static/netbsd/man4/cmpci.4 4.html


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<table class="head">
  <tr>
    <td class="head-ltitle">CMPCI(4)</td>
    <td class="head-vol">Device Drivers Manual</td>
    <td class="head-rtitle">CMPCI(4)</td>
  </tr>
</table>
<div class="manual-text">
<section class="Sh">
<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<p class="Pp"><code class="Nm">cmpci</code> &#x2014; <span class="Nd">C-Media
    CMI8x38 audio device driver</span></p>
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<p class="Pp"><code class="Cd">cmpci* at pci? dev ? function ?</code>
  <br/>
  <code class="Cd">audio* at audiobus?</code>
  <br/>
  <code class="Cd">mpu* at cmpci?</code>
  <br/>
  <code class="Cd">opl* at cmpci? flags 1</code></p>
</section>
<section class="Sh">
<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
<p class="Pp">The <code class="Nm">cmpci</code> device driver supports C-Media
    CMI8x38 based sound cards.</p>
<p class="Pp">The device has SPDIF input/output interfaces, 16bit CODEC with
    analog mixer, OPL3 FM Synthesizer, and MPU401 compatible MIDI I/O port
    interface.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="MIXER_DEVICE"><a class="permalink" href="#MIXER_DEVICE">MIXER
  DEVICE</a></h1>
<p class="Pp">The mixer device of <code class="Nm">cmpci</code> driver can be
    accessed via <a class="Xr">mixerctl(1)</a> command. The complex structure is
    analyzed as follows.</p>
<div class="Bd Pp Li">
<pre>SPDIF in  ----------------------
#1(coax)-&gt;|spdin1              |  R    -----------------------
#2(opt)--&gt;|spdin2  spdif.input |--*-&gt;--|spdin   spdif.output |--&gt; SPDIF
       --&gt;|spdout              |  | --&gt;|playback             |    output
       |  ----------------------  | |  -----------------------
       --------------------&lt;------+-*
     ---------&lt;-------------------+-+----------------------------------
     |  ------------------------  | |   -----------------------       |
     --&gt;|legacy  spdif.output. |--+-*--&gt;|spdout               |       |
     --&gt;|wave    playback      |  -----&gt;|spdin  spdif.monitor |----   |
     |  ------------------------     NC-|off                  |   |   |
     ---------&lt;-- spdif                 -----------------------   |   |
         -------+------- dac ------------    -----------------    v   |
wave  --&gt;|playback.mode|----&gt;|inputs.dac|-*-&gt;|inputs.dac.mute|-&gt;----- |
playback ---------------     ------------ R  -----------------  | + | |
                  -----------------     ---------------------   |mix| |
FM synthesizer --&gt;|inputs.fmsynth |--*-&gt;|inputs.fmsynth.mute|--&gt;----- |
                  -----------------  R  ---------------------     *-&gt;--
CD        ----------------------   ---------------------------    v
LINE-IN -&gt;|inputs.{cd,line,aux}|-*&gt;|inputs.{cd,line,aux}.mute|-&gt;-----
AUX       ---------------------- R ---------------------------  |   |
          ------------------                                    |   |
PC-SPK --&gt;| inputs.speaker |-----------------------------------&gt;| + |
          ------------------                                    |   |
          -------------------  ------------  -----------------  |mix|
MIC --*--&gt;|inputs.mic.preamp|-&gt;|inputs.mic|-&gt;|inputs.mic.mute|-&gt;|   |
      |   -------------------  ------------  -----------------  -----
      |   ------------   -----------------                       |
      ---&gt;|record.mic|--&gt;|               |                       v
          ------------   | record.source |--&gt;to         -----------
                    *R--&gt;| (select, mix) |   recording  |outputs.*|--&gt;
                         -----------------              ----------- SPK
                                                                 (front)</pre>
</div>
<p class="Pp">Note the 2nd SPDIF input exists only on CMI8738/PCI-6ch
  versions.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="MIXER_EXAMPLES"><a class="permalink" href="#MIXER_EXAMPLES">MIXER
  EXAMPLES</a></h1>
<p class="Pp">Here are examples about wave playback and SPDIF input/output
    ports.</p>
<dl class="Bl-tag">
  <dt>Playback to speaker, SPDIF input to SPDIF output</dt>
  <dd>
    <div class="Bd Bd-indent"><code class="Li">mixerctl -w playback.mode=dac
      spdif.output=spdin spdif.monitor=off</code></div>
  </dd>
  <dt>Playback to SPDIF output, SPDIF input to speaker</dt>
  <dd>
    <div class="Bd Bd-indent"><code class="Li">mixerctl -w playback.mode=spdif
      spdif.output=playback spdif.output.playback=wave
      spdif.monitor=spdin</code></div>
  </dd>
  <dt>SPDIF input to both SPDIF output and speaker</dt>
  <dd>
    <div class="Bd Bd-indent"><code class="Li">mixerctl -w spdif.output=spdin
      spdif.monitor=spdin</code></div>
  </dd>
  <dt>Playback to both SPDIF output and speaker</dt>
  <dd>
    <div class="Bd Bd-indent"><code class="Li">mixerctl -w playback.mode=spdif
      spdif.output=playback spdif.output.playback=wave
      spdif.monitor=spdout</code></div>
  </dd>
  <dt>Mix playback and SPDIF input to speaker</dt>
  <dd>
    <div class="Bd Bd-indent"><code class="Li">mixerctl -w playback.mode=dac
      spdif.monitor=spdin</code></div>
  </dd>
</dl>
</section>
<section class="Sh">
<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
  ALSO</a></h1>
<p class="Pp"><a class="Xr">mixerctl(1)</a>, <a class="Xr">audio(4)</a>,
    <a class="Xr">midi(4)</a>, <a class="Xr">mpu(4)</a>,
    <a class="Xr">opl(4)</a>, <a class="Xr">pci(4)</a></p>
</section>
<section class="Sh">
<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
<p class="Pp">The <code class="Nm">cmpci</code> device driver appeared in
    <span class="Ux">NetBSD 1.5</span>.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="BUGS"><a class="permalink" href="#BUGS">BUGS</a></h1>
<p class="Pp">4ch/6ch playback is not yet available. Joystick port is not
    supported.</p>
<p class="Pp"><code class="Dv">spdif.output.playback=legacy</code> does not seem
    to work properly.</p>
</section>
</div>
<table class="foot">
  <tr>
    <td class="foot-date">June 22, 2005</td>
    <td class="foot-os">NetBSD 10.1</td>
  </tr>
</table>