Providing detailed information on powered device in system for supplying power over communication link
Patent Information
- Authority / Receiving Office
- US · United States
- Current Assignee / Owner
- ANALOG DEVICES INT UNLTD
- Publication Date
- 2007-06-14
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
[0001] This application claims priority of and incorporates by reference provisional U.S. patent application No. 60 / 749,048 filed on Dec. 12, 2005, and entitled “SYSTEM AND METHOD FOR SUPPORTING ADVANCED POWER OVER ETHERNET SYSTEM.”TECHNICAL FIELD
[0002] This disclosure relates to power supply systems, and more particularly, to circuitry and methodology for providing information relating to a powered device coupled to a communication link, such as an Ethernet link. BACKGROUND ART
[0003] Over the years, Ethernet has become the most commonly used method for local area networking. The IEEE 802.3 group, the originator of the Ethernet standard, has developed an extension to the standard, known as IEEE 802.3af, that defines supplying power over Ethernet cabling. The IEEE 802.3af standard defines a Power over Ethernet (PoE) system that involves delivering power over unshielded twisted-pair wiring from a Power Sourcing Equipment (PSE) to a Powered Device (PD) located at opposite sides of a ...