begriffs open source - cmsis/blob - main/Driver/group__USBH__packets.html

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 126 <div class="header">
 127   <div class="summary">
 128 <a href="#define-members">Macros</a>  </div>
 129   <div class="headertitle"><div class="title">USBH Packet Information<div class="ingroups"><a class="el" href="group__usb__interface__gr.html">USB Interface</a> &raquo; <a class="el" href="group__usbh__interface__gr.html">USB Host Interface</a> &raquo; <a class="el" href="group__usbh__host__gr.html">USB Host</a></div></div></div>
 130 </div><!--header-->
 131 <div class="contents">
 132
 133 <p>Specify USB packet information used by the function <a class="el" href="group__usbh__host__gr.html#ga817d503a24ad8927fa362c8f6394920d">ARM_USBH_PipeTransfer</a>.
 134 <a href="#details">More...</a></p>
 135 <table class="memberdecls">
 136 <tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="define-members" name="define-members"></a>
 137 Macros</h2></td></tr>
 138 <tr class="memitem:gafb0bcfee8abd4ada7f789aec2993048a"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#gafb0bcfee8abd4ada7f789aec2993048a">ARM_USBH_PACKET_SETUP</a>&#160;&#160;&#160;(0x01UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a8139a9c76ea4a062795130196d3b6ed9">ARM_USBH_PACKET_TOKEN_Pos</a>)</td></tr>
 139 <tr class="memdesc:gafb0bcfee8abd4ada7f789aec2993048a"><td class="mdescLeft">&#160;</td><td class="mdescRight">SETUP Packet.  <br /></td></tr>
 140 <tr class="separator:gafb0bcfee8abd4ada7f789aec2993048a"><td class="memSeparator" colspan="2">&#160;</td></tr>
 141 <tr class="memitem:ga409b2ae6503e738eb86e35652f9ebf8d"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#ga409b2ae6503e738eb86e35652f9ebf8d">ARM_USBH_PACKET_OUT</a>&#160;&#160;&#160;(0x02UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a8139a9c76ea4a062795130196d3b6ed9">ARM_USBH_PACKET_TOKEN_Pos</a>)</td></tr>
 142 <tr class="memdesc:ga409b2ae6503e738eb86e35652f9ebf8d"><td class="mdescLeft">&#160;</td><td class="mdescRight">OUT Packet.  <br /></td></tr>
 143 <tr class="separator:ga409b2ae6503e738eb86e35652f9ebf8d"><td class="memSeparator" colspan="2">&#160;</td></tr>
 144 <tr class="memitem:ga08d60ec20c091b5e7e252d137268cb76"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#ga08d60ec20c091b5e7e252d137268cb76">ARM_USBH_PACKET_IN</a>&#160;&#160;&#160;(0x03UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a8139a9c76ea4a062795130196d3b6ed9">ARM_USBH_PACKET_TOKEN_Pos</a>)</td></tr>
 145 <tr class="memdesc:ga08d60ec20c091b5e7e252d137268cb76"><td class="mdescLeft">&#160;</td><td class="mdescRight">IN Packet.  <br /></td></tr>
 146 <tr class="separator:ga08d60ec20c091b5e7e252d137268cb76"><td class="memSeparator" colspan="2">&#160;</td></tr>
 147 <tr class="memitem:ga2eeab58cebb4556214c021ff02c36b16"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#ga2eeab58cebb4556214c021ff02c36b16">ARM_USBH_PACKET_PING</a>&#160;&#160;&#160;(0x04UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a8139a9c76ea4a062795130196d3b6ed9">ARM_USBH_PACKET_TOKEN_Pos</a>)</td></tr>
