| 1 |
2 |
jt_eaton |
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
| 2 |
|
|
<html>
|
| 3 |
|
|
<head>
|
| 4 |
|
|
<meta http-equiv="CONTENT-TYPE" content="text/html; charset=utf-8">
|
| 5 |
|
|
<title>start</title>
|
| 6 |
|
|
<meta name="GENERATOR" content="OpenOffice.org 3.0 (Linux)">
|
| 7 |
|
|
<meta name="CREATED" content="0;0">
|
| 8 |
|
|
<meta name="CHANGED" content="20090513;8521600">
|
| 9 |
|
|
<meta name="KEYWORDS" content="start">
|
| 10 |
|
|
<meta name="Info 3" content="">
|
| 11 |
|
|
<meta name="Info 4" content="">
|
| 12 |
|
|
<meta name="date" content="2008-01-08T12:01:41-0500">
|
| 13 |
|
|
<meta name="robots" content="index,follow">
|
| 14 |
|
|
</head>
|
| 15 |
|
|
<body dir="ltr" lang="en-US">
|
| 16 |
|
|
<h1><a name="cde_sram_def"></a>SOCGEN Datasheet:<br>
|
| 17 |
|
|
</h1>
|
| 18 |
|
|
<div id="toc__inside" dir="ltr">
|
| 19 |
|
|
<ul>
|
| 20 |
|
|
<li>
|
| 21 |
|
|
<p style="margin-bottom: 0in;"><a href="#cde_sram_def">cde_sram_def<br>
|
| 22 |
|
|
</a></p>
|
| 23 |
|
|
<br>
|
| 24 |
|
|
<br> Synchronous one-port ram
|
| 25 |
|
|
<br>
|
| 26 |
|
|
<li>
|
| 27 |
|
|
<p><a href="../src/cde_sram_def.v">SourceCode <br>
|
| 28 |
|
|
</a></p>
|
| 29 |
|
|
</li>
|
| 30 |
|
|
<li>
|
| 31 |
|
|
<p style="margin-bottom: 0in;"><a href="#Parameters">Parameters<br>
|
| 32 |
|
|
</a></p>
|
| 33 |
|
|
</li>
|
| 34 |
|
|
<li>
|
| 35 |
|
|
<p style="margin-bottom: 0in;"><a href="#Interface">Interface<br>
|
| 36 |
|
|
</a></p>
|
| 37 |
|
|
</li>
|
| 38 |
|
|
<li>
|
| 39 |
|
|
<p style="margin-bottom: 0in;"><a href="#Children">Children<br>
|
| 40 |
|
|
</a></p>
|
| 41 |
|
|
</li>
|
| 42 |
|
|
<li>
|
| 43 |
|
|
<p><a href="../../html/cde_sram_def.html#TheoryofOperation">Theory of Operation<br>
|
| 44 |
|
|
</a></p>
|
| 45 |
|
|
</li>
|
| 46 |
|
|
</ul>
|
| 47 |
|
|
</li>
|
| 48 |
|
|
</ul>
|
| 49 |
|
|
</div>
|
| 50 |
|
|
<img style="width: 683px; height: 254px;" alt="" src="../png/cde_sram_def_sym.png"><br>
|
| 51 |
|
|
<b><br>
|
| 52 |
|
|
<h2><b><a name="Parameters"></a>Parameters<br></b></h2>
|
| 53 |
|
|
<b><br>
|
| 54 |
|
|
<br>
|
| 55 |
|
|
</b>
|
| 56 |
|
|
<table style="text-align: left; width: 640px; height: 120px;" border="8" cellpadding="4" cellspacing="4">
|
| 57 |
|
|
<tbody>
|
| 58 |
|
|
<tr>
|
| 59 |
|
|
<td style="vertical-align: top;">Name<br> </td>
|
| 60 |
|
|
<td style="vertical-align: top;">default <br> </td>
|
| 61 |
|
|
<td style="vertical-align: top;">Description<br></td>
|
| 62 |
|
|
</tr>
|
| 63 |
|
|
<tr>
|
| 64 |
|
|
<td style="vertical-align: top;">ADDR<br> </td>
|
| 65 |
|
|
<td style="vertical-align: top;">0<br> </td>
|
| 66 |
|
|
<td style="vertical-align: top;">Number of address bits<br></td>
|
| 67 |
|
|
</tr>
|
| 68 |
|
|
|
| 69 |
|
|
<tr>
|
| 70 |
|
|
<td style="vertical-align: top;">WIDTH<br> </td>
|
| 71 |
|
|
<td style="vertical-align: top;">0<br> </td>
|
| 72 |
|
|
<td style="vertical-align: top;">Number of data bits<br></td>
