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| <title>SAM3S8 WDT</title> |
| <link rel="stylesheet" type="text/css" href="css/html.css" media="all" /> |
| </head> |
| <body id="abstract"> |
| <div id="container"> |
| <div id="content"> |
| <a id="WDT"></a> |
| <h1>SAM3S8 WDT</h1> |
| <a id="WDT__User_Interface"></a> |
| <h2>Watchdog Timer (WDT) User Interface</h2> |
| <!--As per 6080B 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_0x400E1450">0x400E1450</td> |
| <td class="description">Control Register</td> |
| <td class="name"> |
| <a href="#WDT_CR" title="Control Register" class="one_click_away">WDT_CR</a> |
| </td> |
| <td class="access">write-only</td> |
| <td class="address">-</td> |
| </tr> |
| <tr class="even"> |
| <td class="address" id="address_0x400E1454">0x400E1454</td> |
| <td class="description">Mode Register</td> |
| <td class="name"> |
| <a href="#WDT_MR" title="Mode Register" class="one_click_away">WDT_MR</a> |
| </td> |
| <td class="access">read-write</td> |
| <td class="address">0x3FFF2FFF</td> |
| </tr> |
| <tr class="odd"> |
| <td class="address" id="address_0x400E1458">0x400E1458</td> |
| <td class="description">Status Register</td> |
| <td class="name"> |
| <a href="#WDT_SR" title="Status Register" class="one_click_away">WDT_SR</a> |
| </td> |
| <td class="access">read-only</td> |
| <td class="address">0x00000000</td> |
| </tr> |
| </tbody> |
| </table> |
| <h3>Register Fields</h3> |
| <h4 id="WDT_CR">WDT Control Register</h4> |
| <p><strong>Name</strong>: WDT_CR</p> |
| <p><strong>Access</strong>: write-only</p> |
| <p><strong>Address</strong>: 0x400E1450</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="#WDT_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>-</td> |
| <td>-</td> |
| <td>-</td> |
| <td colspan="1"> |
| <a href="#WDT_CR__WDRSTT" title="Watchdog Restart">WDRSTT</a> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <ul class="values"> |
| <li id="WDT_CR__WDRSTT"><strong>WDRSTT</strong>: Watchdog Restart<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">Restarts the Watchdog.</td></tr></tbody></table></li> |
| <li id="WDT_CR__KEY"><strong>KEY</strong>: Password</li> |
| <p>-</p> |
| </ul> |
| <h4 id="WDT_MR">WDT Mode Register</h4> |
| <p><strong>Name</strong>: WDT_MR</p> |
| <p><strong>Access</strong>: read-write</p> |
| <p><strong>Address</strong>: 0x400E1454</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 colspan="1"> |
| <a href="#WDT_MR__WDIDLEHLT" title="Watchdog Idle Halt">WDIDLEHLT</a> |
| </td> |
| <td colspan="1"> |
| <a href="#WDT_MR__WDDBGHLT" title="Watchdog Debug Halt">WDDBGHLT</a> |
| </td> |
| <td colspan="4"> |
| <a href="#WDT_MR__WDD" title="Watchdog Delta Value">WDD</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 colspan="8"> |
| <a href="#WDT_MR__WDD" title="Watchdog Delta Value">WDD</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 colspan="1"> |
| <a href="#WDT_MR__WDDIS" title="Watchdog Disable">WDDIS</a> |
| </td> |
| <td colspan="1"> |
| <a href="#WDT_MR__WDRPROC" title="Watchdog Reset Processor">WDRPROC</a> |
| </td> |
| <td colspan="1"> |
| <a href="#WDT_MR__WDRSTEN" title="Watchdog Reset Enable">WDRSTEN</a> |
| </td> |
| <td colspan="1"> |
| <a href="#WDT_MR__WDFIEN" title="Watchdog Fault Interrupt Enable">WDFIEN</a> |
| </td> |
| <td colspan="4"> |
| <a href="#WDT_MR__WDV" title="Watchdog Counter Value">WDV</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 colspan="8"> |
| <a href="#WDT_MR__WDV" title="Watchdog Counter Value">WDV</a> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <ul class="values"> |
| <li id="WDT_MR__WDV"><strong>WDV</strong>: Watchdog Counter Value</li> |
| <p>-</p> |
| <li id="WDT_MR__WDFIEN"><strong>WDFIEN</strong>: Watchdog Fault 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">A Watchdog fault (underflow or error) has no effect on interrupt.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">A Watchdog fault (underflow or error) asserts interrupt.</td></tr></tbody></table></li> |
| <li id="WDT_MR__WDRSTEN"><strong>WDRSTEN</strong>: Watchdog 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">A Watchdog fault (underflow or error) has no effect on the resets.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">A Watchdog fault (underflow or error) triggers a Watchdog reset.</td></tr></tbody></table></li> |
| <li id="WDT_MR__WDRPROC"><strong>WDRPROC</strong>: Watchdog Reset Processor<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">If WDRSTEN is 1, a Watchdog fault (underflow or error) activates all resets.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">If WDRSTEN is 1, a Watchdog fault (underflow or error) activates the processor reset.</td></tr></tbody></table></li> |
| <li id="WDT_MR__WDDIS"><strong>WDDIS</strong>: Watchdog Disable<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">Enables the Watchdog Timer.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">Disables the Watchdog Timer.</td></tr></tbody></table></li> |
| <li id="WDT_MR__WDD"><strong>WDD</strong>: Watchdog Delta Value</li> |
| <p>-</p> |
| <li id="WDT_MR__WDDBGHLT"><strong>WDDBGHLT</strong>: Watchdog Debug Halt<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 Watchdog runs when the processor is in debug state.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">The Watchdog stops when the processor is in debug state.</td></tr></tbody></table></li> |
| <li id="WDT_MR__WDIDLEHLT"><strong>WDIDLEHLT</strong>: Watchdog Idle Halt<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 Watchdog runs when the system is in idle mode.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">The Watchdog stops when the system is in idle state.</td></tr></tbody></table></li> |
| </ul> |
| <h4 id="WDT_SR">WDT Status Register</h4> |
| <p><strong>Name</strong>: WDT_SR</p> |
| <p><strong>Access</strong>: read-only</p> |
| <p><strong>Address</strong>: 0x400E1458</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>-</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>-</td> |
| <td>-</td> |
| <td colspan="1"> |
| <a href="#WDT_SR__WDERR" title="Watchdog Error">WDERR</a> |
| </td> |
| <td colspan="1"> |
| <a href="#WDT_SR__WDUNF" title="Watchdog Underflow">WDUNF</a> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| <ul class="values"> |
| <li id="WDT_SR__WDUNF"><strong>WDUNF</strong>: Watchdog Underflow<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 Watchdog underflow occurred since the last read of WDT_SR.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">At least one Watchdog underflow occurred since the last read of WDT_SR.</td></tr></tbody></table></li> |
| <li id="WDT_SR__WDERR"><strong>WDERR</strong>: Watchdog Error<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 Watchdog error occurred since the last read of WDT_SR.</td></tr><tr class="even"><td class="value">1</td><td class="name">-</td><td class="description">At least one Watchdog error occurred since the last read of WDT_SR.</td></tr></tbody></table></li> |
| </ul> |
| </div> |
| </div> |
| </body> |
| </html> |