 148 <tr class="memdesc:ga2eeab58cebb4556214c021ff02c36b16"><td class="mdescLeft">&#160;</td><td class="mdescRight">PING Packet.  <br /></td></tr>
 149 <tr class="separator:ga2eeab58cebb4556214c021ff02c36b16"><td class="memSeparator" colspan="2">&#160;</td></tr>
 150 <tr class="memitem:ga40075aa1d3eff6d4b94dfe28d7745873"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#ga40075aa1d3eff6d4b94dfe28d7745873">ARM_USBH_PACKET_DATA0</a>&#160;&#160;&#160;(0x01UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a2b28435952abaeea6fd29480f10e56eb">ARM_USBH_PACKET_DATA_Pos</a>)</td></tr>
 151 <tr class="memdesc:ga40075aa1d3eff6d4b94dfe28d7745873"><td class="mdescLeft">&#160;</td><td class="mdescRight">DATA0 PID.  <br /></td></tr>
 152 <tr class="separator:ga40075aa1d3eff6d4b94dfe28d7745873"><td class="memSeparator" colspan="2">&#160;</td></tr>
 153 <tr class="memitem:ga34014ff212b26e3ee8c8670a180846e2"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#ga34014ff212b26e3ee8c8670a180846e2">ARM_USBH_PACKET_DATA1</a>&#160;&#160;&#160;(0x02UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a2b28435952abaeea6fd29480f10e56eb">ARM_USBH_PACKET_DATA_Pos</a>)</td></tr>
 154 <tr class="memdesc:ga34014ff212b26e3ee8c8670a180846e2"><td class="mdescLeft">&#160;</td><td class="mdescRight">DATA1 PID.  <br /></td></tr>
 155 <tr class="separator:ga34014ff212b26e3ee8c8670a180846e2"><td class="memSeparator" colspan="2">&#160;</td></tr>
 156 <tr class="memitem:gaf47930d994c53fc1772caed129aee921"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#gaf47930d994c53fc1772caed129aee921">ARM_USBH_PACKET_SSPLIT</a>&#160;&#160;&#160;(0x08UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a41e5706fcf6e028c5c86751b37a27dd6">ARM_USBH_PACKET_SPLIT_Pos</a>)</td></tr>
 157 <tr class="memdesc:gaf47930d994c53fc1772caed129aee921"><td class="mdescLeft">&#160;</td><td class="mdescRight">SSPLIT Packet.  <br /></td></tr>
 158 <tr class="separator:gaf47930d994c53fc1772caed129aee921"><td class="memSeparator" colspan="2">&#160;</td></tr>
 159 <tr class="memitem:ga3b8fa0d3aa083718b4f5d60e92394b47"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#ga3b8fa0d3aa083718b4f5d60e92394b47">ARM_USBH_PACKET_SSPLIT_S</a>&#160;&#160;&#160;(0x09UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a41e5706fcf6e028c5c86751b37a27dd6">ARM_USBH_PACKET_SPLIT_Pos</a>)</td></tr>
 160 <tr class="memdesc:ga3b8fa0d3aa083718b4f5d60e92394b47"><td class="mdescLeft">&#160;</td><td class="mdescRight">SSPLIT Packet: Data Start.  <br /></td></tr>
 161 <tr class="separator:ga3b8fa0d3aa083718b4f5d60e92394b47"><td class="memSeparator" colspan="2">&#160;</td></tr>
 162 <tr class="memitem:gaf99ee84befc6522fef56b21df870df72"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#gaf99ee84befc6522fef56b21df870df72">ARM_USBH_PACKET_SSPLIT_E</a>&#160;&#160;&#160;(0x0AUL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a41e5706fcf6e028c5c86751b37a27dd6">ARM_USBH_PACKET_SPLIT_Pos</a>)</td></tr>
 163 <tr class="memdesc:gaf99ee84befc6522fef56b21df870df72"><td class="mdescLeft">&#160;</td><td class="mdescRight">SSPLIT Packet: Data End.  <br /></td></tr>
