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<title>AmbiqSuite User Guide: AmbiqSuite Apollo Device Register Overview</title>
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<img alt="Logo" src="../resources/am_logo.png" />
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</td>
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<td style="padding-left: 0.5em;">
|
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<div id="projectname">Apollo Register Documentation  <span id="projectnumber">v2.4.2</span></div>
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</td>
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</tr>
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<!-- window showing the filter options -->
|
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<div class="header">
|
||||
<div class="headertitle">
|
||||
<div class="title">SYSTICK - ARM System Timer (SysTick) Block Registers.</div>
|
||||
</div>
|
||||
</div>
|
||||
<!--header-->
|
||||
<body>
|
||||
<br>
|
||||
<div class="panel panel-default">
|
||||
<div class="panel-heading">
|
||||
<h3 class="panel-title"> SYSTICK Register Index</h3>
|
||||
</div>
|
||||
<div class="panel-body">
|
||||
<table>
|
||||
<tr id="row_0_0_">
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">0xE000E010:</span>
|
||||
</td>
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<a class="el" href="#SYSTCSR" target="_self">SYSTCSR - SysTick Control and Status Register.</a>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr id="row_0_0_">
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">0xE000E014:</span>
|
||||
</td>
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<a class="el" href="#SYSTRVR" target="_self">SYSTRVR - SysTick Reload Value Register.</a>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr id="row_0_0_">
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">0xE000E018:</span>
|
||||
</td>
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<a class="el" href="#SYSTCVR" target="_self">SYSTCVR - SysTick Current Value Register.</a>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr id="row_0_0_">
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">0xE000E01C:</span>
|
||||
</td>
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<a class="el" href="#SYSTCALIB" target="_self">SYSTCALIB - SysTick Calibration Value Register.</a>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
</table>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="panel panel-default">
|
||||
<div class="panel-heading">
|
||||
<h3 id="SYSTCSR" class="panel-title">SYSTCSR - SysTick Control and Status Register.</h3>
|
||||
</div>
|
||||
<div class="panel-body">
|
||||
<h3>Address:</h3>
|
||||
<table style="margin:10px">
|
||||
<tr id="row_0_0_">
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">Instance 0 Address:</span>
|
||||
</td>
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">0xE000E010</span>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
</table>
|
||||
<h3>Description:</h3>
|
||||
<p>SysTick Control and Status Register.</p>
|
||||
<h3>Example Macro Usage:</h3>
|
||||
<pre style="margin:10px" class="language-pascal"><span style='color:#3f7f59; '>//
|
||||
// All macro-based register writes follow the same basic format. For
|
||||
// single-instance modules, you may use the simpler AM_REG macro. For
|
||||
// multi-instance macros, you will need to specify the instance number using
|
||||
// the AM_REGn macro format.
|
||||
//
|
||||
// AM_REG(<MODULE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>_<VALUE>;
|
||||
// AM_REGn(<MODULE>, <INSTANCE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>_<VALUE>;
|
||||
//
|
||||
// For registers that do not have specific enumeration values, you may use this alternate format instead.
|
||||
//
|
||||
// AM_REG(<MODULE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>(<NUMBER>);
|
||||
//
|
||||
// For example, the following three lines of code are equivalent methods of
|
||||
// writing the value for 12MHZ to the CLKSEL field in the ADC_CFG register.
