d startup registers (WARNING: This will change the output frequency of the Si57x oscillator to the startup values, autoclear).</dd>
  <dt><b>apply_cfg</b> [<i>rw</i>]</dt>
  <dd>Write the HSDIV, N1 and RFREQ registers<br><br>0: Do nothing;<br>1: Write registers (autoclear).</dd>
</dl>
<a name="sta"></a>
<h3>2.2. sta</h3>
<table cellpadding=0 cellspacing=0 border=0>
<tr><td><b>HW prefix:</b></td><td class="td_code">sta</td></tr>
<tr><td><b>HW address:</b></td><td class="td_code">0x4</td></tr>
<tr><td><b>C pr