 164 <tr class="separator:gaf99ee84befc6522fef56b21df870df72"><td class="memSeparator" colspan="2">&#160;</td></tr>
 165 <tr class="memitem:ga8d2b46fbc04d871abe0661f8acd18a94"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#ga8d2b46fbc04d871abe0661f8acd18a94">ARM_USBH_PACKET_SSPLIT_S_E</a>&#160;&#160;&#160;(0x0BUL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a41e5706fcf6e028c5c86751b37a27dd6">ARM_USBH_PACKET_SPLIT_Pos</a>)</td></tr>
 166 <tr class="memdesc:ga8d2b46fbc04d871abe0661f8acd18a94"><td class="mdescLeft">&#160;</td><td class="mdescRight">SSPLIT Packet: Data All.  <br /></td></tr>
 167 <tr class="separator:ga8d2b46fbc04d871abe0661f8acd18a94"><td class="memSeparator" colspan="2">&#160;</td></tr>
 168 <tr class="memitem:gadbfbbf7b4709f3ee4c3610da8402cfec"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#gadbfbbf7b4709f3ee4c3610da8402cfec">ARM_USBH_PACKET_CSPLIT</a>&#160;&#160;&#160;(0x0CUL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a41e5706fcf6e028c5c86751b37a27dd6">ARM_USBH_PACKET_SPLIT_Pos</a>)</td></tr>
 169 <tr class="memdesc:gadbfbbf7b4709f3ee4c3610da8402cfec"><td class="mdescLeft">&#160;</td><td class="mdescRight">CSPLIT Packet.  <br /></td></tr>
 170 <tr class="separator:gadbfbbf7b4709f3ee4c3610da8402cfec"><td class="memSeparator" colspan="2">&#160;</td></tr>
 171 <tr class="memitem:ga6dd82c7b96bc1339d725a6133a32a62f"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__USBH__packets.html#ga6dd82c7b96bc1339d725a6133a32a62f">ARM_USBH_PACKET_PRE</a>&#160;&#160;&#160;(1UL &lt;&lt; 12)</td></tr>
 172 <tr class="memdesc:ga6dd82c7b96bc1339d725a6133a32a62f"><td class="mdescLeft">&#160;</td><td class="mdescRight">PRE Token.  <br /></td></tr>
 173 <tr class="separator:ga6dd82c7b96bc1339d725a6133a32a62f"><td class="memSeparator" colspan="2">&#160;</td></tr>
 174 </table>
 175 <a name="details" id="details"></a><h2 class="groupheader">Description</h2>
 176 <p>Specify USB packet information used by the function <a class="el" href="group__usbh__host__gr.html#ga817d503a24ad8927fa362c8f6394920d">ARM_USBH_PipeTransfer</a>. </p>
 177 <p>This section provides the packet information values (parameter <em>packet</em>) for the <a class="el" href="group__usbh__host__gr.html#ga817d503a24ad8927fa362c8f6394920d">ARM_USBH_PipeTransfer</a> function.</p>
 178 <p>The following values are defined: </p>
 179 <h2 class="groupheader">Macro Definition Documentation</h2>
 180 <a id="gafb0bcfee8abd4ada7f789aec2993048a" name="gafb0bcfee8abd4ada7f789aec2993048a"></a>
 181 <h2 class="memtitle"><span class="permalink"><a href="#gafb0bcfee8abd4ada7f789aec2993048a">&#9670;&#160;</a></span>ARM_USBH_PACKET_SETUP</h2>
 182
 183 <div class="memitem">
 184 <div class="memproto">
 185       <table class="memname">
 186         <tr>
 187           <td class="memname">#define ARM_USBH_PACKET_SETUP&#160;&#160;&#160;(0x01UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a8139a9c76ea4a062795130196d3b6ed9">ARM_USBH_PACKET_TOKEN_Pos</a>)</td>
 188         </tr>
 189       </table>
 190 </div><div class="memdoc">
 191
 192 <p>SETUP Packet. </p>
 193 <p>Generate SETUP transaction. </p>
 194
 195 </div>
 196 </div>