|
||||
//</span>
|
||||
AM_REG(ADC, CFG) |= AM_REG_ADC_CFG_CLKSEL_12MHZ;
|
||||
AM_REGn(ADC, 0, CFG) |= AM_REG_ADC_CFG_CLKSEL_12MHZ;
|
||||
AM_REG(ADC, CFG) |= AM_REG_ADC_CFG_CLKSEL(0x1);</pre>
|
||||
<h3>Register Fields:</h3>
|
||||
<table style="margin:10px" class="table table-bordered table-condensed">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>31</th>
|
||||
<th>30</th>
|
||||
<th>29</th>
|
||||
<th>28</th>
|
||||
<th>27</th>
|
||||
<th>26</th>
|
||||
<th>25</th>
|
||||
<th>24</th>
|
||||
<th>23</th>
|
||||
<th>22</th>
|
||||
<th>21</th>
|
||||
<th>20</th>
|
||||
<th>19</th>
|
||||
<th>18</th>
|
||||
<th>17</th>
|
||||
<th>16</th>
|
||||
<th>15</th>
|
||||
<th>14</th>
|
||||
<th>13</th>
|
||||
<th>12</th>
|
||||
<th>11</th>
|
||||
<th>10</th>
|
||||
<th>9</th>
|
||||
<th>8</th>
|
||||
<th>7</th>
|
||||
<th>6</th>
|
||||
<th>5</th>
|
||||
<th>4</th>
|
||||
<th>3</th>
|
||||
<th>2</th>
|
||||
<th>1</th>
|
||||
<th>0</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td align="center" colspan="15">RSVD
|
||||
<br>0x0</td>
|
||||
|
||||
<td align="center" colspan="1">COUNTFLAG
|
||||
<br>0x0</td>
|
||||
|
||||
<td align="center" colspan="14">RSVD
|
||||
<br>0x0</td>
|
||||
|
||||
<td align="center" colspan="1">TICKINT
|
||||
<br>0x0</td>
|
||||
|
||||
<td align="center" colspan="1">ENABLE
|
||||
<br>0x0</td>
|
||||
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
<br>
|
||||
|
||||
<table style="margin:10px" class="table table-bordered table-condensed">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Bits</th>
|
||||
<th>Name</th>
|
||||
<th>RW</th>
|
||||
<th>Description</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td>31:17</td>
|
||||
<td>RSVD</td>
|
||||
<td>RO</td>
|
||||
<td>RESERVED.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td>16</td>
|
||||
<td>COUNTFLAG</td>
|
||||
<td>RO</td>
|
||||
<td>Returns 1 if timer counted to 0 since last time this was read.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td>15:2</td>
|
||||
<td>RSVD</td>
|
||||
<td>RO</td>
|
||||
<td>RESERVED.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td>1</td>
|
||||
<td>TICKINT</td>
|
||||
<td>RW</td>
|
||||
<td>Enables SysTick exception request. Software can use COUNTFLAG to determine if SysTick has ever counted to zero. 0 = counting down to zero does not assert the SysTick exception request; 1 = counting down to zero asserts the SysTick exception request.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td>0</td>
|
||||
<td>ENABLE</td>
|
||||
<td>RW</td>
|
||||
<td>Enables the counter. 0 = counter disabled; 1 = counter enabled.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
</tbody>
|
||||
</table>
|
||||
<br>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="panel panel-default">
|
||||
<div class="panel-heading">
|
||||
<h3 id="SYSTRVR" class="panel-title">SYSTRVR - SysTick Reload Value Register.</h3>
|
||||
</div>
|
||||
<div class="panel-body">
|
||||
<h3>Address:</h3>
|
||||
<table style="margin:10px">
|
||||
<tr id="row_0_0_">
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">Instance 0 Address:</span>
|
||||
</td>
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">0xE000E014</span>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
</table>
|
||||
<h3>Description:</h3>
|
||||
<p>SysTick Reload Value Register.</p>
|
||||
<h3>Example Macro Usage:</h3>
|
||||
<pre style="margin:10px" class="language-pascal"><span style='color:#3f7f59; '>//
|
||||
// All macro-based register writes follow the same basic format. For
|
||||
// single-instance modules, you may use the simpler AM_REG macro. For
|
||||
// multi-instance macros, you will need to specify the instance number using
|
||||
// the AM_REGn macro format.
|
||||
//
|
||||
// AM_REG(<MODULE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>_<VALUE>;
|
||||
// AM_REGn(<MODULE>, <INSTANCE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>_<VALUE>;
|
||||
//
|
||||
// For registers that do not have specific enumeration values, you may use this alternate format instead.
|
||||
//
|
||||
// AM_REG(<MODULE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>(<NUMBER>);
|
||||
//
|
||||
// For example, the following three lines of code are equivalent methods of
|
||||
// writing the value for 12MHZ to the CLKSEL field in the ADC_CFG register.
