d_unused" colspan="1">-</td>
 <td class="td_field" colspan="1">trig_act</td>
</tr>
</table>
<ul>
<li><b>
trig_act
</b>[<i>rw</i>]: Action after receiving the external trigger
<br>0: Clear counter;<br>1: Copy counter value to cnt_snap.
</ul>
<a name="cnt_snap"></a>
<h3><a name="sect_3_2">2.2. cnt_snap</a></h3>
<table cellpadding=0 cellspacing=0 border=0>
<tr><td><b>HW prefix:</b></td><td class="td_code">cnt_snap</td></tr>
<tr><td><b>HW address:</b></td><td class="td_code">0x4</td></tr>
<tr><td><b>C prefix:</