 197 <a id="ga409b2ae6503e738eb86e35652f9ebf8d" name="ga409b2ae6503e738eb86e35652f9ebf8d"></a>
 198 <h2 class="memtitle"><span class="permalink"><a href="#ga409b2ae6503e738eb86e35652f9ebf8d">&#9670;&#160;</a></span>ARM_USBH_PACKET_OUT</h2>
 199
 200 <div class="memitem">
 201 <div class="memproto">
 202       <table class="memname">
 203         <tr>
 204           <td class="memname">#define ARM_USBH_PACKET_OUT&#160;&#160;&#160;(0x02UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a8139a9c76ea4a062795130196d3b6ed9">ARM_USBH_PACKET_TOKEN_Pos</a>)</td>
 205         </tr>
 206       </table>
 207 </div><div class="memdoc">
 208
 209 <p>OUT Packet. </p>
 210 <p>Generate OUT transaction. </p>
 211
 212 </div>
 213 </div>
 214 <a id="ga08d60ec20c091b5e7e252d137268cb76" name="ga08d60ec20c091b5e7e252d137268cb76"></a>
 215 <h2 class="memtitle"><span class="permalink"><a href="#ga08d60ec20c091b5e7e252d137268cb76">&#9670;&#160;</a></span>ARM_USBH_PACKET_IN</h2>
 216
 217 <div class="memitem">
 218 <div class="memproto">
 219       <table class="memname">
 220         <tr>
 221           <td class="memname">#define ARM_USBH_PACKET_IN&#160;&#160;&#160;(0x03UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a8139a9c76ea4a062795130196d3b6ed9">ARM_USBH_PACKET_TOKEN_Pos</a>)</td>
 222         </tr>
 223       </table>
 224 </div><div class="memdoc">
 225
 226 <p>IN Packet. </p>
 227 <p>Generate IN transaction. </p>
 228
 229 </div>
 230 </div>
 231 <a id="ga2eeab58cebb4556214c021ff02c36b16" name="ga2eeab58cebb4556214c021ff02c36b16"></a>
 232 <h2 class="memtitle"><span class="permalink"><a href="#ga2eeab58cebb4556214c021ff02c36b16">&#9670;&#160;</a></span>ARM_USBH_PACKET_PING</h2>
 233
 234 <div class="memitem">
 235 <div class="memproto">
 236       <table class="memname">
 237         <tr>
 238           <td class="memname">#define ARM_USBH_PACKET_PING&#160;&#160;&#160;(0x04UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a8139a9c76ea4a062795130196d3b6ed9">ARM_USBH_PACKET_TOKEN_Pos</a>)</td>
 239         </tr>
 240       </table>
 241 </div><div class="memdoc">
 242
 243 <p>PING Packet. </p>
 244 <p>Generate PING transaction (no data packet). </p>
 245
 246 </div>
 247 </div>
 248 <a id="ga40075aa1d3eff6d4b94dfe28d7745873" name="ga40075aa1d3eff6d4b94dfe28d7745873"></a>
 249 <h2 class="memtitle"><span class="permalink"><a href="#ga40075aa1d3eff6d4b94dfe28d7745873">&#9670;&#160;</a></span>ARM_USBH_PACKET_DATA0</h2>
 250
 251 <div class="memitem">
 252 <div class="memproto">
 253       <table class="memname">
 254         <tr>
 255           <td class="memname">#define ARM_USBH_PACKET_DATA0&#160;&#160;&#160;(0x01UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a2b28435952abaeea6fd29480f10e56eb">ARM_USBH_PACKET_DATA_Pos</a>)</td>
 256         </tr>
 257       </table>
 258 </div><div class="memdoc">
 259
 260 <p>DATA0 PID. </p>
 261 <p>Force DATA0 PID (Packet Identifier) for the initial data packet. When not specified than the driver provides the initial value according to the current state. </p>
 262
 263 </div>
 264 </div>
 265 <a id="ga34014ff212b26e3ee8c8670a180846e2" name="ga34014ff212b26e3ee8c8670a180846e2"></a>
