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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
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<head>
<title>HwB: SCSI Internal (Single-ended) Connector (Offline)</title>
<meta name="Description" content="Pinout and description for the SCSI Internal (Single-ended) connector.">
<meta name="Keywords" content="HwB, pinout, hardware, connector, scsi, internal, single-ended">
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<meta name="Author" content="Hardware Book team">
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<body background="../../images/bgr_grey.jpg" bgcolor="#C0C0C0" text="#000000" link="#0000EE" vlink="#551A8B" alink="#FF0000">
<p align="center"><a href="../index.html"><img src="../../images/mini_Back.gif" alt="GoTo Connector" border="0" width="64" height="48"></a><img src="../images/menu.gif" alt="CONNECTOR" width="400" height="48"><a href="../../index.html"><img src="../../images/mini_HwB.gif" alt="GoTo Main" border="0" width="64" height="48"></a></p>
<h1>SCSI Internal (Single-ended)</h1>
<p>SCSI=Small Computer System Interface.<br>
Based on an original design by Shugart Associates. SCSI was
ratified in 1986.</p>
<p><img src="../../images/conn/idc50m.gif" alt="50 PIN IDC MALE" width="311" height="61"> (at the controller & harddisk)<br>
<img src="../../images/conn/idc50f.gif" alt="50 PIN IDC FEMALE" width="311" height="61"> (at the cable.)</p>
<p>50 PIN IDC MALE at the controller & harddisk.<br>
50 PIN IDC FEMALE at the cable.</p>
<table border="1">
<tr>
<th>Pin</th>
<th>Name</th>
<th>Dir</th>
<th>Description</th>
</tr>
<tr>
<td>2</td>
<td>DB0</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Data Bus 0</td>
</tr>
<tr>
<td>4</td>
<td>DB1</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Data Bus 1</td>
</tr>
<tr>
<td>6</td>
<td>DB2</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Data Bus 2</td>
</tr>
<tr>
<td>8</td>
<td>DB3</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Data Bus 3</td>
</tr>
<tr>
<td>10</td>
<td>DB4</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Data Bus 4</td>
</tr>
<tr>
<td>12</td>
<td>DB5</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Data Bus 5</td>
</tr>
<tr>
<td>14</td>
<td>DB6</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Data Bus 6</td>
</tr>
<tr>
<td>16</td>
<td>DB7</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Data Bus 7</td>
</tr>
<tr>
<td>18</td>
<td>PARITY</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Data Parity (odd Parity)</td>
</tr>
<tr>
<td>20</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" width="32" height="9"></td>
<td>Ground</td>
</tr>
<tr>
<td>22</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" width="32" height="9"></td>
<td>Ground</td>
</tr>
<tr>
<td>24</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" width="32" height="9"></td>
<td>Ground</td>
</tr>
<tr>
<td>26</td>
<td>TMPWR</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Termination Power</td>
</tr>
<tr>
<td>28</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" width="32" height="9"></td>
<td>Ground</td>
</tr>
<tr>
<td>30</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" width="32" height="9"></td>
<td>Ground</td>
</tr>
<tr>
<td>32</td>
<td>/ATN</td>
<td><img src="../../images/arrowl.gif" alt="<--" width="32" height="9"></td>
<td>Attention</td>
</tr>
<tr>
<td>34</td>
<td>GND</td>
<td><img src="../../images/arrow.gif" alt="---" width="32" height="9"></td>
<td>Ground</td>
</tr>
<tr>
<td>36</td>
<td>/BSY</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Busy</td>
</tr>
<tr>
<td>38</td>
<td>/ACK</td>
<td><img src="../../images/arrowl.gif" alt="<--" width="32" height="9"></td>
<td>Acknowledge</td>
</tr>
<tr>
<td>40</td>
<td>/RST</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Reset</td>
</tr>
<tr>
<td>42</td>
<td>/MSG</td>
<td><img src="../../images/arrowr.gif" alt="-->" width="32" height="9"></td>
<td>Message</td>
</tr>
<tr>
<td>44</td>
<td>/SEL</td>
<td><img src="../../images/arrowlr.gif" alt="<->" width="32" height="9"></td>
<td>Select</td>
</tr>
<tr>
<td>46</td>
<td>/C/D</td>
<td><img src="../../images/arrowr.gif" alt="-->" width="32" height="9"></td>
<td>Control/Data</td>
</tr>
<tr>
<td>48</td>
<td>/REQ</td>
<td><img src="../../images/arrowr.gif" alt="-->" width="32" height="9"></td>
<td>Request</td>
</tr>
<tr>
<td>50</td>
<td>/I/O</td>
<td><img src="../../images/arrowr.gif" alt="-->" width="32" height="9"></td>
<td>Input/Output</td>
</tr>
</table>
<p><i>
Note: Direction is Device relative Bus (other Devices).
</i></p>
<p><i>All odd-numbered pins, except pin 25, are connected to
ground. Pin 25 is left open.</i></p>
<table border="0">
<tr>
<td><i><font size="2">Contributor:</font></i></td>
<td><i><font size="2">
<a href="../../comment/index.html">Joakim gren</a>
</font></i></td>
</tr>
</table>
<table border="0">
<tr>
<td><i><font size="2">Source:</font></i></td>
<td><i><font size="2">
?
</font></i></td>
</tr>
</table>
<p><em><font size="2">
Copyright © <a href="../../comment/index.html">The Hardware Book Team</a> 1996-2004.<br>
May be copied and redistributed, partially or in whole, as appropriate.<br>
Document last modified: 2002-01-10
</font></em></p>
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