at91sam7x256_mc.html

ATMEL公司的demo程序,USB驱动程序,与识别片上flash,并进行枚举和操作.

<tr><td align="CENTER">2</td><td align="CENTER"><a name="MC_FWS_2FWS"></a><b>MC_FWS_2FWS</b><font size="-1"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FWS_2FWS">AT91C_MC_FWS_2FWS</a></font></td><td><br>3 cycles for Read, 4 for Write operations</td></tr>
<tr><td align="CENTER">3</td><td align="CENTER"><a name="MC_FWS_3FWS"></a><b>MC_FWS_3FWS</b><font size="-1"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FWS_3FWS">AT91C_MC_FWS_3FWS</a></font></td><td><br>4 cycles for Read, 4 for Write operations</td></tr>
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<tr><td align="CENTER" bgcolor="#FFFFCC">23..16</td><td align="CENTER"><a name="MC_FMCN"></a><b>MC_FMCN</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FMCN">AT91C_MC_FMCN</a></font></td><td><b>Flash Microsecond Cycle Number</b><br>This field defines the number of Master Clock cycles in one microsecond.</td></tr>
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<a name="MC_FCR"></a><h4><a href="#MC">MC</a>: <i><a href="AT91SAM7X256_h.html#AT91_REG">AT91_REG</a></i> MC_FCR  <i>MC Flash Command Register</i></h4><ul><null><font size="-2"><li><b>MC</b> <i><a href="AT91SAM7X256_h.html#AT91C_MC_FCR">AT91C_MC_FCR</a></i> 0xFFFFFF64</font></null></ul><table border=1 cellpadding=0 cellspacing=0 width="100%"><null><th bgcolor="#FFFFCC"><b>Offset</b></th><th bgcolor="#FFFFCC"><b>Name</b></th><th bgcolor="#FFFFCC"><b>Description</b></th><tr><td align="CENTER" bgcolor="#FFFFCC">3..0</td><td align="CENTER"><a name="MC_FCMD"></a><b>MC_FCMD</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FCMD">AT91C_MC_FCMD</a></font></td><td><b>Flash Command</b><br>This field defines the different flash commands.<font size="-1"><table bgcolor="#E3F2FF" border=1 cellpadding=0 cellspacing=0 width="100%"><null><th><b>Value</b></th><th><b>Label</b></th><th><b>Description</b></th><tr><td align="CENTER">1</td><td align="CENTER"><a name="MC_FCMD_START_PROG"></a><b>MC_FCMD_START_PROG</b><font size="-1"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FCMD_START_PROG">AT91C_MC_FCMD_START_PROG</a></font></td><td><br>Starts the programming of th epage specified by PAGEN.</td></tr>
<tr><td align="CENTER">2</td><td align="CENTER"><a name="MC_FCMD_LOCK"></a><b>MC_FCMD_LOCK</b><font size="-1"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FCMD_LOCK">AT91C_MC_FCMD_LOCK</a></font></td><td><br>Starts a lock sequence of the sector defined by the bits 4 to 7 of the field PAGEN.</td></tr>
<tr><td align="CENTER">3</td><td align="CENTER"><a name="MC_FCMD_PROG_AND_LOCK"></a><b>MC_FCMD_PROG_AND_LOCK</b><font size="-1"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FCMD_PROG_AND_LOCK">AT91C_MC_FCMD_PROG_AND_LOCK</a></font></td><td><br>The lock sequence automatically happens after the programming sequence is completed.</td></tr>
<tr><td align="CENTER">4</td><td align="CENTER"><a name="MC_FCMD_UNLOCK"></a><b>MC_FCMD_UNLOCK</b><font size="-1"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FCMD_UNLOCK">AT91C_MC_FCMD_UNLOCK</a></font></td><td><br>Starts an unlock sequence of the sector defined by the bits 4 to 7 of the field PAGEN.</td></tr>
<tr><td align="CENTER">8</td><td align="CENTER"><a name="MC_FCMD_ERASE_ALL"></a><b>MC_FCMD_ERASE_ALL</b><font size="-1"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FCMD_ERASE_ALL">AT91C_MC_FCMD_ERASE_ALL</a></font></td><td><br>Starts the erase of the entire flash.If at least a page is locked, the command is cancelled.</td></tr>
<tr><td align="CENTER">11</td><td align="CENTER"><a name="MC_FCMD_SET_GP_NVM"></a><b>MC_FCMD_SET_GP_NVM</b><font size="-1"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FCMD_SET_GP_NVM">AT91C_MC_FCMD_SET_GP_NVM</a></font></td><td><br>Set General Purpose NVM bits.</td></tr>
<tr><td align="CENTER">13</td><td align="CENTER"><a name="MC_FCMD_CLR_GP_NVM"></a><b>MC_FCMD_CLR_GP_NVM</b><font size="-1"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FCMD_CLR_GP_NVM">AT91C_MC_FCMD_CLR_GP_NVM</a></font></td><td><br>Clear General Purpose NVM bits.</td></tr>
<tr><td align="CENTER">15</td><td align="CENTER"><a name="MC_FCMD_SET_SECURITY"></a><b>MC_FCMD_SET_SECURITY</b><font size="-1"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FCMD_SET_SECURITY">AT91C_MC_FCMD_SET_SECURITY</a></font></td><td><br>Set Security Bit.</td></tr>