 266 <h2 class="memtitle"><span class="permalink"><a href="#ga34014ff212b26e3ee8c8670a180846e2">&#9670;&#160;</a></span>ARM_USBH_PACKET_DATA1</h2>
 267
 268 <div class="memitem">
 269 <div class="memproto">
 270       <table class="memname">
 271         <tr>
 272           <td class="memname">#define ARM_USBH_PACKET_DATA1&#160;&#160;&#160;(0x02UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a2b28435952abaeea6fd29480f10e56eb">ARM_USBH_PACKET_DATA_Pos</a>)</td>
 273         </tr>
 274       </table>
 275 </div><div class="memdoc">
 276
 277 <p>DATA1 PID. </p>
 278 <p>Force DATA1 PID (Packet Identifier) for the initial data packet. When not specified than the driver provides the initial value according to the current state. </p>
 279
 280 </div>
 281 </div>
 282 <a id="gaf47930d994c53fc1772caed129aee921" name="gaf47930d994c53fc1772caed129aee921"></a>
 283 <h2 class="memtitle"><span class="permalink"><a href="#gaf47930d994c53fc1772caed129aee921">&#9670;&#160;</a></span>ARM_USBH_PACKET_SSPLIT</h2>
 284
 285 <div class="memitem">
 286 <div class="memproto">
 287       <table class="memname">
 288         <tr>
 289           <td class="memname">#define ARM_USBH_PACKET_SSPLIT&#160;&#160;&#160;(0x08UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a41e5706fcf6e028c5c86751b37a27dd6">ARM_USBH_PACKET_SPLIT_Pos</a>)</td>
 290         </tr>
 291       </table>
 292 </div><div class="memdoc">
 293
 294 <p>SSPLIT Packet. </p>
 295 <p>Used when driver does not support automatic handling of SPLIT packets and indicates Start-Split packet. For isochronous OUT it indicates that the High-speed data is in the middle of the Full-speed data payload. </p>
 296
 297 </div>
 298 </div>
 299 <a id="ga3b8fa0d3aa083718b4f5d60e92394b47" name="ga3b8fa0d3aa083718b4f5d60e92394b47"></a>
 300 <h2 class="memtitle"><span class="permalink"><a href="#ga3b8fa0d3aa083718b4f5d60e92394b47">&#9670;&#160;</a></span>ARM_USBH_PACKET_SSPLIT_S</h2>
 301
 302 <div class="memitem">
 303 <div class="memproto">
 304       <table class="memname">
 305         <tr>
 306           <td class="memname">#define ARM_USBH_PACKET_SSPLIT_S&#160;&#160;&#160;(0x09UL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a41e5706fcf6e028c5c86751b37a27dd6">ARM_USBH_PACKET_SPLIT_Pos</a>)</td>
 307         </tr>
 308       </table>
 309 </div><div class="memdoc">
 310
 311 <p>SSPLIT Packet: Data Start. </p>
 312 <p>Used when driver does not support automatic handling of SPLIT packets and indicates Start-Split packet. Valid only for isochronous OUT and indicates that the High-speed data is the start of the Full-speed data payload. </p>
 313
 314 </div>
 315 </div>
 316 <a id="gaf99ee84befc6522fef56b21df870df72" name="gaf99ee84befc6522fef56b21df870df72"></a>
 317 <h2 class="memtitle"><span class="permalink"><a href="#gaf99ee84befc6522fef56b21df870df72">&#9670;&#160;</a></span>ARM_USBH_PACKET_SSPLIT_E</h2>
 318
 319 <div class="memitem">
 320 <div class="memproto">
 321       <table class="memname">
 322         <tr>
 323           <td class="memname">#define ARM_USBH_PACKET_SSPLIT_E&#160;&#160;&#160;(0x0AUL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a41e5706fcf6e028c5c86751b37a27dd6">ARM_USBH_PACKET_SPLIT_Pos</a>)</td>
