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| <title>SAM3N RSTC</title> |
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| <body id="abstract"> |
| <div id="container"> |
| <div id="content"> |
| <a id="RSTC"></a> |
| <h1>SAM3N RSTC</h1> |
| <a id="RSTC__User_Interface"></a> |
| <h2>Reset Controller (RSTC) User Interface</h2> |
| <!--As per 11009A programmer datasheet.--> |
| <h3>Registers</h3> |
| <table class="registers"> |
| <caption>Register Mapping</caption> |
| <thead> |
| <tr> |
| <th class="address">Address</th> |
| <th class="description">Register</th> |
| <th class="name">Name</th> |
| <th class="access">Access</th> |
| <th class="reset">Reset</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr class="odd"> |
| <td class="address" id="address_0x400E1400">0x400E1400</td> |
| <td class="description">Control Register</td> |
| <td class="name"> |
| <a href="#RSTC_CR" title="Control Register" class="one_click_away">RSTC_CR</a> |
| </td> |
| <td class="access">write-only</td> |
| <td class="address">-</td> |
| </tr> |
| <tr class="even"> |
| <td class="address" id="address_0x400E1404">0x400E1404</td> |
| <td class="description">Status Register</td> |
| <td class="name"> |
| <a href="#RSTC_SR" title="Status Register" class="one_click_away">RSTC_SR</a> |
| </td> |
| <td class="access">read-only</td> |
| <td class="address">0x00000000</td> |
| </tr> |
| <tr class="odd"> |
| <td class="address" id="address_0x400E1408">0x400E1408</td> |
| <td class="description">Mode Register</td> |
| <td class="name"> |
| <a href="#RSTC_MR" title="Mode Register" class="one_click_away">RSTC_MR</a> |
| </td> |
| <td class="access">read-write</td> |
| <td class="address">0x00000001</td> |
| </tr> |
| </tbody> |
| </table> |
| <h3>Register Fields</h3> |
| <h4 id="RSTC_CR">RSTC Control Register</h4> |
| <p><strong>Name</strong>: RSTC_CR</p> |
| <p><strong>Access</strong>: write-only</p> |
| <p><strong>Address</strong>: 0x400E1400</p> |
| <table class="fields"> |
| <tbody> |
| <tr class="offsets"> |
| <td>31</td> |
| <td>30</td> |
| <td>29</td> |
| <td>28</td> |
| <td>27</td> |
| <td>26</td> |
| <td>25</td> |
| <td>24</td> |
| </tr> |
| <tr class="fields"> |
| <td colspan="8"> |
| <a href="#RSTC_CR__KEY" title="Password">KEY</a> |
| </td> |
| </tr> |
| <tr class="offsets"> |
| <td>23</td> |
| <td>22</td> |
| <td>21</td> |
| <td>20</td> |
| <td>19</td> |
| <td>18</td> |
| <td>17</td> |
| <td>16</td> |
| </tr> |
| <tr class="fields"> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| </tr> |
| <tr class="offsets"> |
| <td>15</td> |
| <td>14</td> |
| <td>13</td> |
| <td>12</td> |
| <td>11</td> |
| <td>10</td> |
| <td>9</td> |
| <td>8</td> |
| </tr> |
| <tr class="fields"> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| </tr> |
| <tr class="offsets"> |
| <td>7</td> |
| <td>6</td> |
| <td>5</td> |
| <td>4</td> |
| <td>3</td> |
| <td>2</td> |
| <td>1</td> |
| <td>0</td> |
| </tr> |
| <tr class="fields"> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td colspan="1"> |
| <a href="#RSTC_CR__EXTRST" title="External Reset">EXTRST</a> |
| </td> |
| <td colspan="1"> |
| <a href="#RSTC_CR__PERRST" title="Peripheral Reset">PERRST</a> |
| </td> |
| <td>-</td> |
| <td colspan="1"> |
| <a href="#RSTC_CR__PROCRST" title="Processor Reset">PROCRST</a> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <ul class="values"> |