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<tr><td align="CENTER" bgcolor="#FFFFCC">17..8</td><td align="CENTER"><a name="MC_PAGEN"></a><b>MC_PAGEN</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_PAGEN">AT91C_MC_PAGEN</a></font></td><td><b>Page Number</b><br>Please, refer to the corresponding datasheet</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">31..24</td><td align="CENTER"><a name="MC_KEY"></a><b>MC_KEY</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_KEY">AT91C_MC_KEY</a></font></td><td><b>Writing Protect Key</b><br>This field should be written with the value 0x5A to enable the command defined by the bits of the register.<br>If the field is written with a different value, the write is actually not performed and no action is started.</td></tr>
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<a name="MC_FSR"></a><h4><a href="#MC">MC</a>: <i><a href="AT91SAM7X256_h.html#AT91_REG">AT91_REG</a></i> MC_FSR  <i>MC Flash Status Register</i></h4><ul><null><font size="-2"><li><b>MC</b> <i><a href="AT91SAM7X256_h.html#AT91C_MC_FSR">AT91C_MC_FSR</a></i> 0xFFFFFF68</font></null></ul><table border=1 cellpadding=0 cellspacing=0 width="100%"><null><th bgcolor="#FFFFCC"><b>Offset</b></th><th bgcolor="#FFFFCC"><b>Name</b></th><th bgcolor="#FFFFCC"><b>Description</b></th><tr><td align="CENTER" bgcolor="#FFFFCC">0</td><td align="CENTER"><a name="MC_FRDY"></a><b>MC_FRDY</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_FRDY">AT91C_MC_FRDY</a></font></td><td><b>Flash Ready</b><br>0 = FRDY high in MC_FSR does not generate an interrupt<br>1= FRDY high in MC_FSR generates an interrupt</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">2</td><td align="CENTER"><a name="MC_LOCKE"></a><b>MC_LOCKE</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKE">AT91C_MC_LOCKE</a></font></td><td><b>Lock Error</b><br>0 = LOCKE high in MC_FSR does not generate an interrupt<br>1 = LOCKE high in MC_FSR generates an interrupt</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">3</td><td align="CENTER"><a name="MC_PROGE"></a><b>MC_PROGE</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_PROGE">AT91C_MC_PROGE</a></font></td><td><b>Programming Error</b><br>0 = PROGE high in MC_FSR does not generate an interrupt<br>1 = PROGE high in MC_FSR generates an interrupt</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">4</td><td align="CENTER"><a name="MC_SECURITY"></a><b>MC_SECURITY</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_SECURITY">AT91C_MC_SECURITY</a></font></td><td><b>Security Bit Status</b><br>0: Security Bit is not set.<br> 1:Security Bit is set.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">8</td><td align="CENTER"><a name="MC_GPNVM0"></a><b>MC_GPNVM0</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_GPNVM0">AT91C_MC_GPNVM0</a></font></td><td><b>Sector 0 Lock Status</b><br>0: General purpose NVM bit is not set.<br> 1:General purpose NVM bit is set.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">9</td><td align="CENTER"><a name="MC_GPNVM1"></a><b>MC_GPNVM1</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_GPNVM1">AT91C_MC_GPNVM1</a></font></td><td><b>Sector 1 Lock Status</b><br>0: General purpose NVM bit is not set.<br> 1:General purpose NVM bit is set.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">10</td><td align="CENTER"><a name="MC_GPNVM2"></a><b>MC_GPNVM2</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_GPNVM2">AT91C_MC_GPNVM2</a></font></td><td><b>Sector 2 Lock Status</b><br>0: General purpose NVM bit is not set.<br> 1:General purpose NVM bit is set.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">11</td><td align="CENTER"><a name="MC_GPNVM3"></a><b>MC_GPNVM3</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_GPNVM3">AT91C_MC_GPNVM3</a></font></td><td><b>Sector 3 Lock Status</b><br>0: General purpose NVM bit is not set.<br> 1:General purpose NVM bit is set.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">12</td><td align="CENTER"><a name="MC_GPNVM4"></a><b>MC_GPNVM4</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_GPNVM4">AT91C_MC_GPNVM4</a></font></td><td><b>Sector 4 Lock Status</b><br>0: General purpose NVM bit is not set.<br> 1:General purpose NVM bit is set.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">13</td><td align="CENTER"><a name="MC_GPNVM5"></a><b>MC_GPNVM5</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_GPNVM5">AT91C_MC_GPNVM5</a></font></td><td><b>Sector 5 Lock Status</b><br>0: General purpose NVM bit is not set.<br> 1:General purpose NVM bit is set.