<?xml version="1.0" encoding="ANSI_X3.4-1968" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>Hardware control related constants</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="MTD NAND Driver Programming Interface" /><link rel="up" href="ch08.html" title="Chapter 8. Constants" /><link rel="prev" href="ch08s02.html" title="ECC selection constants" /><link rel="next" href="ch08s04.html" title="Bad block table related constants" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Hardware control related constants</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch08s02.html">Prev</a> </td><th width="60%" align="center">Chapter 8. Constants</th><td width="20%" align="right"> <a accesskey="n" href="ch08s04.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Hardware control related constants"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="Hardware_control_related_constants"></a>Hardware control related constants</h2></div></div></div><p> These constants describe the requested hardware access function when the boardspecific hardware control function is called </p><pre class="programlisting"> /* Select the chip by setting nCE to low */ #define NAND_CTL_SETNCE 1 /* Deselect the chip by setting nCE to high */ #define NAND_CTL_CLRNCE 2 /* Select the command latch by setting CLE to high */ #define NAND_CTL_SETCLE 3 /* Deselect the command latch by setting CLE to low */ #define NAND_CTL_CLRCLE 4 /* Select the address latch by setting ALE to high */ #define NAND_CTL_SETALE 5 /* Deselect the address latch by setting ALE to low */ #define NAND_CTL_CLRALE 6 /* Set write protection by setting WP to high. Not used! */ #define NAND_CTL_SETWP 7 /* Clear write protection by setting WP to low. Not used! */ #define NAND_CTL_CLRWP 8 </pre><p> </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch08s02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch08.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ch08s04.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">ECC selection constants </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Bad block table related constants</td></tr></table></div></body></html>
