Automotive Ethernet: An Accelerator for Smart Car Communications

summary:

Today, with the rapid development of intelligent automobile technology, in-vehicle networks have become an important foundation for automobile intelligence. Imagine if every component of a car is an information node, and a large amount of data needs to be exchanged instantly and accurately between them, then a high-speed and efficient network becomes an indispensable infrastructure. This is where in-vehicle Ethernet technology comes in.

1. Automotive Ethernet

1. Evolution and Challenges of In-Vehicle Networks

The evolution of automotive electronic and electrical architectures has always revolved around powerful communication architectures and vehicle-level computing platforms. From simple communication on the LIN bus to efficient data exchange on the CAN bus, and then to the application of high-speed transmission technologies such as FlexRay and MOST, automotive communication technologies have made continuous breakthroughs. However, with the rapid development of technologies such as intelligent driving and Internet of Vehicles, the challenges faced by vehicle networks are becoming increasingly severe. The surge in data volume, the demand for transmission speed, and the higher requirements for real-time performance have all posed new challenges to vehicle networks.

2. A new chapter in automotive Ethernet

To meet these challenges, the 10GBase-T1 standard was launched in 2017 and officially released in 2020. This standard supports data transmission at symmetrical rates of 2.5 Gbit/s, 5 Gbit/s, and 10 Gbit/s. Compared with the previous generation of 100 Mbit/s and 1 Gbit/s technologies, Multi-G technology provides higher rates and greater Shannon capacity. This means faster data transmission speeds, stronger anti-interference performance, and higher security performance.

10GBase-T1 uses STP (Shielded-Twisted Pair) cables. Compared with traditional UTP (Unshielded-Twisted Pair) cables, the shielding layer of STP cables greatly enhances the anti-interference performance. In addition, 10GBase-T1 has also made innovations in channel algorithms , using the PAM4 modulation format to improve the signal-to-noise ratio per unit frequency, allowing the system to use a higher modulation order.

NETLion 10G

In line with this trend, Kangmou has introduced NETLion 10G, a development tool designed for 2.5/5/10GBASE-T1 networks. It can not only help engineers record and analyze data traffic, but also convert the 2.5/5/10GBASE-T1 physical layer into 2.5/5/10GBASE-T Ethernet signals , greatly facilitating the development and testing of vehicle-mounted networks.

3. Dual-mode design

The uniqueness of NETLion 10G lies in its dual-mode design.

1. Dual Media Converter Mode

In dual media converter mode, it can convert two 2.5/5/10GBASE-T1 signals into 2.5/5/10GBASE-T Ethernet signals, providing two independent bidirectional conversion channels.

2. Network TAP mode

In network TAP mode, it is able to decouple the data from the 2.5/5/10GBASE-T1 line port and transmit it to the 2.5/5/10GBASE-T1 and BASE-T interfaces without interfering with the communication in the network.

4. Product Highlights

1. Physical layer conversion

The design of NETLion 10G fully considers the characteristics of the 10GBase-T1 standard. Through its advanced physical layer conversion technology, it realizes efficient conversion of 2.5/5/10GBASE-T1 signals to Ethernet, ensuring high-speed data transmission in automotive networks.

data transfer and seamless communication.

2. User customized configuration

Equipped with flexible DIP switch configuration, it allows users to easily set the operation mode according to specific network requirements, including media converter mode and network TAP mode to adapt to different testing and development scenarios.

3. Intelligent network negotiation

NETLion 10G supports auto-negotiation and auto-detection modes, and can intelligently negotiate the best transmission rate and configuration with other devices in the network, thus ensuring the stability and efficiency of the network.

5. Application Value

The application value of NETLion 10G is reflected in many aspects.

1. Real-time monitoring

NETLion 10G supports engineers to comprehensively test the performance of in-vehicle Ethernet during the development phase, monitor data traffic in real time, quickly locate and resolve potential problems, and ensure network stability and security.

2. Multi-scenario application

Whether it is basic testing in harsh environments or advanced function development in actual vehicles, NETLion 10G's flexible configuration capabilities can provide strong support.

3. Smooth upgrade

With the advancement of autonomous driving technology, the forward-looking design of NETLion 10G ensures the ability of in-vehicle networks to face future technological upgrades and expansions, safeguarding the future development of smart travel.

With the promotion and application of the 10GBase-T1 standard, the performance of automotive Ethernet will be significantly improved. As a product of this standard, NETLion 10G can not only meet the needs of high-speed data transmission, but also ensure the stability and reliability of data transmission through its advanced technology and functions.