With 1 Gbps bandwidth, the BCM89885 enables real-time data transfer for high-definition cameras, LiDAR, and radar systems required for autonomous driving. Enhanced Reliability and Security
When compared to standard industrial or older Broadcom automotive transceivers, the BCM89885 stands out in three distinct areas:
Designing with SGMII means fewer trace lines on multi-layered PCBs, freeing up space for designers to implement more dense circuit topologies. bcm89885
The BCM89885 is a member of Broadcom's BCM89800 series of Ethernet switches, which are designed to provide high-density, low-latency, and feature-rich connectivity for a wide range of applications, including data centers, enterprise networks, and industrial automation. The BCM89885 is a 48-port Gigabit Ethernet (GbE) switch with a rich set of features that make it an ideal choice for network architects and engineers.
The BCM89885 is built on Proven Digital-Signal Processor (DSP) technology, allowing it to deliver high reliability over existing single twisted-pair automotive cables. Specification 1000 Mbps / 100 Mbps (Auto-negotiation) Standards 1000BASE-T1 (IEEE 802.3bp), 100BASE-T1 (IEEE 802.3bw) Interface Operating Temp -40°C to +125°C (Grade 1) Package 40-pin WQFN (6mm × 6mm) Security BroadR-Secure™ Capable (Optional) Applications in Modern Vehicles With 1 Gbps bandwidth, the BCM89885 enables real-time
While detailed internal registers often require an NDA, its primary role and architecture include:
Enabling high-bandwidth streaming and connectivity for cockpit displays and rear-seat entertainment. The BCM89885 is a 48-port Gigabit Ethernet (GbE)
The device is fundamentally designed to enable high-speed, full-duplex data communication over a single, lightweight, . This is a significant advancement over traditional automotive wiring, which uses heavier, more expensive shielded cabling. By leveraging the 1000BASE-T1 standard (IEEE 802.3bp), the BCM89885 can deliver Gigabit (1 Gbps) Ethernet speeds, providing the bandwidth necessary to support the data-intensive features found in next-generation vehicles, such as Advanced Driver-Assistance Systems (ADAS), high-resolution infotainment, and autonomous driving systems.
: It acts as a physical layer (PHY) transceiver that encodes Ethernet packets for transmission over a single pair of unshielded twisted-pair (UTP) cable.
One of the biggest pain points in automotive Ethernet has been power management. The BCM89888 fully supports (Sleep/Wake specification for 1000BASE-T1). This allows the PHY to enter a near-zero-power sleep state (typically < 20 µA) and wake up via a dedicated wake pulse (WUP) or via normal link activity. For electric vehicles, where every milliwatt impacts range, this feature is critical.