s3c2440timer.rar

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学习ARM9必须要先懂的基本接口实验,定时器中断程序
s3c2440timer.rar
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<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/6264abe94f8811599e61fefc/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6264abe94f8811599e61fefc/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">s3c2440<span class="_ _0"> </span><span class="ff2 sc1">&#23450;&#26102;&#22120;&#20013;&#26029;&#30340;&#24212;&#29992;</span></div><div class="t m0 x2 h4 y3 ff2 fs1 fc0 sc0 ls0 ws0">&#22312;&#21069;&#38754;&#30340;&#20960;&#31687;&#25991;&#31456;&#20013;&#65292;&#27599;&#24403;&#31243;&#24207;&#38656;&#35201;&#24310;&#26102;&#26102;&#65292;&#25105;&#20204;&#26159;&#21033;&#29992;&#24490;&#29615;&#35821;&#21477;&#26469;&#23454;&#29616;&#12290;</div><div class="t m0 x1 h4 y4 ff2 fs1 fc0 sc0 ls0 ws0">&#36825;&#31181;&#26041;&#27861;&#30340;&#24310;&#26102;&#31616;&#21333;&#65292;&#20294;&#19981;&#26159;&#24456;&#31934;&#30830;&#65292;&#23601;&#26159;&#35828;&#19981;&#33021;&#24471;&#21040;&#30830;&#20999;&#30340;&#19968;&#27573;&#26102;&#38388;&#30340;&#24310;&#26102;&#12290;</div><div class="t m0 x1 h4 y5 ff2 fs1 fc0 sc0 ls0 ws0">&#22240;&#27492;&#24403;&#38656;&#35201;&#31934;&#30830;&#24310;&#26102;&#26102;&#65292;&#23601;&#19981;&#33021;&#37319;&#29992;&#36825;&#31181;&#26041;&#27861;&#20102;&#12290;&#19968;&#33324;&#26159;&#21033;&#29992;&#23450;&#26102;&#22120;&#26469;&#23454;&#29616;&#12290;</div><div class="t m0 x1 h4 y6 ff2 fs1 fc0 sc0 ls0 ws0">&#22312;&#36825;&#37324;&#65292;&#25105;&#20204;&#23601;&#20171;&#32461;&#19968;&#19979;<span class="_ _0"> </span><span class="ff3">s3c2440<span class="_ _0"> </span></span>&#23450;&#26102;&#22120;&#30340;&#20351;&#29992;&#26041;&#27861;&#12290;</div><div class="t m0 x2 h5 y7 ff3 fs1 fc0 sc0 ls0 ws0">&#58887;</div><div class="t m0 x2 h4 y8 ff2 fs1 fc0 sc0 ls0 ws0">&#22312;&#35762;&#35299;&#20043;&#21069;&#65292;&#20808;&#20171;&#32461;&#19968;&#19979;<span class="_ _0"> </span><span class="ff3">s3c2440<span class="_ _0"> </span></span>&#26102;&#38047;&#31995;&#32479;&#12290;&#19968;&#33324;&#26469;&#35828;&#65292;<span class="ff3">MCU<span class="_ _0"> </span></span>&#30340;&#20027;&#26102;&#38047;&#28304;</div><div class="t m0 x1 h4 y9 ff2 fs1 fc0 sc0 ls0 ws0">&#20027;&#35201;&#26159;&#22806;&#37096;&#26230;&#25391;&#25110;&#22806;&#37096;&#26102;&#38047;&#65292;&#32780;&#29992;&#30340;&#26368;&#22810;&#30340;&#26159;&#22806;&#37096;&#26230;&#25391;&#12290;&#22312;&#27491;&#30830;&#24773;&#20917;&#19979;&#65292;&#31995;&#32479;</div><div class="t m0 x1 h4 ya ff2 fs1 fc0 sc0 ls0 ws0">&#20869;&#25152;&#20351;&#29992;&#30340;&#26102;&#38047;&#37117;&#26159;&#22806;&#37096;&#26102;&#38047;&#28304;&#32463;&#36807;&#19968;&#23450;&#30340;&#22788;&#29702;&#24471;&#21040;&#30340;&#12290;&#30001;&#20110;&#22806;&#37096;&#26102;&#38047;&#28304;&#30340;&#39057;</div><div