Broadcom Inc. announced an automotive AEC-Q100 compliant multigigabit Ethernet PHY transceiver family and a multilayer Ethernet switch family with 802.1AE MACsec support for telematics applications.

Novel devices

Broadcom Inc. is a global technology leader that designs, develops, and supplies a broad range of semiconductor and infrastructure software solutions. 

Recently Broadcom released new device families designed to address the growing need for in-vehicle data security, high bandwidth networking with flexible multigigabit interfaces, and time-sensitive networking (TSN).

Broadcom released a novel switch and transceiver for automotive applications
The Broadcom® BCM8957X device

The BCM8989X is the industry’s first IEEE 802.3ch standard-compliant automotive 10G/5G/2.5GBASE-T1 MACsec (Media Access Control Security) PHY, while the BCM8957X is the first automotive L2/L3 switch with MACsec support and PHY interfaces allowing data rates of 10 Mbps to 10 Gbps.


As Ethernet currently a networking standard for automotive applications, MACsec has become an important solution to help secure data communications between Ethernet nodes in a car and guard against cyber-attacks and data breaches.

Leveraging Broadcom’s proven MACsec technology from high-speed networking products, the BCM8989X and BCM8957X are equipped with state-of-the-art MACsec that can be configured to support high-speed interconnects for in-vehicle networking.

In addition, these devices come with built-in BroadR-Secure™ functionality to further enhance data transmission security by enabling customers to authenticate each packet using secure keys.

Applications: in-vehicle communication

New technologies such as 5G and artificial intelligence (AI) influence vehicle telematics. As a result, the amount of data transmitted both inside and outside of the connected car dramatically increases year to year.

High bandwidth networking will be needed to enable a growing number of sensors and high-resolution cameras. Low latency or real-time communications will play a key role in addressing time-sensitive applications like safety-critical vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications. 

As such, multigigabit Ethernet PHYs and high bandwidth multilayer switches are essential in handling the increased data traffic while being able to securely transfer large amounts of critical data across the network for accurate real-time monitoring.

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