1000BASE-T1 Automotive Ethernet Solution
04 Aug 2021
Ethernet has long been adapted by the automotive industry, such as in 1Mbps Controller Area Network (CAN) for ECU. Even while the latest infotainment system is adapting 150Mbp data rate MOST structure, Ethernet is still highly expected with its great potential.
One of the biggest challenges EE architectures are facing is the integration of systems such as high-resolution cameras, radar, LiDAR, and ADAS. The demand of high bandwidth and multiple systems operation poses a huge challenge to communication interface.
Bandwidth Requirements of Automotive Applications
Advantages of Automotive Ethernet
To solve the issues of electromagnetic interference, cost and weight of Ethernet, Institute of Electrical and Electronics Engineers (IEEE) has established 100BaseT1 (802.3bw) and 1000BaseT1 (802.3bp) as the standard for automotive Ethernet. OPEN Alliance SIG members such as Broadcom, BMW and other major players are putting effort into the promotion of automotive Ethernet applications.
Compared to traditional Ethernet technology, 100BaseT1 and 1000BaseT1 use a single pair of unshielded twisted cables, which significantly reduces up to 80% of cost and 30% of cable weight while complying with automotive electromagnetic radiation regulations. With data rates of up to 100Mbps or 1Gbps, automotive Ethernet meets the high-speed data transmission needs of digital radar, LiDAR in future self-driving cars
Moving with the trend, Nextron has joined the SPE Industrial Partner Network aand teamed up with global leading brands to promote and improve the ecosystem of automotive Ethernet, a.k.a Single Pair Ethernet (SPE). By leveraging on our capabilities in high-speed signal processing and mechanism design, we first invested in the 1000Base T1 architecture and launched our 1Gbit/s SPE connector and cable solution.
Nextron’s SPE Solution
(Download our SPE Bayonet Type Catalogue for detailed information)
Nextron’s SPE products are one of the very few 4 way off-the-shelf SPE circular connectors available on the market. It can support up to 1000Base-T1 (1Gbit/s) with 15m UTP unshielded/40m STP shielded cable.
SPE products could pass electromagnetic compatibility (EMC) tests of vehicles and meet high bandwidth requirements of LiDAR and radar of ADAS.
Nextron’s M8 4 Way comply with IEEE 802.3bp and IEC 63171-6 standards.
Endurance: 500 mating cycles
Insertion force: 50N max
- Frequency: 10 Hz - 500 Hz.
- Amplitude: 0.35 mm. Sweep rate 1 octave/min.
- Acceleration: 50 m/s.
- Duration: 2 hours per axis, total 6 hours
- Axes: x, y, z. Standard atmospheric conditions. (Connectors in mated and locked position)
Voltage: 60V DC
Contact resistance: 20mΩ
Withstanding voltage: 1000V DC contact to contact; 1500V DC contact to shield
Insulation resistance: 1000 mΩ
Rated current: 8A per pin for Power; 4A per pin for Signal
Characteristic resistance: 100Ω±10%
Waterproof rating: IP67 (mated)