begriffs open source - cmsis/blob - dev/v6.0.0-dev35/Driver/html/group__mci__bus__speed__ctrls.html

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 129 <div class="header">
 130   <div class="summary">
 131 <a href="#define-members">Macros</a>  </div>
 132   <div class="headertitle"><div class="title">MCI Bus Speed Mode<div class="ingroups"><a class="el" href="group__mci__interface__gr.html">MCI Interface</a> &raquo; <a class="el" href="group__mci__control__gr.html">MCI Control Codes</a></div></div></div>
 133 </div><!--header-->
 134 <div class="contents">
 135
 136 <p>Specify the bus speed mode.
 137 <a href="#details">More...</a></p>
 138 <table class="memberdecls">
 139 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="define-members" name="define-members"></a>
 140 Macros</h2></td></tr>
 141 <tr class="memitem:ga601fa8b27ab2e5f6d90c93d54c8f412d"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mci__bus__speed__ctrls.html#ga601fa8b27ab2e5f6d90c93d54c8f412d">ARM_MCI_BUS_DEFAULT_SPEED</a>&#160;&#160;&#160;(0x00UL)</td></tr>
 142 <tr class="memdesc:ga601fa8b27ab2e5f6d90c93d54c8f412d"><td class="mdescLeft">&#160;</td><td class="mdescRight">SD/MMC: Default Speed mode up to 25/26MHz.  <br /></td></tr>
 143 <tr class="separator:ga601fa8b27ab2e5f6d90c93d54c8f412d"><td class="memSeparator" colspan="2">&#160;</td></tr>
 144 <tr class="memitem:gaabda746ac7d6b4497358ff655a8ea6be"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mci__bus__speed__ctrls.html#gaabda746ac7d6b4497358ff655a8ea6be">ARM_MCI_BUS_HIGH_SPEED</a>&#160;&#160;&#160;(0x01UL)</td></tr>
 145 <tr class="memdesc:gaabda746ac7d6b4497358ff655a8ea6be"><td class="mdescLeft">&#160;</td><td class="mdescRight">SD/MMC: High Speed mode up to 50/52MHz.  <br /></td></tr>
 146 <tr class="separator:gaabda746ac7d6b4497358ff655a8ea6be"><td class="memSeparator" colspan="2">&#160;</td></tr>
 147 <tr class="memitem:ga0473c44a7b65044b3c6a8e7012009a4a"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mci__bus__speed__ctrls.html#ga0473c44a7b65044b3c6a8e7012009a4a">ARM_MCI_BUS_UHS_SDR12</a>&#160;&#160;&#160;(0x02UL)</td></tr>
 148 <tr class="memdesc:ga0473c44a7b65044b3c6a8e7012009a4a"><td class="mdescLeft">&#160;</td><td class="mdescRight">SD: SDR12 (Single Data Rate) up to 25MHz, 12.5MB/s: UHS-I (Ultra High Speed) 1.8V signaling.  <br /></td></tr>
 149 <tr class="separator:ga0473c44a7b65044b3c6a8e7012009a4a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 150 <tr class="memitem:gae32422631052307b3c4d269b25415907"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mci__bus__speed__ctrls.html#gae32422631052307b3c4d269b25415907">ARM_MCI_BUS_UHS_SDR25</a>&#160;&#160;&#160;(0x03UL)</td></tr>
 151 <tr class="memdesc:gae32422631052307b3c4d269b25415907"><td class="mdescLeft">&#160;</td><td class="mdescRight">SD: SDR25 (Single Data Rate) up to 50MHz, 25 MB/s: UHS-I (Ultra High Speed) 1.8V signaling.  <br /></td></tr>
 152 <tr class="separator:gae32422631052307b3c4d269b25415907"><td class="memSeparator" colspan="2">&#160;</td></tr>
 153 <tr class="memitem:ga9f326c02391d965918ae619b912b81e7"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mci__bus__speed__ctrls.html#ga9f326c02391d965918ae619b912b81e7">ARM_MCI_BUS_UHS_SDR50</a>&#160;&#160;&#160;(0x04UL)</td></tr>
 154 <tr class="memdesc:ga9f326c02391d965918ae619b912b81e7"><td class="mdescLeft">&#160;</td><td class="mdescRight">SD: SDR50 (Single Data Rate) up to 100MHz, 50 MB/s: UHS-I (Ultra High Speed) 1.8V signaling.  <br /></td></tr>
 155 <tr class="separator:ga9f326c02391d965918ae619b912b81e7"><td class="memSeparator" colspan="2">&#160;</td></tr>
 156 <tr class="memitem:gad2bab563e7bbb4bcf6bdabe6a13dadf4"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mci__bus__speed__ctrls.html#gad2bab563e7bbb4bcf6bdabe6a13dadf4">ARM_MCI_BUS_UHS_SDR104</a>&#160;&#160;&#160;(0x05UL)</td></tr>