|
| 73 |
|
|
</tr>
|
| 74 |
|
|
|
| 75 |
|
|
<tr>
|
| 76 |
|
|
<td style="vertical-align: top;">WORDS<br> </td>
|
| 77 |
|
|
<td style="vertical-align: top;">0<br> </td>
|
| 78 |
|
|
<td style="vertical-align: top;">Number of memory words. Must be fully addressable by ADDR address bits<br></td>
|
| 79 |
|
|
</tr>
|
| 80 |
|
|
|
| 81 |
|
|
<tr>
|
| 82 |
|
|
<td style="vertical-align: top;">WRITETHRU<br> </td>
|
| 83 |
|
|
<td style="vertical-align: top;">0<br> </td>
|
| 84 |
|
|
<td style="vertical-align: top;">If a read and write occur to the same address on the same cycle then 0 reads old data while 1 reads new<br></td>
|
| 85 |
|
|
</tr>
|
| 86 |
|
|
|
| 87 |
|
|
<tr>
|
| 88 |
|
|
<td style="vertical-align: top;">DEFAULT<br> </td>
|
| 89 |
|
|
<td style="vertical-align: top;">{WIDTH{1'bx}}<br> </td>
|
| 90 |
|
|
<td style="vertical-align: top;">Output read value if cs and rd are not both active <br></td>
|
| 91 |
|
|
</tr>
|
| 92 |
|
|
|
| 93 |
|
|
<tr>
|
| 94 |
|
|
<td style="vertical-align: top;">INIT_FILE<br> </td>
|
| 95 |
|
|
<td style="vertical-align: top;">"NONE"<br> </td>
|
| 96 |
|
|
<td style="vertical-align: top;">Filename of memory image loaded at startup<br></td>
|
| 97 |
|
|
</tr>
|
| 98 |
|
|
|
| 99 |
|
|
<tr>
|
| 100 |
|
|
<td style="vertical-align: top;">INSTANCE_NAME<br> </td>
|
| 101 |
|
|
<td style="vertical-align: top;">"U1"<br> </td>
|
| 102 |
|
|
<td style="vertical-align: top;">Instance name of sram. Only needed for asic tool flows<br></td>
|
| 103 |
|
|
</tr>
|
| 104 |
|
|
|
| 105 |
|
|
</tbody>
|
| 106 |
|
|
</table>
|
| 107 |
|
|
<p><b><b><br>
|
| 108 |
|
|
</b></b></p>
|
| 109 |
|
|
<p><br>
|
| 110 |
|
|
</p>
|
| 111 |
|
|
<p><b><b><br>
|
| 112 |
|
|
</b></b></p>
|
| 113 |
|
|
<p><b><b><br>
|
| 114 |
|
|
<br>
|
| 115 |
|
|
</b></b></p>
|
| 116 |
|
|
<h2><b><b><a name="Interface"></a>Interface</b><b> <br>
|
| 117 |
|
|
</b></b></h2>
|
| 118 |
|
|
<p style="margin-bottom: 0in;"></p>
|
| 119 |
|
|
<br>
|
| 120 |
|
|
<br>
|
| 121 |
|
|
<br>
|
| 122 |
|
|
<table style="text-align: left; width: 640px; height: 120px;" border="8"
|
| 123 |
|
|
cellpadding="4" cellspacing="4">
|
| 124 |
|
|
<tbody>
|
| 125 |
|
|
<tr>
|
| 126 |
|
|
<td style="vertical-align: top;">NAME<br> </td>
|
| 127 |
|
|
<td style="vertical-align: top;">Type<br> </td>
|
| 128 |
|
|
<td style="vertical-align: top;">Description<br> </td>
|
| 129 |
|
|
</tr>
|
| 130 |
|
|
<tr>
|
| 131 |
|
|
<td style="vertical-align: top;">addr[ADDR-1:0 ]<br> </td>
|
| 132 |
|
|
<td style="vertical-align: top;">input<br> </td>
|
| 133 |
|
|
<td style="vertical-align: top;">Memory address bits<br> </td>
|
| 134 |
|
|
</tr>
|
| 135 |
|
|
|
| 136 |
|
|
<tr>
|
| 137 |
|
|
<td style="vertical-align: top;">clk<br> </td>
|
| 138 |
|
|
<td style="vertical-align: top;">input<br> </td>
|
| 139 |
|
|
<td style="vertical-align: top;">Active high clock<br> </td>
|
| 140 |
|