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">14</td><td align="CENTER"><a name="MC_GPNVM6"></a><b>MC_GPNVM6</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_GPNVM6">AT91C_MC_GPNVM6</a></font></td><td><b>Sector 6 Lock Status</b><br>0: General purpose NVM bit is not set.<br> 1:General purpose NVM bit is set.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">15</td><td align="CENTER"><a name="MC_GPNVM7"></a><b>MC_GPNVM7</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_GPNVM7">AT91C_MC_GPNVM7</a></font></td><td><b>Sector 7 Lock Status</b><br>0: General purpose NVM bit is not set.<br> 1:General purpose NVM bit is set.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">16</td><td align="CENTER"><a name="MC_LOCKS0"></a><b>MC_LOCKS0</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS0">AT91C_MC_LOCKS0</a></font></td><td><b>Sector 0 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">17</td><td align="CENTER"><a name="MC_LOCKS1"></a><b>MC_LOCKS1</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS1">AT91C_MC_LOCKS1</a></font></td><td><b>Sector 1 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">18</td><td align="CENTER"><a name="MC_LOCKS2"></a><b>MC_LOCKS2</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS2">AT91C_MC_LOCKS2</a></font></td><td><b>Sector 2 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">19</td><td align="CENTER"><a name="MC_LOCKS3"></a><b>MC_LOCKS3</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS3">AT91C_MC_LOCKS3</a></font></td><td><b>Sector 3 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">20</td><td align="CENTER"><a name="MC_LOCKS4"></a><b>MC_LOCKS4</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS4">AT91C_MC_LOCKS4</a></font></td><td><b>Sector 4 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">21</td><td align="CENTER"><a name="MC_LOCKS5"></a><b>MC_LOCKS5</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS5">AT91C_MC_LOCKS5</a></font></td><td><b>Sector 5 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">22</td><td align="CENTER"><a name="MC_LOCKS6"></a><b>MC_LOCKS6</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS6">AT91C_MC_LOCKS6</a></font></td><td><b>Sector 6 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">23</td><td align="CENTER"><a name="MC_LOCKS7"></a><b>MC_LOCKS7</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS7">AT91C_MC_LOCKS7</a></font></td><td><b>Sector 7 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">24</td><td align="CENTER"><a name="MC_LOCKS8"></a><b>MC_LOCKS8</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS8">AT91C_MC_LOCKS8</a></font></td><td><b>Sector 8 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">25</td><td align="CENTER"><a name="MC_LOCKS9"></a><b>MC_LOCKS9</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS9">AT91C_MC_LOCKS9</a></font></td><td><b>Sector 9 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">26</td><td align="CENTER"><a name="MC_LOCKS10"></a><b>MC_LOCKS10</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS10">AT91C_MC_LOCKS10</a></font></td><td><b>Sector 10 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">27</td><td align="CENTER"><a name="MC_LOCKS11"></a><b>MC_LOCKS11</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS11">AT91C_MC_LOCKS11</a></font></td><td><b>Sector 11 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">28</td><td align="CENTER"><a name="MC_LOCKS12"></a><b>MC_LOCKS12</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS12">AT91C_MC_LOCKS12</a></font></td><td><b>Sector 12 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">29</td><td align="CENTER"><a name="MC_LOCKS13"></a><b>MC_LOCKS13</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS13">AT91C_MC_LOCKS13</a></font></td><td><b>Sector 13 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">30</td><td align="CENTER"><a name="MC_LOCKS14"></a><b>MC_LOCKS14</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS14">AT91C_MC_LOCKS14</a></font></td><td><b>Sector 14 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
<tr><td align="CENTER" bgcolor="#FFFFCC">31</td><td align="CENTER"><a name="MC_LOCKS15"></a><b>MC_LOCKS15</b><font size="-2"><br><a href="AT91SAM7X256_h.html#AT91C_MC_LOCKS15">AT91C_MC_LOCKS15</a></font></td><td><b>Sector 15 Lock Status</b><br>0: The corresponding sector is not locked.<br> 1:The corresponding sector is locked.</td></tr>
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