 157 <tr class="memdesc:gad2bab563e7bbb4bcf6bdabe6a13dadf4"><td class="mdescLeft">&#160;</td><td class="mdescRight">SD: SDR104 (Single Data Rate) up to 208MHz, 104 MB/s: UHS-I (Ultra High Speed) 1.8V signaling.  <br /></td></tr>
 158 <tr class="separator:gad2bab563e7bbb4bcf6bdabe6a13dadf4"><td class="memSeparator" colspan="2">&#160;</td></tr>
 159 <tr class="memitem:ga04da920a5cac99eab9784527057f1b9c"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__mci__bus__speed__ctrls.html#ga04da920a5cac99eab9784527057f1b9c">ARM_MCI_BUS_UHS_DDR50</a>&#160;&#160;&#160;(0x06UL)</td></tr>
 160 <tr class="memdesc:ga04da920a5cac99eab9784527057f1b9c"><td class="mdescLeft">&#160;</td><td class="mdescRight">SD: DDR50 (Dual Data Rate) up to 50MHz, 50 MB/s: UHS-I (Ultra High Speed) 1.8V signaling.  <br /></td></tr>
 161 <tr class="separator:ga04da920a5cac99eab9784527057f1b9c"><td class="memSeparator" colspan="2">&#160;</td></tr>
 162 </table>
 163 <a name="details" id="details"></a><h2 class="groupheader">Description</h2>
 164 <p>Specify the bus speed mode. </p>
 165 <p>The function <a class="el" href="group__mci__interface__gr.html#gaec0506a2aa4ae75cf6bc02528f36fe30">ARM_MCI_Control</a> with <em>control</em> = <a class="el" href="group__mci__mode__ctrls.html#ga7f982d2e5aec768307d35a83c65fb3ef">ARM_MCI_BUS_SPEED</a> configures the bus speed of the MCI to the requested bits/s specified with <em>arg</em>.</p>
 166 <p>The function <a class="el" href="group__mci__interface__gr.html#gaec0506a2aa4ae75cf6bc02528f36fe30">ARM_MCI_Control</a> with <em>control</em> = <a class="el" href="group__mci__mode__ctrls.html#gaf7ede525eabc618fbbb9f7a294c8ed96">ARM_MCI_BUS_SPEED_MODE</a> configures the bus speed mode of the MCI as specified with <em>arg</em> listed bellow.</p>
 167 <p>The function <a class="el" href="group__mci__interface__gr.html#ga7e5a78b6e6409189833a0b72a0a3c48a">ARM_MCI_GetCapabilities</a> lists the supported bus speed modes. Initially, all SD cards use a 3.3 volt electrical interface. Some SD cards can switch to 1.8 volt operation. For example, the use of ultra-high-speed (UHS) SD cards requires 1.8 volt operation and a 4-bit bus data width. The data field <em>uhs_signaling</em> of the structure <a class="el" href="group__mci__interface__gr.html#structARM__MCI__CAPABILITIES" title="MCI Driver Capabilities.">ARM_MCI_CAPABILITIES</a> encodes whether the driver supports 1.8 volt UHS signaling.</p>
 168 <dl class="section see"><dt>See also</dt><dd><ul>
 169 <li><a class="el" href="group__mci__driver__strength__ctrls.html">MCI Driver Strength</a></li>
 170 </ul>
 171 </dd></dl>
 172 <p>The following codes are defined: </p>
 173 <h2 class="groupheader">Macro Definition Documentation</h2>
 174 <a id="ga601fa8b27ab2e5f6d90c93d54c8f412d" name="ga601fa8b27ab2e5f6d90c93d54c8f412d"></a>
 175 <h2 class="memtitle"><span class="permalink"><a href="#ga601fa8b27ab2e5f6d90c93d54c8f412d">&#9670;&#160;</a></span>ARM_MCI_BUS_DEFAULT_SPEED</h2>
 176
 177 <div class="memitem">
 178 <div class="memproto">
 179       <table class="memname">
 180         <tr>
 181           <td class="memname">#define ARM_MCI_BUS_DEFAULT_SPEED&#160;&#160;&#160;(0x00UL)</td>
 182         </tr>
 183       </table>
 184 </div><div class="memdoc">
 185
 186 <p>SD/MMC: Default Speed mode up to 25/26MHz. </p>
 187
 188 </div>
 189 </div>
 190 <a id="gaabda746ac7d6b4497358ff655a8ea6be" name="gaabda746ac7d6b4497358ff655a8ea6be"></a>
 191 <h2 class="memtitle"><span class="permalink"><a href="#gaabda746ac7d6b4497358ff655a8ea6be">&#9670;&#160;</a></span>ARM_MCI_BUS_HIGH_SPEED</h2>
 192
 193 <div class="memitem">
 194 <div class="memproto">
 195       <table class="memname">
 196         <tr>
 197           <td class="memname">#define ARM_MCI_BUS_HIGH_SPEED&#160;&#160;&#160;(0x01UL)</td>