|
</tr>
|
| 141 |
|
|
|
| 142 |
|
|
<tr>
|
| 143 |
|
|
<td style="vertical-align: top;">cs<br> </td>
|
| 144 |
|
|
<td style="vertical-align: top;">input<br> </td>
|
| 145 |
|
|
<td style="vertical-align: top;">Active high chip select<br> </td>
|
| 146 |
|
|
</tr>
|
| 147 |
|
|
|
| 148 |
|
|
<tr>
|
| 149 |
|
|
<td style="vertical-align: top;">rd<br> </td>
|
| 150 |
|
|
<td style="vertical-align: top;">input<br> </td>
|
| 151 |
|
|
<td style="vertical-align: top;">Active high read enable<br> </td>
|
| 152 |
|
|
</tr>
|
| 153 |
|
|
|
| 154 |
|
|
<tr>
|
| 155 |
|
|
<td style="vertical-align: top;">rdata[WIDTH-1:0 ]<br> </td>
|
| 156 |
|
|
<td style="vertical-align: top;">output<br> </td>
|
| 157 |
|
|
<td style="vertical-align: top;">read data out<br> </td>
|
| 158 |
|
|
</tr>
|
| 159 |
|
|
|
| 160 |
|
|
<tr>
|
| 161 |
|
|
<td style="vertical-align: top;">wdata[WIDTH-1:0 ]<br> </td>
|
| 162 |
|
|
<td style="vertical-align: top;">input<br> </td>
|
| 163 |
|
|
<td style="vertical-align: top;">write data in<br> </td>
|
| 164 |
|
|
</tr>
|
| 165 |
|
|
|
| 166 |
|
|
<tr>
|
| 167 |
|
|
<td style="vertical-align: top;">wr<br> </td>
|
| 168 |
|
|
<td style="vertical-align: top;">input<br> </td>
|
| 169 |
|
|
<td style="vertical-align: top;">Active high write enable<br> </td>
|
| 170 |
|
|
</tr>
|
| 171 |
|
|
|
| 172 |
|
|
</tbody>
|
| 173 |
|
|
</table>
|
| 174 |
|
|
<p><b><b><br>
|
| 175 |
|
|
</b></b></p>
|
| 176 |
|
|
<h2><b><a name="Children"></a>Children<br></b></h2>
|
| 177 |
|
|
<b><br>
|
| 178 |
|
|
</b>
|
| 179 |
|
|
<table style="text-align: left; width: 640px; height: 120px;" border="8" cellpadding="4" cellspacing="4">
|
| 180 |
|
|
<tbody>
|
| 181 |
|
|
<tr>
|
| 182 |
|
|
<td style="vertical-align: top;">Instance<br> </td>
|
| 183 |
|
|
<td style="vertical-align: top;">Vendor<br> </td>
|
| 184 |
|
|
<td style="vertical-align: top;">Library<br></td>
|
| 185 |
|
|
<td style="vertical-align: top;">Component<br></td>
|
| 186 |
|
|
<td style="vertical-align: top;">Version<br></td>
|
| 187 |
|
|
</tr>
|
| 188 |
|
|
</tbody>
|
| 189 |
|
|
</table>
|
| 190 |
|
|
<p><b><b><br>
|
| 191 |
|
|
</b></b></p>
|
| 192 |
|
|
<br>
|
| 193 |
|
|
<br>
|
| 194 |
|
|
<br>
|
| 195 |
|
|
<br>
|
| 196 |
|
|
<br>
|
| 197 |
|
|
<br>
|
| 198 |
|
|
<br>
|
| 199 |
|
|
<br>
|
| 200 |
|
|
<img style="width: 683px; height: 254px;" alt="" src="../png/cde_sram_def_sch.png"><br>
|
| 201 |
|
|
<b><br>
|
| 202 |
|
|
<br>
|
| 203 |
|
|
<br>
|
| 204 |
|
|
<br>
|
| 205 |
|
|
<br>
|
| 206 |
|
|
<br>
|
| 207 |
|
|
<br>
|
| 208 |
|
|
<br>
|
| 209 |
|
|
<br>
|
| 210 |
|
|
<br>
|
| 211 |
|
|
<br>
|
| 212 |
|
|
<br>
|
| 213 |
|
|
<br>
|
| 214 |
|
|
<br>
|
| 215 |
|
|
<br>
|
| 216 |
|
|
<br>
|
| 217 |
|
|
<br>
|
| 218 |
|
|
<br>
|
| 219 |
|
|
<br>
|
| 220 |
|
|
<br>
|
| 221 |
|
|
<br>
|
| 222 |
|
|
<br>
|
| 223 |
|
|
<br>
|
| 224 |
|
|
<br>
|
| 225 |
|
|
<br>
|
| 226 |
|
|
</body>
|
| 227 |
|
|
</html>
|
