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<body><center><a href="http://www.interfacebus.com"><img src="interfacebus_new_logo.png" width="440" height="180" alt="interfacebus.com" title="" align="top" /></a><h1><font size="6"><b>Serial ATA Bus</b></font></h1><img src="sata_logo.png" width="120" height="103" alt="SATA Logo" title="" /></center><p style="text-align:center"><b>Serial ATA (Advanced Technology Attachment)</b></p><br/><br/><p style="text-align:center">      [<a href="http://www.interfacebus.com/Design_Connector_Serial_ATA.html#a"><b>SATA      Description</b></a>] [<a href=      "http://www.interfacebus.com/Design_Connector_Serial_ATA.html#b"><b>Serial      ATA Jitter</b></a>] [<a href=      "http://www.interfacebus.com/Design_Connector_Serial_ATA.html#c"><b>Interface      ICs</b></a>]<br/>      [<a href="http://www.interfacebus.com/Design_Connector_Serial_ATA.html#d"><b>SATA      Connector/Cable</b></a>] [<b>SATA Pinout</b>] [<a href=      "http://www.interfacebus.com/Design_Connector_IDE.html"><b>PATA</b></a>]<br/>      [<a href="http://www.interfacebus.com/" title=      "Site Index Page"><b>Home</b></a>]</p>	<center><form action="http://www.google.com" id="cse-search-box">  <div>    <input type="hidden" name="cx" value="partner-pub-4308118663291870:9482193981" />    <input type="hidden" name="ie" value="UTF-8" />    <input type="text" name="q" size="45" />    <input type="submit" name="sa" value="Search" />  </div></form>
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<h2><font size="5"><b>Serial ATA Signal Assignments</b></font></h2>
<table summary="Serial ATA Cabling Diagram"><tr><td><img src="SATA-drive-cabling.jpg" alt="SATA Unit to Cable Interface" /><br/><b>SATA Cabling Diagram</b></td><td><p><b>SATA Interface</b><br/>      The Serial ATA [SATA] bus is defined over two separate connectors,<br/> 	  one connector for the data lines and one for the power lines [shown left].<br/> 	  A Serial ATA      Hard drive may also have a third connector for legacy <a href=      "http://www.interfacebus.com/Design_Connector_IDE.html" title=      "IDE Connector Pin Out and Parallel ATA Bus Description">PATA</a> power      connections.<br/> 	   The PATA power connector may be used in instead of the SATA      power cable<br/>  to supply a connection which is more rugged and reliable then the      SATA-1 power connection.<br/>	  The PATA interface is not visible in the diagram.</p><p>The Serial ATA interface cable consists of four conductors in two differential pairs,<br/> plus three ground connections.<br/>The cable size may be 30 to 26 AWG with a maximum length of one meter (39.37 inches).</p></td></tr> </table><br/><br/>	<center><script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script><!-- 728x90 --><ins class="adsbygoogle"     style="display:inline-block;width:728px;height:90px"     data-ad-client="ca-pub-4308118663291870"     data-ad-slot="8490830536"></ins><script>(adsbygoogle = window.adsbygoogle || []).push({});</script></center><br/><br/>
<img src="sata_pata.gif" width="324" height="116" alt="SATA PATA connectors" title="" /><br/><h3>SATA Data pinout</h3><table class="norm" border="1" align="center" summary="SATA Bus Pinout, Connector Pin Out and Signal names"><caption><b>SATA PinOut, Data</b></caption><tr>        <td><font size="2"><b>Pin #</b></font></td>        <td><font size="2"><b>Signal name</b></font></td>        <td><font size="2"><b>Signal Description</b></font></td>      </tr>      <tr>        <td><b>1</b></td>        <td>GND</td>        <td>Ground</td>      </tr>      <tr>        <td><b>2</b></td>        <td>A+</td>        <td>Transmit +</td>      </tr>      <tr>        <td><b>3</b></td>        <td>A-</td>        <td>Transmit -</td>      </tr>      <tr>        <td><b>4</b></td>        <td>GND</td>        <td>Ground</td>      </tr>      <tr>        <td><b>5</b></td>        <td>B-</td>        <td>Receive -</td>      </tr>      <tr>        <td><b>6</b></td>        <td>B+</td>        <td>Receive +</td>      </tr>      <tr>        <td><b>7</b></td>        <td>GND</td>        <td>Ground</td></tr></table><br/><img src="sata_pinout.jpg" width="440" height="268" alt="SATA pinout" title="" />
<h3>SATA Power pinout</h3><table class="norm" border="1" align="center" summary="SATA Power Pinout, Connector Pin Out and Signal names"><caption><b>SATA PinOut, Power</b></caption><tr>        <td><font size="2"><b>Pin #</b></font></td>        <td><font size="2"><b>Signal name</b></font></td>        <td><font size="2"><b>Signal Description</b></font></td>      </tr>      <tr>        <td><b>1</b></td>        <td>V33</td>        <td>3.3v Power</td>      </tr>      <tr>        <td><b>2</b></td>        <td>V33</td>        <td>3.3v Power</td>      </tr>      <tr>        <td><b>3</b></td>        <td>V33</td>        <td>3.3v Power, Pre-charge, 2nd mate</td>      </tr>      <tr>        <td><b>4</b></td>        <td>Ground</td>        <td>1st Mate</td>      </tr>      <tr>        <td><b>5</b></td>        <td>Ground</td>        <td>2nd Mate</td>      </tr>      <tr>        <td><b>6</b></td>        <td>Ground</td>        <td>3rd Mate</td>      </tr>      <tr>        <td><b>7</b></td>        <td>V5</td>        <td>5v Power, pre-charge, 2nd mate</td>      </tr>      <tr>        <td><b>8</b></td>        <td>V5</td>        <td>5v Power</td>      </tr>      <tr>        <td><b>9</b></td>        <td>V5</td>        <td>5v Power</td>      </tr>      <tr>        <td><b>10</b></td>        <td>Ground</td>        <td>2nd Mate</td>      </tr>      <tr>        <td><b>11</b></td>        <td>Reserved</td>        <td>-</td>      </tr>      <tr>        <td><b>12</b></td>        <td>Ground</td>        <td>1st Mate</td>      </tr>      <tr>        <td><b>13</b></td>        <td>V12</td>        <td>12v Power, Pre-charge, 2nd mate</td>      </tr>      <tr>        <td><b>14</b></td>        <td>V12</td>        <td>12v Power</td>      </tr>      <tr>        <td><b>15</b></td>        <td>V12</td>        <td>12v Power</td>      </tr></table><h3>PATA Power pinout</h3><table class="norm" border="1" align="center" summary="IDE Power Connector PinOut and Signal names"><caption><b>IDE Power Connector Pin Out</b></caption><tr><td><b>Pin #</b></td><td><b>Signal Function</b></td><td><b>18 AWG Wire</b></td></tr><tr><td></td></tr><tr><td><b>1</b></td><td>+12V DC</td><td>Yellow</td></tr><tr><td><b>2</b></td><td>+12V Return</td><td>Black</td></tr><tr><td><b>3</b></td><td>+5V Return</td><td>Black</td></tr><tr><td><b>4</b></td><td>+5V DC</td><td>Red</td></tr></table><br/><br/><center><script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script><!-- 728x90 --><ins class="adsbygoogle"     style="display:inline-block;width:728px;height:90px"     data-ad-client="ca-pub-4308118663291870"     data-ad-slot="8490830536"></ins><script>(adsbygoogle = window.adsbygoogle || []).push({});</script></center><br/><br/>    <p>To date all new mother board designs are shipping with one or more SATA      interfaces. Some motherboard's also have the Legacy <a href=      "http://www.interfacebus.com/Design_Connector_IDE.html" title=      "IDE Connector Pin Out and Parallel ATA Bus Description">PATA</a>      interface to handle older Hard Disk Drives [HDD]. Place your main Disk      Drives on the Serial ATA interface if possible and the older drives on      the PATA interface ~ as a back-up drive. The SATA interface is much      faster then the PATA interface, but depending on the disk platter speed,      a transfer increase may not be seen. Here is a chart of <a href=      "http://www.interfacebus.com/PC_HardDrive_Throughput.html" title=      "HDD Transfer Speed">Hard Drive Transfer Speeds</a>.</p>
    <p>SATA signal names are with respect to the Host, the device connected to      the host reverses the signal names. Transmit pins connect to Receive pins      on the other device. The SATA connector is keyed at pin 1. These pin outs      for the Serial ATA connector are not compatible with the legacy <a href=      "http://www.interfacebus.com/Design_Connector_IDE.html" title=      "IDE Connector Pin Out and Parallel ATA Bus Description">PATA      connector</a>.</p><hr width="85%" />    <p>The Serial ATA interface [SATA] is the serial version of the IDE [ATA]      spec. SATA uses a 4 conductor cable with two differential pairs [Tx/Rx],      plus an additional 3 grounds pins and a separate power connector. Data      runs at 150MBps [1.5GHz] using <a href=      "http://www.interfacebus.com/Definitions.html#8B_10B" title=      "Encoding 8-bit data bytes to 10-bit Transmission Characters">8B/10B</a>      encoding and 250mV signal swings, with a maximum bus length of 1 meter.      SATA enhancements move the data transfer speed to; 300MBps [3.0Gbps], and      then 600MBps [6.0Gbps]. The current speed for SATA is 300Mbps [3Gbps].      Shielded external SATA [eSATA] data cable runs out to a maximum of      between 3 feet and 6 feet. eSATA cables are used external to the chassis      or case.</p><br/><center><script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script><!-- 728x90 --><ins class="adsbygoogle"     style="display:inline-block;width:728px;height:90px"     data-ad-client="ca-pub-4308118663291870"     data-ad-slot="8490830536"></ins><script>(adsbygoogle = window.adsbygoogle || []).push({});</script></center><br/><p><b><font size="+1"><u>Related SATA acronyms;</u></font></b><br/><dl>    <dt>Direct Attached Storage [DAS], is a drive connected to a server.<br/></dt>    <dd></dd>    <dt>Networked Attached Storage [NAS], is a drive connected to a network.<br/></dt>    <dd></dd>    <dt>Storage Area Network [SAN], is a system of drives.<br/></dt>    <dd></dd>    <dt>Direct Access Storage Devices [DASD], is a fast-access drive connected to computer.<br/></dt>    <dd></dd>    <dt>Host Bus Adapter [HBA],  is an interface between a computer and a drive.</dt>    <dd></dd></dl> 
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<b><u><font size="+1">Fun (or forgotten) fact </font></u></b> <br/>What does the acronym SATA stand for?  Most sites gloss over it and only provide "Serial ATA", but what is the ATA part?  Turns out that has quite a history.and only a very few sites will report that the acronym came about when IDE was standardized, the name for the new standard was (as most report) "ATA" or "AT Attachment".  What the "AT" stands for?  Who only lists part of an acronym when giving a definition!  I don't blame them,  This one is buried and all but forgotten, a sure beer bet for your geek buddies as they will almost certainly not know this one.<br/>Drum roll please..... The complete definition for SATA is: "<font color="#FFFFFF">Serial Advanced Technology Attachment</font>"<---Font is white on white, highlight with mouse to reveal the answer.<br/><i>That should be worth at least a buck!</i></p>
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