 198         </tr>
 199       </table>
 200 </div><div class="memdoc">
 201
 202 <p>SD/MMC: High Speed mode up to 50/52MHz. </p>
 203
 204 </div>
 205 </div>
 206 <a id="ga0473c44a7b65044b3c6a8e7012009a4a" name="ga0473c44a7b65044b3c6a8e7012009a4a"></a>
 207 <h2 class="memtitle"><span class="permalink"><a href="#ga0473c44a7b65044b3c6a8e7012009a4a">&#9670;&#160;</a></span>ARM_MCI_BUS_UHS_SDR12</h2>
 208
 209 <div class="memitem">
 210 <div class="memproto">
 211       <table class="memname">
 212         <tr>
 213           <td class="memname">#define ARM_MCI_BUS_UHS_SDR12&#160;&#160;&#160;(0x02UL)</td>
 214         </tr>
 215       </table>
 216 </div><div class="memdoc">
 217
 218 <p>SD: SDR12 (Single Data Rate) up to 25MHz, 12.5MB/s: UHS-I (Ultra High Speed) 1.8V signaling. </p>
 219
 220 </div>
 221 </div>
 222 <a id="gae32422631052307b3c4d269b25415907" name="gae32422631052307b3c4d269b25415907"></a>
 223 <h2 class="memtitle"><span class="permalink"><a href="#gae32422631052307b3c4d269b25415907">&#9670;&#160;</a></span>ARM_MCI_BUS_UHS_SDR25</h2>
 224
 225 <div class="memitem">
 226 <div class="memproto">
 227       <table class="memname">
 228         <tr>
 229           <td class="memname">#define ARM_MCI_BUS_UHS_SDR25&#160;&#160;&#160;(0x03UL)</td>
 230         </tr>
 231       </table>
 232 </div><div class="memdoc">
 233
 234 <p>SD: SDR25 (Single Data Rate) up to 50MHz, 25 MB/s: UHS-I (Ultra High Speed) 1.8V signaling. </p>
 235
 236 </div>
 237 </div>
 238 <a id="ga9f326c02391d965918ae619b912b81e7" name="ga9f326c02391d965918ae619b912b81e7"></a>
 239 <h2 class="memtitle"><span class="permalink"><a href="#ga9f326c02391d965918ae619b912b81e7">&#9670;&#160;</a></span>ARM_MCI_BUS_UHS_SDR50</h2>
 240
 241 <div class="memitem">
 242 <div class="memproto">
 243       <table class="memname">
 244         <tr>
 245           <td class="memname">#define ARM_MCI_BUS_UHS_SDR50&#160;&#160;&#160;(0x04UL)</td>
 246         </tr>
 247       </table>
 248 </div><div class="memdoc">
 249
 250 <p>SD: SDR50 (Single Data Rate) up to 100MHz, 50 MB/s: UHS-I (Ultra High Speed) 1.8V signaling. </p>
 251
 252 </div>
 253 </div>
 254 <a id="gad2bab563e7bbb4bcf6bdabe6a13dadf4" name="gad2bab563e7bbb4bcf6bdabe6a13dadf4"></a>
 255 <h2 class="memtitle"><span class="permalink"><a href="#gad2bab563e7bbb4bcf6bdabe6a13dadf4">&#9670;&#160;</a></span>ARM_MCI_BUS_UHS_SDR104</h2>
 256
 257 <div class="memitem">
 258 <div class="memproto">
 259       <table class="memname">
 260         <tr>
 261           <td class="memname">#define ARM_MCI_BUS_UHS_SDR104&#160;&#160;&#160;(0x05UL)</td>
 262         </tr>
 263       </table>
 264 </div><div class="memdoc">
 265
 266 <p>SD: SDR104 (Single Data Rate) up to 208MHz, 104 MB/s: UHS-I (Ultra High Speed) 1.8V signaling. </p>
 267
 268 </div>
 269 </div>
 270 <a id="ga04da920a5cac99eab9784527057f1b9c" name="ga04da920a5cac99eab9784527057f1b9c"></a>
 271 <h2 class="memtitle"><span class="permalink"><a href="#ga04da920a5cac99eab9784527057f1b9c">&#9670;&#160;</a></span>ARM_MCI_BUS_UHS_DDR50</h2>
 272
 273 <div class="memitem">
 274 <div class="memproto">
 275       <table class="memname">
 276         <tr>
 277           <td class="memname">#define ARM_MCI_BUS_UHS_DDR50&#160;&#160;&#160;(0x06UL)</td>
 278         </tr>
 279       </table>
 280 </div><div class="memdoc">
 281
 282 <p>SD: DDR50 (Dual Data Rate) up to 50MHz, 50 MB/s: UHS-I (Ultra High Speed) 1.8V signaling. </p>
 283
 284 </div>
 285 </div>
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 290   <ul>
 291     <li class="footer">
 292       <script type="text/javascript">
 293         <!--
 294         writeFooter.call(this);
 295         //-->
 296       </script>
 297     </li>
 298   </ul>
 299 </div>
 300 </body>
 301 </html>