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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"> <title>Register File</title> <link href="doxygen.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.2.16 --> <center> <a class="qindex" href="main.html">Main Page</a> <a class="qindex" href="modules.html">Modules</a> <a class="qindex" href="pages.html">Related Pages</a> </center> <hr><h1>Register File<br> <small> [<a class="el" href="group__pavr__hwres.html">Hardware resources</a>]</small> </h1><table border=0 cellpadding=0 cellspacing=0> <tr><td colspan=2><br><h2>Modules</h2></td></tr> <tr><td nowrap align=right valign=top><a class="el" href="group__pavr__hwres__rf__rd1.html">Read port 1</a></td></tr> <tr><td nowrap align=right valign=top><a class="el" href="group__pavr__hwres__rf__rd2.html">Read port 2</a></td></tr> <tr><td nowrap align=right valign=top><a class="el" href="group__pavr__hwres__rf__wr.html">Write port</a></td></tr> <tr><td nowrap align=right valign=top><a class="el" href="group__pavr__hwres__rf__xwr.html">X port</a></td></tr> <tr><td nowrap align=right valign=top><a class="el" href="group__pavr__hwres__rf__ywr.html">Y port</a></td></tr> <tr><td nowrap align=right valign=top><a class="el" href="group__pavr__hwres__rf__zwr.html">Z port</a></td></tr> </table> <hr><a name="_details"></a><h2>Detailed Description</h2> The Register File is a 3 port memory, with 2 read ports and 1 write port. <br> It has 32 locations, 8 bits each. <br> Separate read and write ports for the upper three 16 bit words are provided. The upper three 16 bit words are the pointer registers X (at byte address 27:26), Y (29:28) and Z (31:30). <br> The RF is placed at the beginning of the Unified Memory space. <br> <br> <div align="center"> <img src="pavr_hwres_rf_01.gif" alt="pavr_hwres_rf_01.gif"> </div> <br> <hr><address align="right"><small>Generated on Tue Dec 31 20:26:30 2002 for Pipelined AVR microcontroller by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border=0 width=110 height=53></a>1.2.16 </small></address> </body> </html>