1826994

IEEE 802.3af-2003

IEEEE Standard for Information Technology - Telecommunications and Information Exchange Between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications - Data Terminal Equipment (DTE) Power Via Media Dependent Interface (MDI)

Amendment by IEEE , 06/17/2003

This document is an amendment. View the base document.

View all product details

Most Recent

Track It

Language:
    • Available Formats
    • Options
    • Availability
    • Priced From ( in USD )

Customers Who Bought This Also Bought

 

About This Item

 

Full Description

Scope

Define methodology for the provision of power via balanced cabling to connected Data Terminal Equipment with 802.3 interfaces. The amount of power will be limited by cabling physics and regulatory considerations. Compatibility with existing equipment will be considered.

Purpose

To provide power for a new class of devices with 802.3 interfaces enabled by progress in silicon technology. These devices are characterized by low power requirements and LAN connectivity.

Abstract

Amendment Standard - Superseded. This amendment is based on the current edition of IEEE Std 802.3-2002 plus changes incorporated by IEEE Std 802.3ae-2002. Abstract: Support for optionally powering a 10BASE-T, 100BASE-TX or 1000BASE-T DTE device via the Power Interface (PI) using physical layers defined in Clauses 14, 25, and 40. The Power Sourcing Equipment (PSE) is located at an end point or mid-span, separate from and between the MDIs, and provides power to the Powered Device (PD) over the Link Section. The PSE detection protocol distinguishes a compatible PD from non-compatible devices and precludes the application of power and possible damage to non-compatible devices. The PSE monitors the Maintain Power Signature (MPS)and removes power when it is no longer requested or required. Optional management function requirements are specified.
 

Product Details

Published:
06/17/2003
ISBN(s):
9780738136974
Number of Pages:
133
File Size:
1 file , 960 KB
Product Code(s):
STDSU95132
Note:
This product is unavailable in Russia, Belarus