| <li id="RSTC_CR__PROCRST"><strong>PROCRST</strong>: Processor Reset<table class="values"><thead><tr><th>Value</th><th>Name</th><th>Description</th></tr></thead><tbody><tr class="odd"><td class="value">0</td><td class="name">-</td><td class="description">No effect.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">If KEY is correct, resets the processor.</td></tr></tbody></table></li> |
| <li id="RSTC_CR__PERRST"><strong>PERRST</strong>: Peripheral Reset<table class="values"><thead><tr><th>Value</th><th>Name</th><th>Description</th></tr></thead><tbody><tr class="odd"><td class="value">0</td><td class="name">-</td><td class="description">No effect.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">If KEY is correct, resets the peripherals.</td></tr></tbody></table></li> |
| <li id="RSTC_CR__EXTRST"><strong>EXTRST</strong>: External Reset<table class="values"><thead><tr><th>Value</th><th>Name</th><th>Description</th></tr></thead><tbody><tr class="odd"><td class="value">0</td><td class="name">-</td><td class="description">No effect.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">If KEY is correct, asserts the NRST pin.</td></tr></tbody></table></li> |
| <li id="RSTC_CR__KEY"><strong>KEY</strong>: Password</li> |
| <p>-</p> |
| </ul> |
| <h4 id="RSTC_SR">RSTC Status Register</h4> |
| <p><strong>Name</strong>: RSTC_SR</p> |
| <p><strong>Access</strong>: read-only</p> |
| <p><strong>Address</strong>: 0x400E1404</p> |
| <table class="fields"> |
| <tbody> |
| <tr class="offsets"> |
| <td>31</td> |
| <td>30</td> |
| <td>29</td> |
| <td>28</td> |
| <td>27</td> |
| <td>26</td> |
| <td>25</td> |
| <td>24</td> |
| </tr> |
| <tr class="fields"> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| </tr> |
| <tr class="offsets"> |
| <td>23</td> |
| <td>22</td> |
| <td>21</td> |
| <td>20</td> |
| <td>19</td> |
| <td>18</td> |
| <td>17</td> |
| <td>16</td> |
| </tr> |
| <tr class="fields"> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td colspan="1"> |
| <a href="#RSTC_SR__SRCMP" title="Software Reset Command in Progress">SRCMP</a> |
| </td> |
| <td colspan="1"> |
| <a href="#RSTC_SR__NRSTL" title="NRST Pin Level">NRSTL</a> |
| </td> |
| </tr> |
| <tr class="offsets"> |
| <td>15</td> |
| <td>14</td> |
| <td>13</td> |
| <td>12</td> |
| <td>11</td> |
| <td>10</td> |
| <td>9</td> |
| <td>8</td> |
| </tr> |
| <tr class="fields"> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td colspan="3"> |
| <a href="#RSTC_SR__RSTTYP" title="Reset Type">RSTTYP</a> |
| </td> |
| </tr> |
| <tr class="offsets"> |
| <td>7</td> |
| <td>6</td> |
| <td>5</td> |
| <td>4</td> |
| <td>3</td> |
| <td>2</td> |
| <td>1</td> |
| <td>0</td> |
| </tr> |
| <tr class="fields"> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td colspan="1"> |
| <a href="#RSTC_SR__URSTS" title="User Reset Status">URSTS</a> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <ul class="values"> |
| <li id="RSTC_SR__URSTS"><strong>URSTS</strong>: User Reset Status<table class="values"><thead><tr><th>Value</th><th>Name</th><th>Description</th></tr></thead><tbody><tr class="odd"><td class="value">0</td><td class="name">-</td><td class="description">No high-to-low edge on NRST happened since the last read of RSTC_SR.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">At least one high-to-low transition of NRST has been detected since the last read of RSTC_SR.</td></tr></tbody></table></li> |
| <li id="RSTC_SR__RSTTYP"><strong>RSTTYP</strong>: Reset Type</li> |
| <p>-</p> |
| <li id="RSTC_SR__NRSTL"><strong>NRSTL</strong>: NRST Pin Level</li> |
