博通BroadR-Reach——车载以太网物理层技术
博主所查到的中文资料或论文中，对于“可减少高达80%的车内连接成本和高达30%的车内布线重量。”这句话均没有表明出处。经过查证后，发现来自于OPEN ALLIANCE联盟官方网站。网站是这样描述的：
一、Overview/Technology
About OPEN Alliance
The OPEN Alliance (One-Pair Ether-Net) Inc. is a non-profit, open industry alliance of mainly automotive industry and technology providers collaborating to encourage wide scale adoption of Ethernet-based networks as the standard in automotive networking applications.
Member Companies
The member companies of the OPEN Alliance Inc. take advantage of the scalability and flexibility of Ethernet to allow for cost effective communication networks in vehicles with reduced complexity. An Ethernet-based communication network is also a key infrastructure element for future customer functions like autonomous driving and the connected car. Since its inception, the OPEN Alliance Inc. has surged to more than 340 members.
Key Goals
- Enable the deployment of the existing IEEE 100BASE-T1,1000BASE-T1 and 1000BASE-RH physical layer specifications with complementing specifications for conformance and interoperability.
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Complete the eco-system further with requirement and test specifications for harnesses, switches, ECUs, and additional functionalities.
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Encourage and support the development of new physical layer solutions in a standards setting organization.
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Continuously identify and address gaps related to the implementation of Ethernet-based communication in automotive.
The Technology
Interest in one pair Ethernet technology has grown dramatically as the automotive industry accelerates adoption of Ethernet-based networks.
Early adoption of the BroadR-Reach™ Ethernet technology enabled multiple in-vehicle systems (such as infotainment, automated driver assistance and on board-diagnostics) to demonstrate simultaneous access to information over a single unshielded twisted pair cable. The completion of the IEEE automotive Ethernet standards (100BASE-T1,1000BASE-T1 and 1000BASE-RH) built upon that early adoption effort and established automotive Ethernet internationally.
Moving from shared medium bus topologies to a switched Ethernet network provides flexibility and freedom in the implementation of the in-vehicle EE architecture and connectivity to the outside world. Automotive qualified Ethernet technology is engineered to meet the stringent in-vehicle requirements of the automotive industry.
Automotive Ethernet Technology
As consumer demand for in-vehicle connectivity and advanced driver assistance (ADAS) continues to grow, the automotive industry is under constant pressure to deliver competitive, innovative features while minimizing cost. Automotive Ethernet technology allows multiple in-vehicle systems to simultaneously access information over a single unshielded twisted pair cable. By eliminating cumbersome, shielded cabling, automotive manufacturers can significantly reduce connectivity costs and cabling weight.
BroadR-Reach™ is a trademark of Broadcom Limited in the U.S. and/or other countries
二、Benifits
Benefits at a Glance
三、Use Cases
Optimized for a Broad Spectrum of ADAS and Infotainment Applications
四、Membership
Promoter and Adopter Options
Membership in the OPEN Alliance is optimized for businesses in the automotive market. An understanding of Ethernet connectivity in automotive is a necessity for companies that are interested in establishing Automotive Ethernet as the technology of choice for next generation in-vehicle networking.
Members should be willing and able to help drive and support new interoperability requirements, third party testing, certification procedures and higher data rate specification requirements.
Membership Levels: Promoter and Adopter
Promoter and Adopter members have the same rights in respect to participating in and contributing to the OPEN Alliance technical committees and have access to non-public documents. Promoters have the additional right and the duty to hold a seat on the Board of Directors.
How much does it cost to join the OPEN Alliance?
Adopter members must pay a yearly membership fee of $1500USD.
How can our company become a member of the OPEN Alliance?
- Complete and return an executed Adopter Membership agreement
- Provide us with key contact information for the OPEN Alliance Causeway platform (Starting January 16, 2021 Adopters will have unlimited users per company)
- Submit the annual $1,500USD membership fee
Please return the signed agreement to OPEN Alliance Administration. Once received, OPEN Alliance will send an invoice for membership dues, and once paid membership rights will be given.
Organizational documents for download:
- Articles of Incorporation
- OPEN Alliance Bylaws and Antitrust Guidelines
- OPEN Alliance Member Agreement
- OPEN Alliance Work Group Participation Policy
- OPEN Alliance IPR Policy
- OPEN Alliance Operating Procedures
五、Specs
The following specifications are available:
Please click on this link if you want to download the specifications
10Mbit/s specifications
- 10BASE-T1x MAC-PHY Serial Interface Specification
- 10BASE-T1S Advanced PHY Features
- 10BASE-T1S PLCA Management Registers
100Mbit/s specifications
- System Implementation Specification
- Advanced diagnostic features for 100BASE-T1 Automotive Ethernet PHYs
- CMC Test Specification
- Interoperability Test Suite
- PHY Control Test Suite
- PCS Test Suite
- Specifications for Communication Channel
- Transceiver EMC Test Specification
- Physical Media Attachment Test Suite
- Wake-Up & Sleep specifications
- IEEE 100 BASE-T1 EMC Test specification for ESD suppression devices
- OA 100Base-T1 ESD Device Test Specification
- OA 100Base-T1 CMC Test Specification
- OA 100Base-T1 Transceiver EMC Specification
1000Mbit/s specifications
- Advanced Diagnostic features for 1000BASE-T1 Automotive Ethernet PHYs
- IEEE 1000BASE-T1 System Implementation Specification
- 1000BASE-T1 Interoperability Test Suite
- OPEN Alliance RGMII EPL Recommendation for Automotive Application
- Gigabit Ethernet over Plastic Optical Fibre (GEPOF) Specifications
- EMC Test Specification for CMC
- Channel and Components Requirements for 1000BASE-T1 Link Segment Type A (UTP)
- OA 1000Base-T1 ESD Device Test Specification
- OA 1000Base-T1 CMC Test Specification
- OA 1000Base-T1 Transceiver EMC Specification
- Channel and Components Requirements for 1000BASE-T1 Link Segment Type A (STP)
- IEEE 1000BASE-T1 Physical Media Attachment Test Suite
Speed independent
- Test Process - ECU and Network test
- Ethernet ECU Test Specification
- Ethernet Switch Requirements
- Ethernet Switch Test Specification
六、Forcast
Gartner
OPEN Alliance Ethernet Study 2014 Forecast Data