class="t m0 x1 h4 yb ff2 fs1 fc0 sc0 ls0 ws0">&#29575;&#19968;&#33324;&#19981;&#33021;&#28385;&#36275;&#31995;&#32479;&#25152;&#38656;&#35201;&#30340;&#39640;&#39057;&#26465;&#20214;&#65292;&#25152;&#20197;&#24448;&#24448;&#38656;&#35201;<span class="_ _0"> </span><span class="ff3">PLL</span>&#65288;&#38145;&#30456;&#29615;&#65289;&#36827;&#34892;&#20493;</div><div class="t m0 x1 h4 yc ff2 fs1 fc0 sc0 ls0 ws0">&#39057;&#22788;&#29702;&#12290;&#22312;<span class="_ _0"> </span><span class="ff3">s3c2440<span class="_ _0"> </span></span>&#20013;&#65292;&#26377;<span class="_ _0"> </span><span class="ff3">2<span class="_ _0"> </span></span>&#20010;&#19981;&#21516;&#30340;<span class="_ _0"> </span><span class="ff3">PLL</span>&#65292;&#19968;&#20010;&#26159;<span class="_ _0"> </span><span class="ff3">MPLL</span>&#65292;&#21478;&#19968;&#20010;&#26159;</div><div class="t m0 x1 h4 yd ff3 fs1 fc0 sc0 ls0 ws0">UPLL<span class="ff2">&#12290;</span>UPLL<span class="_ _0"> </span><span class="ff2">&#26159;&#32473;<span class="_ _0"> </span></span>USB<span class="_ _0"> </span><span class="ff2">&#25552;&#20379;<span class="_ _0"> </span></span>48MHz<span class="ff2">&#12290;&#22312;&#36825;&#37324;&#65292;&#25105;&#20204;&#20027;&#35201;&#20171;&#32461;<span class="_ _0"> </span></span>MPLL<span class="ff2">&#12290;&#22806;&#37096;&#26102;</span></div><div class="t m0 x1 h4 ye ff2 fs1 fc0 sc0 ls0 ws0">&#38047;&#28304;&#32463;&#36807;<span class="_ _0"> </span><span class="ff3">MPLL<span class="_ _0"> </span></span>&#22788;&#29702;&#21518;&#33021;&#22815;&#24471;&#21040;&#19977;&#20010;&#19981;&#21516;&#30340;&#31995;&#32479;&#26102;&#38047;&#65306;<span class="ff3">FCLK</span>&#12289;<span class="ff3">HCLK<span class="_ _0"> </span></span>&#21644;</div><div class="t m0 x1 h4 yf ff3 fs1 fc0 sc0 ls0 ws0">PCLK<span class="ff2">&#12290;</span>FCLK<span class="_ _0"> </span><span class="ff2">&#26159;&#20027;&#39057;&#26102;&#38047;&#65292;&#29992;&#20110;<span class="_ _0"> </span></span>ARM920T<span class="_ _0"> </span><span class="ff2">&#20869;&#26680;&#65307;</span>HCLK<span class="_ _0"> </span><span class="ff2">&#29992;&#20110;<span class="_ _0"> </span></span>AHB<span class="_ _1"> </span><span class="ff2">&#24635;&#32447;&#35774;&#22791;&#65292;</span></div><div class="t m0 x1 h4 y10 ff2 fs1 fc0 sc0 ls0 ws0">&#22914;<span class="_ _0"> </span><span class="ff3">ARM920T</span>&#65292;&#20869;&#23384;&#25511;&#21046;&#65292;&#20013;&#26029;&#25511;&#21046;&#65292;<span class="ff3">LCD<span class="_ _0"> </span></span>&#25511;&#21046;&#65292;<span class="ff3">DMA<span class="_ _0"> </span></span>&#20197;&#21450;<span class="_ _0"> </span><span class="ff3">USB<span class="_ _0"> </span></span>&#20027;&#27169;&#22359;&#65307;</div><div class="t m0 x1 h4 y11 ff3 fs1 fc0 sc0 ls0 ws0">PCLK<span class="_ _0"> </span><span class="ff2">&#29992;&#20110;<span class="_ _0"> </span></span>APB<span class="_ _0"> </span><span class="ff2">&#24635;&#32447;&#35774;&#22791;&#65292;&#22914;&#22806;&#22260;&#35774;&#22791;&#30340;&#30475;&#38376;&#29399;&#65292;</span>IIS<span class="ff2">&#65292;</span>I2C<span class="ff2">&#65292;</span>PWM<span class="ff2">&#65292;</span>MMC<span class="_ _0"> </span><span class="ff2">&#25509;</span></div><div class="t m0 x1 h4 y12 ff2 fs1 fc0 sc0 ls0 ws0">&#21475;&#65292;<span class="ff3">ADC</span>&#65292;<span class="ff3">UART</span>&#65292;<span class="ff3">GPIO</span>&#65292;<span class="ff3">RTC<span class="_ _0"> </span></span>&#20197;&#21450;<span class="_ _0"> </span><span class="ff3">SPI</span>&#12290;&#36825;&#19977;&#20010;&#31995;&#32479;&#26102;&#38047;&#65288;<span class="ff3">FCLK</span>&#12289;<span class="ff3">HCLK<span class="_ _1"> </span></span>&#21644;</div><div class="t m0 x1 h4 y13 ff3 fs1 fc0 sc0 ls0 ws0">PCLK<span class="ff2">&#65289;&#26159;&#26377;&#19968;&#23450;&#30340;&#27604;&#20363;&#20851;&#31995;&#65292;&#36825;&#31181;&#20851;&#31995;&#26159;&#36890;&#36807;&#23492;&#23384;&#22120;<span class="_ _0"> </span></span>CLKDIVN<span class="_ _0"> </span><span class="ff2">&#20013;&#30340;<span class="_ _0"> </span></span>HDIVN</div><div class="t m0 x1 h4 y14 ff2 fs1 fc0 sc0 ls0 ws0">&#20301;&#21644;<span class="_ _0"> </span><span class="ff3">PDIVN<span class="_ _0"> </span></span>&#20301;&#26469;&#25511;&#21046;&#30340;&#65292;&#22240;&#27492;&#25105;&#20204;&#21482;&#35201;&#30693;&#36947;&#20102;<span class="_ _0"> </span><span class="ff3">FCLK</span>&#65292;&#20877;&#36890;&#36807;&#36825;&#20004;&#20301;&#30340;&#25511;&#21046;&#65292;</div><div class="t m0 x1 h4 y15 ff2 fs1 fc0 sc0 ls0 ws0">&#23601;&#33021;&#30830;&#23450;<span class="_ _0"> </span><span class="ff3">HCLK<span class="_ _0"> </span></span>&#21644;<span class="_ _0"> </span><span class="ff3">PCLK</span>&#12290;&#32780;<span class="_ _0"> </span><span class="ff3">FCLK<span class="_ _0"> </span></span>&#26159;&#22914;&#20309;&#24471;&#21040;&#30340;&#21602;&#65311;&#23427;&#26159;&#36890;&#36807;&#36755;&#20837;&#26102;&#38047;&#65288;&#21363;</div><div class="t m0 x1 h4 y16 ff2 fs1 fc0 sc0 ls0 ws0">&#22806;&#37096;&#26102;&#38047;&#28304;&#65289;&#30340;&#39057;&#29575;&#65292;&#32463;&#36807;&#19968;&#20010;&#35745;&#31639;&#20844;&#24335;&#65288;&#20855;&#20307;&#20844;&#24335;&#35831;&#26597;&#38405;&#25968;&#25454;&#25163;&#20876;&#65289;&#24471;&#21040;&#30340;&#65292;</div><div class="t m0 x1 h4 y17 ff2 fs1 fc0 sc0 ls0 ws0">&#36825;&#20010;&#35745;&#31639;&#20844;&#24335;&#36824;&#38656;&#35201;&#19977;&#20010;&#21442;&#25968;&#65288;<span