|
||||
//</span>
|
||||
AM_REG(ADC, CFG) |= AM_REG_ADC_CFG_CLKSEL_12MHZ;
|
||||
AM_REGn(ADC, 0, CFG) |= AM_REG_ADC_CFG_CLKSEL_12MHZ;
|
||||
AM_REG(ADC, CFG) |= AM_REG_ADC_CFG_CLKSEL(0x1);</pre>
|
||||
<h3>Register Fields:</h3>
|
||||
<table style="margin:10px" class="table table-bordered table-condensed">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>31</th>
|
||||
<th>30</th>
|
||||
<th>29</th>
|
||||
<th>28</th>
|
||||
<th>27</th>
|
||||
<th>26</th>
|
||||
<th>25</th>
|
||||
<th>24</th>
|
||||
<th>23</th>
|
||||
<th>22</th>
|
||||
<th>21</th>
|
||||
<th>20</th>
|
||||
<th>19</th>
|
||||
<th>18</th>
|
||||
<th>17</th>
|
||||
<th>16</th>
|
||||
<th>15</th>
|
||||
<th>14</th>
|
||||
<th>13</th>
|
||||
<th>12</th>
|
||||
<th>11</th>
|
||||
<th>10</th>
|
||||
<th>9</th>
|
||||
<th>8</th>
|
||||
<th>7</th>
|
||||
<th>6</th>
|
||||
<th>5</th>
|
||||
<th>4</th>
|
||||
<th>3</th>
|
||||
<th>2</th>
|
||||
<th>1</th>
|
||||
<th>0</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td align="center" colspan="8">RSVD
|
||||
<br>0x0</td>
|
||||
|
||||
<td align="center" colspan="24">RELOAD
|
||||
<br>0x0</td>
|
||||
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
<br>
|
||||
|
||||
<table style="margin:10px" class="table table-bordered table-condensed">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Bits</th>
|
||||
<th>Name</th>
|
||||
<th>RW</th>
|
||||
<th>Description</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td>31:24</td>
|
||||
<td>RSVD</td>
|
||||
<td>RO</td>
|
||||
<td>RESERVED.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td>23:0</td>
|
||||
<td>RELOAD</td>
|
||||
<td>RW</td>
|
||||
<td>Value to load into the SYSTCVR register when the counter is enabled and when it reaches 0.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
</tbody>
|
||||
</table>
|
||||
<br>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="panel panel-default">
|
||||
<div class="panel-heading">
|
||||
<h3 id="SYSTCVR" class="panel-title">SYSTCVR - SysTick Current Value Register.</h3>
|
||||
</div>
|
||||
<div class="panel-body">
|
||||
<h3>Address:</h3>
|
||||
<table style="margin:10px">
|
||||
<tr id="row_0_0_">
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">Instance 0 Address:</span>
|
||||
</td>
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">0xE000E018</span>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
</table>
|
||||
<h3>Description:</h3>
|
||||
<p>SysTick Current Value Register.</p>
|
||||
<h3>Example Macro Usage:</h3>
|
||||
<pre style="margin:10px" class="language-pascal"><span style='color:#3f7f59; '>//
|
||||
// All macro-based register writes follow the same basic format. For
|
||||
// single-instance modules, you may use the simpler AM_REG macro. For
|
||||
// multi-instance macros, you will need to specify the instance number using
|
||||
// the AM_REGn macro format.
|
||||
//
|
||||
// AM_REG(<MODULE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>_<VALUE>;
|
||||
// AM_REGn(<MODULE>, <INSTANCE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>_<VALUE>;
|
||||
//
|
||||
// For registers that do not have specific enumeration values, you may use this alternate format instead.
|
||||
//
|
||||
// AM_REG(<MODULE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>(<NUMBER>);
|
||||
//
|
||||
// For example, the following three lines of code are equivalent methods of
|
||||
// writing the value for 12MHZ to the CLKSEL field in the ADC_CFG register.