| <p>-</p> |
| <li id="RSTC_SR__SRCMP"><strong>SRCMP</strong>: Software Reset Command in Progress<table class="values"><thead><tr><th>Value</th><th>Name</th><th>Description</th></tr></thead><tbody><tr class="odd"><td class="value">0</td><td class="name">-</td><td class="description">No software command is being performed by the reset controller. The reset controller is ready for a software command.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">A software reset command is being performed by the reset controller. The reset controller is busy.</td></tr></tbody></table></li> |
| </ul> |
| <h4 id="RSTC_MR">RSTC Mode Register</h4> |
| <p><strong>Name</strong>: RSTC_MR</p> |
| <p><strong>Access</strong>: read-write</p> |
| <p><strong>Address</strong>: 0x400E1408</p> |
| <table class="fields"> |
| <tbody> |
| <tr class="offsets"> |
| <td>31</td> |
| <td>30</td> |
| <td>29</td> |
| <td>28</td> |
| <td>27</td> |
| <td>26</td> |
| <td>25</td> |
| <td>24</td> |
| </tr> |
| <tr class="fields"> |
| <td colspan="8"> |
| <a href="#RSTC_MR__KEY" title="Password">KEY</a> |
| </td> |
| </tr> |
| <tr class="offsets"> |
| <td>23</td> |
| <td>22</td> |
| <td>21</td> |
| <td>20</td> |
| <td>19</td> |
| <td>18</td> |
| <td>17</td> |
| <td>16</td> |
| </tr> |
| <tr class="fields"> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| </tr> |
| <tr class="offsets"> |
| <td>15</td> |
| <td>14</td> |
| <td>13</td> |
| <td>12</td> |
| <td>11</td> |
| <td>10</td> |
| <td>9</td> |
| <td>8</td> |
| </tr> |
| <tr class="fields"> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td colspan="4"> |
| <a href="#RSTC_MR__ERSTL" title="External Reset Length">ERSTL</a> |
| </td> |
| </tr> |
| <tr class="offsets"> |
| <td>7</td> |
| <td>6</td> |
| <td>5</td> |
| <td>4</td> |
| <td>3</td> |
| <td>2</td> |
| <td>1</td> |
| <td>0</td> |
| </tr> |
| <tr class="fields"> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td colspan="1"> |
| <a href="#RSTC_MR__URSTIEN" title="User Reset Interrupt Enable">URSTIEN</a> |
| </td> |
| <td>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td colspan="1"> |
| <a href="#RSTC_MR__URSTEN" title="User Reset Enable">URSTEN</a> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <ul class="values"> |
| <li id="RSTC_MR__URSTEN"><strong>URSTEN</strong>: User Reset Enable<table class="values"><thead><tr><th>Value</th><th>Name</th><th>Description</th></tr></thead><tbody><tr class="odd"><td class="value">0</td><td class="name">-</td><td class="description">The detection of a low level on the pin NRST does not generate a User Reset.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">The detection of a low level on the pin NRST triggers a User Reset.</td></tr></tbody></table></li> |
| <li id="RSTC_MR__URSTIEN"><strong>URSTIEN</strong>: User Reset Interrupt Enable<table class="values"><thead><tr><th>Value</th><th>Name</th><th>Description</th></tr></thead><tbody><tr class="odd"><td class="value">0</td><td class="name">-</td><td class="description">USRTS bit in RSTC_SR at 1 has no effect on rstc_irq.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">USRTS bit in RSTC_SR at 1 asserts rstc_irq if URSTEN = 0.</td></tr></tbody></table></li> |
| <li id="RSTC_MR__ERSTL"><strong>ERSTL</strong>: External Reset Length</li> |
| <p>-</p> |
| <li id="RSTC_MR__KEY"><strong>KEY</strong>: Password</li> |
| <p>-</p> |
| </ul> |
| </div> |
| </div> |
| </body> |
| </html> |