 324         </tr>
 325       </table>
 326 </div><div class="memdoc">
 327
 328 <p>SSPLIT Packet: Data End. </p>
 329 <p>Used when driver does not support automatic handling of SPLIT packets and indicates Start-Split packet. Valid only for isochronous OUT and indicates that the High-speed data is the end of the Full-speed data payload. </p>
 330
 331 </div>
 332 </div>
 333 <a id="ga8d2b46fbc04d871abe0661f8acd18a94" name="ga8d2b46fbc04d871abe0661f8acd18a94"></a>
 334 <h2 class="memtitle"><span class="permalink"><a href="#ga8d2b46fbc04d871abe0661f8acd18a94">&#9670;&#160;</a></span>ARM_USBH_PACKET_SSPLIT_S_E</h2>
 335
 336 <div class="memitem">
 337 <div class="memproto">
 338       <table class="memname">
 339         <tr>
 340           <td class="memname">#define ARM_USBH_PACKET_SSPLIT_S_E&#160;&#160;&#160;(0x0BUL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a41e5706fcf6e028c5c86751b37a27dd6">ARM_USBH_PACKET_SPLIT_Pos</a>)</td>
 341         </tr>
 342       </table>
 343 </div><div class="memdoc">
 344
 345 <p>SSPLIT Packet: Data All. </p>
 346 <p>Used when driver does not support automatic handling of SPLIT packets and indicates Start-Split packet. Valid only for isochronous OUT and indicates that the High-speed data is all of the Full-speed data payload. </p>
 347
 348 </div>
 349 </div>
 350 <a id="gadbfbbf7b4709f3ee4c3610da8402cfec" name="gadbfbbf7b4709f3ee4c3610da8402cfec"></a>
 351 <h2 class="memtitle"><span class="permalink"><a href="#gadbfbbf7b4709f3ee4c3610da8402cfec">&#9670;&#160;</a></span>ARM_USBH_PACKET_CSPLIT</h2>
 352
 353 <div class="memitem">
 354 <div class="memproto">
 355       <table class="memname">
 356         <tr>
 357           <td class="memname">#define ARM_USBH_PACKET_CSPLIT&#160;&#160;&#160;(0x0CUL &lt;&lt; <a class="el" href="Driver__USBH_8h.html#a41e5706fcf6e028c5c86751b37a27dd6">ARM_USBH_PACKET_SPLIT_Pos</a>)</td>
 358         </tr>
 359       </table>
 360 </div><div class="memdoc">
 361
 362 <p>CSPLIT Packet. </p>
 363 <p>Used when driver does not support automatic handling of SPLIT packets and indicates Complete-Split packet. </p>
 364
 365 </div>
 366 </div>
 367 <a id="ga6dd82c7b96bc1339d725a6133a32a62f" name="ga6dd82c7b96bc1339d725a6133a32a62f"></a>
 368 <h2 class="memtitle"><span class="permalink"><a href="#ga6dd82c7b96bc1339d725a6133a32a62f">&#9670;&#160;</a></span>ARM_USBH_PACKET_PRE</h2>
 369
 370 <div class="memitem">
 371 <div class="memproto">
 372       <table class="memname">
 373         <tr>
 374           <td class="memname">#define ARM_USBH_PACKET_PRE&#160;&#160;&#160;(1UL &lt;&lt; 12)</td>
 375         </tr>
 376       </table>
 377 </div><div class="memdoc">
 378
 379 <p>PRE Token. </p>
 380 <p>Generate PRE (Preamble) for low-speed devices within a full/low-speed signaling environment. </p>
 381
 382 </div>
 383 </div>
 384 </div><!-- contents -->
 385 </div><!-- doc-content -->
 386 <!-- start footer part -->
 387 <div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
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