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1.92 + 1.93 + } 1.94 + 1.95 + 1.96 + if (window.setRelStartPage) 1.97 + { 1.98 + setRelStartPage("msb_peripherals.htm"); 1.99 + 1.100 + autoSync(0); 1.101 + sendSyncInfo(); 1.102 + sendAveInfoOut(); 1.103 + } 1.104 + 1.105 +} 1.106 +else 1.107 + if (window.gbIE4) 1.108 + document.location.reload(); 1.109 +//--> 1.110 +</script> 1.111 +</head> 1.112 +<body><script type="text/javascript" language="javascript1.2"> 1.113 +<!-- 1.114 +if (window.writeIntopicBar) 1.115 + writeIntopicBar(4); 1.116 +//--> 1.117 +</script> 1.118 +<h1>LatticeMico32 DMA Controller <a title="View Data Sheet" href="dma.pdf" target="_blank" onmouseover="if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == 'Netscape')) ehlp_showtip(this,event,'View Data Sheet');" onmouseout="if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == 'Netscape')) ehlp_hidetip();"><img src="ds_icon_ast.jpg" x-maintain-ratio="TRUE" width="29px" height="31px" border="0" class="img_whs1"></a></h1> 1.119 + 1.120 +<p>The LatticeMico32 direct memory access controller (DMA) provides a master 1.121 + read port, a master write port, and a slave port to control data transmission. 1.122 + </p> 1.123 + 1.124 +<p class="whs2"><span style="font-style: italic;"><I>*If the 1.125 + data sheet fails to open, see the note at the bottom of this page.</I></span></p> 1.126 + 1.127 +<h2>Revision History </h2> 1.128 + 1.129 +<table x-use-null-cells cellspacing="0" width="637" height="84" class="whs3"> 1.130 +<script language='JavaScript'><!-- 1.131 +if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) == 4)) document.write("</table><table x-use-null-cells cellspacing='0' width='637' height='84' border='1' bordercolor='silver' bordercolorlight='silver' bordercolordark='silver'>"); 1.132 +//--></script> 1.133 +<col class="whs4"> 1.134 +<col class="whs5"> 1.135 + 1.136 +<tr valign="top" class="whs6"> 1.137 +<td bgcolor="#DEE8F4" width="86px" class="whs7"> 1.138 +<p class=Table 1.139 + style="font-weight: bold;">Version</td> 1.140 +<td bgcolor="#DEE8F4" width="504px" class="whs8"> 1.141 +<p class=Table 1.142 + style="font-weight: bold;">Description</td></tr> 1.143 + 1.144 +<tr valign="top" class="whs6"> 1.145 +<td colspan="1" rowspan="1" width="86px" class="whs9"> 1.146 +<p class=Table 1.147 + style="font-weight: normal;">3.1 (8.0)</td> 1.148 +<td colspan="1" rowspan="1" width="504px" class="whs10"> 1.149 +<p class=Table>DMA Engine upgraded to comply with Rule 3.100 of Wishbone 1.150 + Specifications, which deal with byte alignment for transfers that are 1.151 + less than the width of Wishbone data bus.</td></tr> 1.152 + 1.153 +<tr valign="top" class="whs6"> 1.154 +<td colspan="1" rowspan="1" width="86px" class="whs9"> 1.155 +<p class=Table 1.156 + style="font-weight: normal;"><span style="font-weight: normal;">3.0 1.157 + (7.0 SP2)</span></td> 1.158 +<td colspan="1" rowspan="1" width="504px" class="whs10"> 1.159 +<p class=Table>Because the read and write channel worked in parallel, the 1.160 + write channel started writing data to the slave as soon as the FIFO is 1.161 + not empty.</p> 1.162 +<p class=Table>Increased burst size to support bigger bursts from a current 1.163 + value of 4 and 8 to 16 and 32, respectively. DMA now supports four burst 1.164 + sizes: 4, 8, 16, and 32. The Burst Size field of the control register 1.165 + was increased to 2 bits.</p> 1.166 +<p class=Table>A glitch was removed on the S_ACK_O signal.</td></tr> 1.167 + 1.168 +<tr valign="top" class="whs6"> 1.169 +<td colspan="1" rowspan="1" width="86px" class="whs9"> 1.170 +<p class="whs11">1.0</td> 1.171 +<td colspan="1" rowspan="1" width="504px" class="whs10"> 1.172 +<p class=Table>Initial release.