|
||||
//</span>
|
||||
AM_REG(ADC, CFG) |= AM_REG_ADC_CFG_CLKSEL_12MHZ;
|
||||
AM_REGn(ADC, 0, CFG) |= AM_REG_ADC_CFG_CLKSEL_12MHZ;
|
||||
AM_REG(ADC, CFG) |= AM_REG_ADC_CFG_CLKSEL(0x1);</pre>
|
||||
<h3>Register Fields:</h3>
|
||||
<table style="margin:10px" class="table table-bordered table-condensed">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>31</th>
|
||||
<th>30</th>
|
||||
<th>29</th>
|
||||
<th>28</th>
|
||||
<th>27</th>
|
||||
<th>26</th>
|
||||
<th>25</th>
|
||||
<th>24</th>
|
||||
<th>23</th>
|
||||
<th>22</th>
|
||||
<th>21</th>
|
||||
<th>20</th>
|
||||
<th>19</th>
|
||||
<th>18</th>
|
||||
<th>17</th>
|
||||
<th>16</th>
|
||||
<th>15</th>
|
||||
<th>14</th>
|
||||
<th>13</th>
|
||||
<th>12</th>
|
||||
<th>11</th>
|
||||
<th>10</th>
|
||||
<th>9</th>
|
||||
<th>8</th>
|
||||
<th>7</th>
|
||||
<th>6</th>
|
||||
<th>5</th>
|
||||
<th>4</th>
|
||||
<th>3</th>
|
||||
<th>2</th>
|
||||
<th>1</th>
|
||||
<th>0</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td align="center" colspan="8">RSVD
|
||||
<br>0x0</td>
|
||||
|
||||
<td align="center" colspan="24">CURRENT
|
||||
<br>0x0</td>
|
||||
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
<br>
|
||||
|
||||
<table style="margin:10px" class="table table-bordered table-condensed">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Bits</th>
|
||||
<th>Name</th>
|
||||
<th>RW</th>
|
||||
<th>Description</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td>31:24</td>
|
||||
<td>RSVD</td>
|
||||
<td>RO</td>
|
||||
<td>RESERVED.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td>23:0</td>
|
||||
<td>CURRENT</td>
|
||||
<td>RW</td>
|
||||
<td>Reads return the current value of the SysTick counter. A write of any value clears the field to 0, and also clears the SYSTCSR COUNTFLAG bit to 0.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
</tbody>
|
||||
</table>
|
||||
<br>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="panel panel-default">
|
||||
<div class="panel-heading">
|
||||
<h3 id="SYSTCALIB" class="panel-title">SYSTCALIB - SysTick Calibration Value Register.</h3>
|
||||
</div>
|
||||
<div class="panel-body">
|
||||
<h3>Address:</h3>
|
||||
<table style="margin:10px">
|
||||
<tr id="row_0_0_">
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">Instance 0 Address:</span>
|
||||
</td>
|
||||
<td class="entry">
|
||||
<span style="width:32px;display:inline-block;"> </span>
|
||||
<span class="h5">0xE000E01C</span>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
</table>
|
||||
<h3>Description:</h3>
|
||||
<p>SysTick Calibration Value Register.</p>
|
||||
<h3>Example Macro Usage:</h3>
|
||||
<pre style="margin:10px" class="language-pascal"><span style='color:#3f7f59; '>//
|
||||
// All macro-based register writes follow the same basic format. For
|
||||
// single-instance modules, you may use the simpler AM_REG macro. For
|
||||
// multi-instance macros, you will need to specify the instance number using
|
||||
// the AM_REGn macro format.
|
||||
//
|
||||
// AM_REG(<MODULE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>_<VALUE>;
|
||||
// AM_REGn(<MODULE>, <INSTANCE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>_<VALUE>;
|
||||
//
|
||||
// For registers that do not have specific enumeration values, you may use this alternate format instead.
|
||||
//
|
||||
// AM_REG(<MODULE>, <REGISTER>) |= AM_REG_<MODULE>_<REGISTER>_<FIELD>(<NUMBER>);
|
||||
//
|
||||
// For example, the following three lines of code are equivalent methods of
|
||||
// writing the value for 12MHZ to the CLKSEL field in the ADC_CFG register.
