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<html><head>	<title>Verilog HDL: QDR SRAM Controller </title>	<meta name="keywords" content="Design example, Verilog HDL, QDR, memory, controller, reference design">	<meta name="description" content="You can implement the Altera QDR SRAM controller reference design in an APEX II or Stratix device to provide a simplified interface to a QDR SRAM device ">	<meta name="date" content="2002-05-16">	<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">	<link rel="stylesheet" type="text/css" href="/js.lib/style.css">	<link rel="stylesheet" type="text/css" href="/js.lib/style_form.css"></head><!--stopindex--><BODY BGCOLOR="#ffffff" marginwidth="0" marginheight="0" rightmargin="0" topmargin="0" leftmargin="0"><!-- Toolbar Header --><table cellSpacing=0 cellPadding=0 width="100%" border=0 nowrap><tr>	<td><table width="100%" border="0" cellspacing="0" cellpadding="0" nowrap><tr>	<td bgcolor="#0182C4" align="left"><img src="/common/template/altera_left.jpg" width="578" 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and ATM switches. QDR SRAMs can handle the transfer of four data words through the SRAM in a single clock cycle.</P><p>You can implement the Altera<font size="-1"><sup>&reg;</sup></font> QDR SRAM controller reference design in an APEX<sup>&#153;</sup>&nbsp;II or Stratix<sup>&#153;</sup> device to provide a simplified interface to a QDR SRAM device using one of the reference designs below. The reference designs include Verilog HDL source files, synthesis and place-and-route project files, and functional and timing simulation environments.</p><p>Download a QDR SRAM controller reference design: </p> <ul><li><a href="http://www.altera.com/support/examples/ref_design_lic.html?function=qdr_ref_design">QDR SRAM Controller Reference Design for APEX&nbsp;II Devices</a><li><a href="http://www.altera.com/support/examples/ref_design_lic.html?function=qdr_ref_design_stx">QDR SRAM Controller Reference Design for Stratix Devices</a></ul><hr><p><i><b>QDR SRAM Controller Top-Level Block Diagram</b></i></p><p><img src="images/ver-qdr-top_level.gif" alt="QDR SRAM Controller Top-Level Block Diagram" width="400" height="201" border="0"></p><hr><p>For more information on using this example in your project, go to:</p><ul><li><a href="/literature/an/an133.pdf">AN 133: QDR SRAM Controller Reference Design for APEX&nbsp;II Devices</a><li><a href="/literature/an/an211.pdf">AN 211: QDR SRAM Controller Reference Design for Stratix Devices</a><li><a href="verilog.html#using">How to Use Verilog HDL Examples</a></ul><!-- end content --><!--stopindex-->		<p>&nbsp;</p>    </td>	<td rowspan="3" width="15"><img src="/common/template/spacer.gif" width="15" height="15" alt="" border="0"></td>	</tr>  <tr valign="top">     <td bgcolor="#e0e0e0" valign="top" width="161"> 	&nbsp;	</td></tr><tr> 	<td bgcolor=#e0e0e0 valign="bottom" width="161" height="2">       <p class="footer">	  <br>&nbsp;&nbsp;Contact Us<br>		&nbsp;&nbsp;<a href="/corporate/contact/info/con-feedback_form.jsp">Please Give Us Feedback</a><br>		&nbsp;&nbsp;<a href="/corporate/contact/signup/con-signup.jsp">Sign Up for E-mail Updates</a></p>	</td></tr><!-- Footer Information --> <tr><td bgcolor="#0182C4" colspan="4" align="right"><img src="/common/template/footer_user.gif" width="761" height="18" usemap="#footer_user" border="0" alt="footer"><map name="footer_user"><area shape="rect" coords="521,3,578,16" href="/common/new_user.html" alt="New User to the Altera Web Site" title="New User to the Altera Web Site"><area shape="rect" coords="587,4,631,15" href="/common/sitemap.html" alt="Altera Site Map" title="Altera Site Map"><area shape="rect" coords="643,3,684,14" href="/common/privacy.html" alt="Altera Privacy Policy" title="Altera Privacy Policy"><area shape="rect" coords="690,3,757,14" href="/common/legal.html" alt="Altera Legal Notice" title="Altera Legal Notice"></map></td> </tr><tr>	<td width="161">&nbsp;</td>	<td colspan="3" width="100%"class="footer"><br><!-- begin top level navigation (bottom) --><a href=/index.jsp>Home</a>&nbsp;|&nbsp;<a href=/products/prd-index.html>Products</a>&nbsp;|&nbsp;<a href=/support/spt-index.html>Support</a>&nbsp;|&nbsp;<a href=/solutions/sln-index.html>System Solutions</a>&nbsp;|&nbsp;<a href=/education/edu-index.html>Education & Events</a>&nbsp;|&nbsp;<a href=http://buy.altera.com/ecommerce/>Buy On-Line</a>&nbsp;|&nbsp;<a href=/corporate/crp-index.html>Corporate</a><br><!-- end top level navigation (bottom) --> <!-- begin second level navigation (bottom) --><a href=/mysupport >mySupport</a>&nbsp;|&nbsp;<a href=/support/kdb/spt-search_kdb.html>Knowledge Database</a>&nbsp;|&nbsp;<a href=/support/software/sof-index.html>Software</a>&nbsp;|&nbsp;<a href=/support/devices/dvs-index.html>Devices</a>&nbsp;|&nbsp;<a href=/support/examples/exm-index.html>Design Examples</a><br><!-- end second level navigation (bottom) -->		<p class="footer">Copyright &copy; 1995 - 2002 Altera Corporation, 101 Innovation Drive, San Jose, California 95134, USA.</p>		</td>	</tr>	</table>	</td></tr></table><!--startindex--></body></html>

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