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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Background</title><meta name="generator" content="DocBook XSL Stylesheets V1.76.1"><meta name="keywords" content="Intellon, Atheros, Qualcomm, HomePlug, powerline, communications, INT6000, INT6300, INT6400, AR7400, AR7420"><link rel="home" href="index.html" title="Qualcomm Atheros Open Powerline Toolkit"><link rel="up" href="ch01.html" title="Chapter 1.  Overview"><link rel="prev" href="ch01.html" title="Chapter 1.  Overview"><link rel="next" href="ch01s03.html" title="Toolkit Distribution"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">
			Background 
			</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch01.html">Prev</a> </td><th width="60%" align="center">Chapter 1. 
		Overview 
		</th><td width="20%" align="right"> <a accesskey="n" href="ch01s03.html">Next</a></td></tr></table><hr></div><div class="section" title="Background"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="overview-background"></a>
			Background 
			</h2></div></div></div><p>
			<span class="trademark">HomePlug</span>® AV is an industry standard protocol for powerline communications developed by the <a class="ulink" href="http://www.homeplug.org/home" target="_top">HomePlug Powerline Alliance</a>. Qualcomm Atheros manufactures a family of chipsets that conform to that standard and have MII, UART and SPI host interfaces. The <span class="productname">INT6x00</span>™ and <span class="productname">AR7x00</span>™ series are flagship members of that chipset family. The principle difference between the chipsets is their boot method, cost and speed. The <span class="trademark">INT6000</span>™ requires onboard NVRAM but the <span class="productname">INT6300</span>™, <span class="productname">INT6400</span>™ and <span class="productname">AR7400</span>™ do not. 
			</p><p>
			The <span class="trademark">HomePlug</span>® AV protocol is based on IEEE-802.3, has ethertype <code class="constant">0x88E1</code> and uses special message formats. A subset of those message formats is reserved for each chipset vendor to define their own message formats. Qualcomm Atheros uses this vendor-specific subset to communicate between host processors and Qualcomm Atheros devices. This toolkit uses Qualcomm Atheros vendor-specific message formats to communicates with Qualcomm Atheros devices. It also understands Qualcomm Atheros firmware and configuration file formats. 
			</p><p>
			This toolkit sends and receives Qualcomm Atheros vendor-specific messages but not generic <span class="trademark">HomePlug</span>® AV messages. Qualcomm Atheros vendor-specific management message formats are described in the Qualcomm Atheros <em class="citetitle"><span class="trademark">HomePlug</span>® AV Firmware Technical Reference Manual</em>. If you do not have a copy of this document then you may request one from Qualcomm Atheros.
			</p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch01.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch01.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ch01s03.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 1. 
		Overview 
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			Toolkit Distribution
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