|
||||
//</span>
|
||||
AM_REG(ADC, CFG) |= AM_REG_ADC_CFG_CLKSEL_12MHZ;
|
||||
AM_REGn(ADC, 0, CFG) |= AM_REG_ADC_CFG_CLKSEL_12MHZ;
|
||||
AM_REG(ADC, CFG) |= AM_REG_ADC_CFG_CLKSEL(0x1);</pre>
|
||||
<h3>Register Fields:</h3>
|
||||
<table style="margin:10px" class="table table-bordered table-condensed">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>31</th>
|
||||
<th>30</th>
|
||||
<th>29</th>
|
||||
<th>28</th>
|
||||
<th>27</th>
|
||||
<th>26</th>
|
||||
<th>25</th>
|
||||
<th>24</th>
|
||||
<th>23</th>
|
||||
<th>22</th>
|
||||
<th>21</th>
|
||||
<th>20</th>
|
||||
<th>19</th>
|
||||
<th>18</th>
|
||||
<th>17</th>
|
||||
<th>16</th>
|
||||
<th>15</th>
|
||||
<th>14</th>
|
||||
<th>13</th>
|
||||
<th>12</th>
|
||||
<th>11</th>
|
||||
<th>10</th>
|
||||
<th>9</th>
|
||||
<th>8</th>
|
||||
<th>7</th>
|
||||
<th>6</th>
|
||||
<th>5</th>
|
||||
<th>4</th>
|
||||
<th>3</th>
|
||||
<th>2</th>
|
||||
<th>1</th>
|
||||
<th>0</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td align="center" colspan="1">NOREF
|
||||
<br>0x0</td>
|
||||
|
||||
<td align="center" colspan="1">SKEW
|
||||
<br>0x0</td>
|
||||
|
||||
<td align="center" colspan="6">RSVD
|
||||
<br>0x0</td>
|
||||
|
||||
<td align="center" colspan="24">TENMS
|
||||
<br>0x0</td>
|
||||
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
<br>
|
||||
|
||||
<table style="margin:10px" class="table table-bordered table-condensed">
|
||||
<thead>
|
||||
<tr>
|
||||
<th>Bits</th>
|
||||
<th>Name</th>
|
||||
<th>RW</th>
|
||||
<th>Description</th>
|
||||
</tr>
|
||||
</thead>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td>31</td>
|
||||
<td>NOREF</td>
|
||||
<td>RO</td>
|
||||
<td>Indicates whether the device provides a reference clock to the processor. 0 = reference clock provided; 1 = no reference clock provided. If your device does not provide a reference clock, the SYST_CSR.CLKSOURCE bit reads-as-one and ignores writes.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td>30</td>
|
||||
<td>SKEW</td>
|
||||
<td>RO</td>
|
||||
<td>Indicates whether the TENMS value is exact. 0 = TENMS value is exact; 1 = TENMS value is inexact, or not given. An inexact TENMS value can affect the suitability of SysTick as a software real time clock.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td>29:24</td>
|
||||
<td>RSVD</td>
|
||||
<td>RO</td>
|
||||
<td>RESERVED.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td>23:0</td>
|
||||
<td>TENMS</td>
|
||||
<td>RW</td>
|
||||
<td>Reload value for 10ms (100Hz) timing, subject to system clock skew errors. If the value reads as zero, the calibration value is not known.<br><br>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
</tbody>
|
||||
</table>
|
||||
<br>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</body>
|
||||
|
||||
<hr size="1">
|
||||
<body>
|
||||
<div id="footer" align="right">
|
||||
<small>
|
||||
AmbiqSuite Register Documentation
|
||||
<a href="http://www.ambiqmicro.com">
|
||||
<img class="footer" src="../resources/ambiqmicro_logo.png" alt="Ambiq Micro"/></a>   Copyright © 2014  <br />
|
||||
This documentation is licensed and distributed under the <a rel="license" href="http://opensource.org/licenses/BSD-3-Clause">BSD 3-Clause License</a>.  <br/>
|
||||
</small>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
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Reference in New Issue
Block a user