The BCM89890 appears to be related to a Broadcom chip, which is a company known for producing a wide range of semiconductor and software solutions. Broadcom chips are used in various applications, including networking, storage, and broadband access.
4. Diagnostic Features
Unlike consumer PHYs, the BCM89890 includes advanced link diagnostics:
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)
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:
: Supporting 4K displays and high-speed external connectivity. Smart Mobility
3. Advanced Cable Diagnostics (ACD)
One of the most powerful debugging features of the BCM89890 is its on-chip Time Domain Reflectometry (TDR). Engineers can issue a command to the PHY, which then sends a test pulse down the cable to locate:
Automotive Grade: AEC-Q100 qualified with specialized noise cancellation and transmission jitter protocols to meet stringent EMI/EMC requirements.
: 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
4. Industrial Automation While primarily automotive, the robustness of the BCM89890 makes it suitable for industrial robotics and automation factories where single-pair cabling reduces cable drag on moving arms.