From rear-seat entertainment systems playing 4K video to over-the-air (OTA) software updates, the demand for bandwidth in the vehicle's cabin is insatiable. The BCM89890 can serve as a backbone link for infotainment systems and high-definition displays.
The BCM89890 operates on a single 3.3V supply, but it has internal PLLs that need clean power. Use a dedicated LDO or a pi-filter from the vehicle’s main 3.3V rail.
Modern vehicles are moving from a domain-centric topology (e.g., one module for chassis, one for body) to a (e.g., left-front zone, right-front zone). In a zonal ECU, the BCM89890 serves as the edge PHY, aggregating sensor data from legacy CAN/I2C buses and converting it to Ethernet for backhaul to the central compute. Multiple BCM89890 devices often surround a Broadcom or Marvell switch chip. bcm89890
Powering 4D Radar and Lidar systems.
: Built to survive wide temperature fluctuations typical of engine bays and cabin interiors. From rear-seat entertainment systems playing 4K video to
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
For engineers, the BCM89890 offers a compelling combination: automotive-grade ruggedness, industry-leading EMI performance, and powerful diagnostic features like TDR cable analysis. For OEMs, it reduces harness weight by up to 30% compared to standard Ethernet, directly improving EV range. Use a dedicated LDO or a pi-filter from
While the BCM89890 uses a 3.3V supply, the core logic may require 1.2V internally. Use the recommended Broadcom power management IC or a high-quality LDO with proper sequencing to avoid latch-up.
For time-critical autonomous driving maneuvers (such as automated braking and sensor fusion), the transceiver implements precision clock features:
Supports IEEE 1588 and 802.1AS (Precision Time Protocol), which is essential for time-sensitive networking (TSN) applications like synchronized sensor fusion.