allows for easy point-to-point testing and development in lab environments. pin compatibility with other BCM series or a comparison with standard Ethernet PHYs Vector TechDay Slides Hotel Caravelle October 12 - Scribd

Broadcom BCM89890 is a multigigabit Automotive Ethernet Physical Layer (PHY) transceiver. It is notable for being the world's first device compliant with the IEEE 802.3ch

standard, designed specifically to handle high-bandwidth data within modern vehicles. Core Technical Specifications Data Rates: Supports switchable speeds of 2.5 Gbps, 5 Gbps, and 10 Gbps (10G/5G/2.5GBASE-T1). Features integrated 802.1AE MACsec with 128/256-bit AES encryption and BroadR-Secure™ for hardware-based packet authentication. Interfaces:

Optimized for connecting to switch ICs or host SoCs using high-speed interfaces. Compliance: Fully compliant with IEEE 802.3ch and OPEN Alliance TC9 standards for single-pair Ethernet. Key Applications

The chip is primarily used in automotive zonal architectures and high-data-rate systems, including: ADAS & Autonomous Driving:

Connecting high-resolution 4K cameras, Lidar, and 4D radar sensors. Infotainment:

Supporting high-resolution displays and rear-seat entertainment systems.

Acting as a backbone for domain controllers and vehicle gateways. Yahoo Finance Related Hardware & Tools

Because it is a specialized industrial component, the BCM89890 is often found in testing and conversion hardware: Media Converters: Devices like the Inno-Maker T1TX

use the BCM89890 to convert automotive T1 signals to standard RJ45/SFP+ Ethernet for testing with PCs. Network Interfaces: Vector VNmodule60

integrates this chip to provide 10 Gbit/s ports for automotive network simulation and analysis. Optical Links: Systems like the optoLAN-10GBASE-T1

utilize it for EMC functional testing by converting electrical signals to optical fiber to avoid electromagnetic interference. Automotive Ethernet PHYs optoLAN 10GBASE-T1 BCM89890

Title: Under the Hood with the BCM89890: Why This Automotive Ethernet PHY is a Game Changer for In-Vehicle Networking

Subtitle: Unlocking single-pair, high-speed data for ADAS, infotainment, and the software-defined car.

If you’ve been following the shift toward software-defined vehicles (SDVs) and zonal architectures, you’ve likely heard the buzz about Automotive Ethernet. But talk is cheap—literally, copper is cheap, and that’s exactly where the Broadcom BCM89890 shines.

Let’s break down why this particular PHY (Physical Layer Transceiver) is popping up on more schematics and why it matters for the future of your car.

1. Magnetics and Common Mode Chokes

Unlike traditional Ethernet, 100BASE-T1 does not require isolation magnetics in the same way. However, the BCM89890 still requires a Common Mode Choke (CMC) on the MDI (Media Dependent Interface) lines to suppress EMI. Broadcom’s reference designs typically specify a specific CMC part number from TDK or Murata.

Where You’ll Find It

Introduction

In the rapidly evolving landscape of Automotive Ethernet, Broadcom (a division of Avago Technologies) has consistently set the industry standard. The BCM89890 is part of the Broadcom BroadR-Reach family, designed to facilitate high-speed data transfer within vehicles while meeting the stringent electromagnetic interference (EMI) requirements of the automotive industry.

It is essentially a high-performance, low-power transceiver that acts as the bridge between the digital world of the ECU (Electronic Control Unit) and the physical wiring of the car.

PCB Layout