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<h1>USB Device Interface Peripheral</h1>
<null><a name="UDP"></a><b>UDP</b> <i><font size="-1">(<a href="AT91SAM7S256_h.html#AT91S_UDP">AT91S_UDP</a>)</font></i><b> 0xFFFB0000 </b><i><font size="-1">(<a href="AT91SAM7S256_h.html#AT91C_BASE_UDP">AT91C_BASE_UDP</a>)</font></i>
<table border=1 cellpadding=3 cellspacing=0><null><th bgcolor="#FFFFCC"><font size="-1">Periph ID <a href="#AIC">AIC</a></font></th><th bgcolor="#FFFFCC"><font size="-1">Symbol</font></th><th bgcolor="#FFFFCC"><font size="-1">Description</font></th><tr><td bgcolor="#FFFFCC"><font size="-1"><b>11</b> </font></td><td><font size="-1"><i><font size="-1">(<a href="AT91SAM7S256_h.html#AT91C_ID_UDP">AT91C_ID_UDP</a>)</font></i></font></td><td><font size="-1">USB Device Port</font></td></tr>
</null></table><br><table border=1 cellpadding=0 cellspacing=0 width="100%"><null><th bgcolor="#FFFFCC"><font size="-1"><b>Function</b></font></th><th bgcolor="#FFFFCC"><font size="-1"><b>Description</b></font></th><tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_CfgPMC">AT91F_UDP_CfgPMC</a></b></font></td><td><font size="-1">Enable Peripheral clock in PMC for UDP</font></td></tr>
</null></table><br><br></null><a name="UDP"></a><h2>UDP Software API <i><font size="-1">(<a href="AT91SAM7S256_h.html#AT91S_UDP">AT91S_UDP</a>)</font></i></h2>
<a name="UDP"></a><null><table border=1 cellpadding=0 cellspacing=0 width="100%"><null><th bgcolor="#FFFFCC"><font size="-1"><b>Offset</b></font></th><th bgcolor="#FFFFCC"><font size="-1"><b>Field</b></font></th><th bgcolor="#FFFFCC"><font size="-1"><b>Description</b></font></th>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x0</b></font></td><td><font size="-1">UDP_NUM (<a href="AT91SAM7S256_UDP.html#UDP_FRM_NUM">UDP_FRM_NUM</a>)</font></td><td><font size="-1">Frame Number Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x4</b></font></td><td><font size="-1">UDP_GLBSTATE (<a href="#UDP_GLB_STATE">UDP_GLB_STATE</a>)</font></td><td><font size="-1">Global State Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x8</b></font></td><td><font size="-1"><a href="AT91SAM7S256_UDP.html#UDP_FADDR">UDP_FADDR</a></font></td><td><font size="-1">Function Address Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x10</b></font></td><td><font size="-1"><a href="AT91SAM7S256_UDP.html#UDP_IER">UDP_IER</a></font></td><td><font size="-1">Interrupt Enable Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x14</b></font></td><td><font size="-1"><a href="AT91SAM7S256_UDP.html#UDP_IDR">UDP_IDR</a></font></td><td><font size="-1">Interrupt Disable Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x18</b></font></td><td><font size="-1"><a href="AT91SAM7S256_UDP.html#UDP_IMR">UDP_IMR</a></font></td><td><font size="-1">Interrupt Mask Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x1C</b></font></td><td><font size="-1"><a href="AT91SAM7S256_UDP.html#UDP_ISR">UDP_ISR</a></font></td><td><font size="-1">Interrupt Status Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x20</b></font></td><td><font size="-1"><a href="AT91SAM7S256_UDP.html#UDP_ICR">UDP_ICR</a></font></td><td><font size="-1">Interrupt Clear Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x28</b></font></td><td><font size="-1">UDP_RSTEP (<a href="#UDP_RST_EP">UDP_RST_EP</a>)</font></td><td><font size="-1">Reset Endpoint Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x30</b></font></td><td><font size="-1">UDP_CSR[4] (<a href="AT91SAM7S256_UDP.html#UDP_CSR">UDP_CSR</a>)</font></td><td><font size="-1">Endpoint Control and Status Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x50</b></font></td><td><font size="-1">UDP_FDR[4] (<a href="AT91SAM7S256_UDP.html#UDP_FDR">UDP_FDR</a>)</font></td><td><font size="-1">Endpoint FIFO Data Register</font></td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC"><font size="-1"><b>0x74</b></font></td><td><font size="-1"><a href="AT91SAM7S256_UDP.html#UDP_TXVC">UDP_TXVC</a></font></td><td><font size="-1">Transceiver Control Register</font></td></tr>
</null></table><br><table border=1 cellpadding=0 cellspacing=0 width="100%"><null><th bgcolor="#FFFFCC"><font size="-1"><b>Function</b></font></th><th bgcolor="#FFFFCC"><font size="-1"><b>Description</b></font></th><tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_EpClear">AT91F_UDP_EpClear</a></b></font></td><td><font size="-1">Clear flag in the endpoint CSR register</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_ResetEp">AT91F_UDP_ResetEp</a></b></font></td><td><font size="-1">Reset UDP endpoint</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_EpWrite">AT91F_UDP_EpWrite</a></b></font></td><td><font size="-1">Write value in the DPR</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_EnableTransceiver">AT91F_UDP_EnableTransceiver</a></b></font></td><td><font size="-1">Enable transceiver</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_EnableIt">AT91F_UDP_EnableIt</a></b></font></td><td><font size="-1">Enable UDP IT</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_InterruptStatusRegister">AT91F_UDP_InterruptStatusRegister</a></b></font></td><td><font size="-1">Return the Interrupt Status Register</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_EpSet">AT91F_UDP_EpSet</a></b></font></td><td><font size="-1">Set flag in the endpoint CSR register</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_DisableTransceiver">AT91F_UDP_DisableTransceiver</a></b></font></td><td><font size="-1">Disable transceiver</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_InterruptClearRegister">AT91F_UDP_InterruptClearRegister</a></b></font></td><td><font size="-1">Clear Interrupt Register</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_DisableEp">AT91F_UDP_DisableEp</a></b></font></td><td><font size="-1">Enable Endpoint</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_EpStall">AT91F_UDP_EpStall</a></b></font></td><td><font size="-1">Endpoint will STALL requests</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_EpRead">AT91F_UDP_EpRead</a></b></font></td><td><font size="-1">Return value from the DPR</font></td></tr>
<tr><td bgcolor="#FFFFCC"><font size="-1"><b><a href="lib_AT91SAM7S256_h.html#AT91F_UDP_SetAddress">AT91F_UDP_SetAddress</a></b></font></td><td><font size="-1">Set UDP functional address</font></td></tr>
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