AUTOMOTIVE ETHERNET CONNECTOR SOFTWARE
AUTOMOTIVE ETHERNET CONNECTOR MAC

100Base-T1 uses MII, RMII, RGMII, or SGMII for routing between the MAC on a CPU/FPGA/MCU, switch, and PHY on the board. Routing between MAC, PHY, and switches uses MII or one of its variants. This is great for car designers and gas mileage, but it puts a greater onus on PCB designers to consider the higher data rates during layout and routing.

It also reduces the total hardware weight in the vehicle. This then removes the need for Ethernet/CAN and other gateways for interfacing between different protocols. The intrepid automotive PCB designer will also need to adapt to working at these higher data rates over differential channels.Ĭhanging everything to automotive Ethernet under 100Base-T1 or higher standards also eliminates the need for CAN, LIN, and other protocols within the vehicle. Companies like Molex are already releasing products like shielded connectors/cables designed for 20 Gbps PHY in automotive Ethernet. The move to faster data rates brings greater signal integrity requirements, power integrity, and EMI/EMC. Automotive Ethernet system design and arrangement in a vehicle. The IEEE 802.3 standards group is already preparing for speeds beyond 10G Ethernet for in-vehicle networking. Still, the most advanced vehicles with multiple cameras, radar modules, GPUs, lidar/sonar, and other sensors will rely on 2.5, 5, or 10 Gbps automotive Ethernet. The 1000Base-TBase-RH standards specify two physical layers that can be used within automotive Ethernet. With sensor data being analyzed and used within complex AI/ML models, autonomous cars require even more data throughput.

Going from 1 Mbps (high end of CAN networks) to 100 Mbps was sufficient to provide enough data throughput for various features in new cars, particularly live video transmission (e.g., backup cameras). 62.5 MHz in 100Base-T) and advanced encoding to reduce the required link transmission capacity. It uses staggered PAM-3 signaling (27 MHz vs. The IEEE 802.3bw standard (100Base-T1 BroadR-Reach) is a 100 Mbps automotive Ethernet standard used in newer automobiles as it provides longer reach while still satisfying vehicle EMI metrics. At some point, digital CAN networks can’t provide the throughput required to orchestrate so many different portions of a system. ADAS systems, ECUs, lane assist, pedestrian detection, and many other features all exchange plenty of data.

AUTOMOTIVE ETHERNET CONNECTOR SOFTWARE

Greater Data Rates for ADAS and DriverlessĬurrent automobiles are more software-driven than ever before, and all that embedded software (and hardware) needs to transfer a lot of data. Here are some of the current and upcoming design challenges in automotive Ethernet and how these filter down to PCBs for new vehicles. Ethernet is now the backbone of in-vehicle networking, and designers will need to accommodate higher data rates under the automotive Ethernet standards for new designs. The reliance on more sensors, more data, and more processing power puts greater reliance on high-speed data transfer protocols within a vehicle. Anyone following the auto industry knows that modern vehicles are moving computers, and they now leverage more data than ever before. Ethernet networking in cars makes this old yet powerful technology mobile and provides an easy way to transfer data around a vehicle quickly.

Ethernet has been around for over 40 years, but it hasn’t made headway outside the office or industrial settings until recently.

Automotive ethernet connector