Bcm89890 !!link!!

The BCM89890 is a specialized Broadcom semiconductor—specifically the industry's first IEEE 802.3ch-compliant automotive multigigabit Ethernet PHY [5.7, 5.16]. It is designed for high-performance automotive networking, supporting data rates of 2.5G, 5G, and 10G over a single shielded twisted-pair cable [5.8, 5.16]. Core Technical Specifications

use the BCM89890 in media converters for point-to-point data transmission without delay or packet modification. It has also been demonstrated in evaluation boards using specialized FoxNet GII bcm89890

The BCM89890 performs all physical layer (PHY) functions for 10G/5G/2.5GBASE-T1 encoded packets, specifically optimized for the harsh automotive environment. Standards Compliance: Fully compliant with IEEE 802.3ch and qualified to automotive standards. Features integrated 802.1AE MACsec with 128/256-bit AES encryption and BroadR-Secure™ for packet authentication, guarding against cyberattacks. Interfaces: Supports high-speed It has also been demonstrated in evaluation boards

Conclusion

The BCM89890 is more than just a PHY chip; it is a foundational component of the software-defined vehicle. By enabling robust, low-cost, and lightweight 100 Mbps connectivity, it allows automakers to break free from legacy bus architectures (CAN/LIN) and move toward a unified IP-based network. and lightweight 100 Mbps connectivity