</td></tr> 1.173 +<script language='JavaScript'><!-- 1.174 +if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) == 4)) document.write("</table></table><table>"); 1.175 +//--></script> 1.176 +</table> 1.177 + 1.178 + 1.179 + 1.180 +<h2>Dialog Box Parameters</h2> 1.181 + 1.182 +<table x-use-null-cells cellspacing="0" class="whs12"> 1.183 +<script language='JavaScript'><!-- 1.184 +if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) == 4)) document.write("</table><table x-use-null-cells cellspacing='0' border='1' bordercolor='silver' bordercolorlight='silver' bordercolordark='silver'>"); 1.185 +//--></script> 1.186 +<col> 1.187 +<col> 1.188 + 1.189 +<tr valign="top" class="whs13"> 1.190 +<td bgcolor="#DEE8F4" class="whs14"> 1.191 +<p class=Table 1.192 + style="font-weight: bold; margin-right: 2px;">Parameter</td> 1.193 +<td bgcolor="#DEE8F4" class="whs15"> 1.194 +<p class=Table 1.195 + style="font-weight: bold;">Description</td></tr> 1.196 + 1.197 +<tr valign="top" class="whs13"> 1.198 +<td colspan="1" rowspan="1" class="whs16"> 1.199 +<p class=Table 1.200 + style="margin-right: 2px;">Instance Name</td> 1.201 +<td colspan="1" rowspan="1" class="whs17"> 1.202 +<p class=Table>Specifies the name of the DMA controller instance. Alphanumeric 1.203 + values and underscores are supported. The default is dma.</td></tr> 1.204 + 1.205 +<tr valign="top" class="whs13"> 1.206 +<td colspan="1" rowspan="1" class="whs16"> 1.207 +<p class=Table 1.208 + style="margin-right: 2px;">Base Address</td> 1.209 +<td colspan="1" rowspan="1" class="whs17"> 1.210 +<p class=Table>Specifies the base address for accessing the internal registers. 1.211 + The minimum boundary alignment is 0X80. Supported values are 0X80000000 1.212 + to 0XFFFFFFFF. The default is 0X80000000.</td></tr> 1.213 + 1.214 +<tr valign="top" class="whs13"> 1.215 +<td colspan="1" rowspan="1" class="whs18"> 1.216 +<p class=Table 1.217 + style="margin-right: 2px;">FIFO Implementation</td> 1.218 +<td colspan="1" rowspan="1" class="whs19"> 1.219 +<p class=Table>Determines whether the FIFO is implemented as an EBR or 1.220 + a LUT. The default is EBR.</td></tr> 1.221 + 1.222 +<tr valign="top" class="whs13"> 1.223 +<td colspan="1" rowspan="1" class="whs18"> 1.224 +<p class=Table 1.225 + style="margin-right: 2px;">Length Width</td> 1.226 +<td colspan="1" rowspan="1" class="whs19"> 1.227 +<p class=Table>Specifies the number of bits in the length register. The 1.228 + length register holds a count value that determines the number of DMA 1.229 + transactions to be performed. Supported values are 1 to 32. The default 1.230 + is 16. The default value permits up to 65535 (0XFFFF) memory transactions 1.231 + to be performed.</td></tr> 1.232 +<script language='JavaScript'><!-- 1.233 +if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) == 4)) document.write("</table></table><table>"); 1.234 +//--></script> 1.235 +</table> 1.236 + 1.237 + 1.238 + 1.239 +<p><span style="font-weight: bold;"><B>Note</B></span>: If the data sheet fails 1.240 + to open, click <img src="qm_icon.jpg" x-maintain-ratio="TRUE" width="14px" height="16px" border="0" class="img_whs20"> on the Available Components toolbar, and 1.241 + then click the note button.</p> 1.242 + 1.243 +<script type="text/javascript" language="JavaScript"> 1.244 +<!-- 1.245 + if ((parseInt(navigator.appVersion) == 4) && (navigator.appName == 'Netscape')) 1.246 + document.write("<div id='tooltip' class='WebHelpPopupMenu'></div>"); 1.247 +//--> 1.248 +</script><script type="text/javascript" language="javascript1.2"> 1.249 +<!-- 1.250 +if (window.writeIntopicBar) 1.251 + writeIntopicBar(0); 1.252 +//--> 1.253 +</script> 1.254 +</body> 1.255 +</html>