class="ff3">MDIV</span>&#12289;<span class="ff3">PDIV</span>&#12289;<span class="ff3">SDIV</span>&#65289;&#65292;&#32780;&#36825;&#19977;&#20010;&#21442;&#25968;&#26159;&#32463;&#36807;</div><div class="t m0 x1 h4 y18 ff2 fs1 fc0 sc0 ls0 ws0">&#23492;&#23384;&#22120;<span class="_ _0"> </span><span class="ff3">MPLLCON<span class="_ _0"> </span></span>&#37197;&#32622;&#24471;&#21040;&#30340;&#12290;&#26368;&#21518;&#65292;&#25105;&#20204;&#29992;&#26368;&#28165;&#26224;&#30340;&#32447;&#36335;&#26469;&#32472;&#21046;&#19968;&#19979;&#26102;&#38047;&#30340;</div><div class="t m0 x1 h4 y19 ff2 fs1 fc0 sc0 ls0 ws0">&#20135;&#29983;&#36807;&#31243;&#65306;&#22806;&#37096;&#26102;&#38047;&#28304;&#8594;&#36890;&#36807;&#23492;&#23384;&#22120;<span class="_ _0"> </span><span class="ff3">MPLLCON<span class="_ _0"> </span></span>&#24471;&#21040;<span class="_ _0"> </span><span class="ff3">FCLK<span class="ff4">&#8594;</span></span>&#20877;&#36890;&#36807;&#23492;&#23384;&#22120;</div><div class="t m0 x1 h4 y1a ff3 fs1 fc0 sc0 ls0 ws0">CLKDIVN<span class="_ _0"> </span><span class="ff2">&#24471;&#21040;<span class="_ _0"> </span></span>HCLK<span class="_ _0"> </span><span class="ff2">&#21644;<span class="_ _0"> </span></span>PCLK<span class="ff2">&#12290;&#36825;&#20010;&#37197;&#32622;&#36807;&#31243;&#22312;&#21551;&#21160;&#25991;&#20214;&#20013;&#23601;&#24050;&#23436;&#25104;&#12290;&#22312;&#26412;&#24320;</span></div><div class="t m0 x1 h4 y1b ff2 fs1 fc0 sc0 ls0 ws0">&#21457;&#26495;&#19978;&#65292;&#22806;&#37096;&#26230;&#25391;&#20026;<span class="_ _0"> </span><span class="ff3">12MHz</span>&#65292;&#36827;&#36807;<span class="_ _0"> </span><span class="ff3">MPLL<span class="_ _0"> </span></span>&#20493;&#39057;&#20197;&#21518;&#24471;&#21040;<span class="_ _0"> </span><span class="ff3">400MHz<span class="_ _0"> </span></span>&#30340;<span class="_ _0"> </span><span class="ff3">FCLK</span>&#65292;&#32780;</div><div class="t m0 x1 h4 y1c ff3 fs1 fc0 sc0 ls0 ws0">FCLK<span class="ff2">&#12289;</span>HCLK<span class="ff2">&#12289;</span>PCLK<span class="_ _0"> </span><span class="ff2">&#20043;&#38388;&#30340;&#27604;&#20363;&#20851;&#31995;&#20026;<span class="_ _0"> </span></span>1<span class="ff2">&#65306;</span>4<span class="ff2">&#65306;</span>8<span class="ff2">&#65292;&#22240;&#27492;<span class="_ _0"> </span></span>HCLK<span class="_ _0"> </span><span class="ff2">&#20026;</span></div><div class="t m0 x1 h4 y1d ff3 fs1 fc0 sc0 ls0 ws0">100MHz<span class="ff2">&#65292;</span>PCLK<span class="_ _0"> </span><span class="ff2">&#20026;<span class="_ _0"> </span></span>50MHz<span class="ff2">&#12290;</span></div><div class="t m0 x2 h5 y1e ff3 fs1 fc0 sc0 ls0 ws0">&#58887;</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div> </body> </html>
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