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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>Bypass chain 1</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>Bypass chain 1<br> <small> [<a class="el" href="group__pavr__hwres__bpu.html">Bypass Unit</a>]</small> </h1><table border=0 cellpadding=0 cellspacing=0> </table> <dl compact><dt><b> Bypass chain 1 (BPR1) write port connectivity</b><dd> <br> <div align="center"> <img src="pavr_hwres_bpr1_01.gif" alt="pavr_hwres_bpr1_01.gif"> </div> <br> </dl><dl compact><dt><b> Requests to BPR1 write port</b><dd> <ul> <li>pavr_s5_alu_bpr1wr_rq <br> Need by regular ALU instructions that have a 16 bit result (ADIW, SBIW, MUL, MULS, MULSU, FMUL, FMULS, FMULSU, MOVW).<li>pavr_s5_dacux_bpr12wr_rq <br> Needed by loads and stores with pre(post) decrement(increment). <br> Lower byte of X pointer will be written into BPR1.<li>pavr_s5_dacuy_bpr12wr_rq <br> Needed by loads and stores with pre(post) decrement(increment). <br> Lower byte of Y pointer will be written into BPR1.<li>pavr_s5_dacuz_bpr12wr_rq <br> Needed by loads and stores with pre(post) decrement(increment). <br> Lower byte of Z pointer will be written into BPR1. </ul> </dl><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>