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While the BCM89890 is a 100Mbps device, it is often deployed in mixed-speed networks. Many next-generation designs pair it with a 1000BASE-T1 (1 Gbps) PHY for backbone links while keeping the BCM89890 for leaf nodes (door handles, window lifters, seat controllers). This provides a graceful upgrade path: the central switch can support both speeds, and the BCM89890 remains viable for low-bandwidth, cost-sensitive endpoints well into the 2030s.

The is a pioneering multigigabit Ethernet transceiver designed specifically for the rigorous demands of modern automotive networking. As the industry's first IEEE 802.3ch compliant device, it enables high-speed data transmission of up to 10 Gbps over a single pair of shielded twisted-pair (STP) cables. bcm89890

Acting as the communication link for zone controllers in engine bays or door cavities, allowing for reduced wiring weight and cost. The Future of Connectivity BCM89890 | Multigigabit Automotive Ethernet PHY with MACsec While the BCM89890 is a 100Mbps device, it