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-<table class="head">
- <tr>
- <td class="head-ltitle">MCP3KADC(4)</td>
- <td class="head-vol">Device Drivers Manual</td>
- <td class="head-rtitle">MCP3KADC(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">mcp3kadc</code> &#x2014;
- <span class="Nd">Microchip 3x0x SAR analog to digital converter</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">mcp3kadc* at spi? slave ? flags N</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">mcp3kadc</code> driver reports the current
- voltage on the chip's ADC channels through the <a class="Xr">envsys(4)</a>
- API. The driver calculates these values according to the currently selected
- reference voltage (<code class="Li">Vref</code>). It can be changed through
- the <a class="Xr">sysctl(8)</a> node
- <code class="Li">hw.mcp3kadc0.vref</code>.</p>
-<p class="Pp">The following table shows the supported chips. The type of the
- chip can be selected with the <var class="Ar">flags</var> argument in the
- config file.</p>
-<table class="Bl-column Bd-indent">
- <tr id="Designation">
- <td><a class="permalink" href="#Designation"><b class="Sy">Designation</b></a></td>
- <td><a class="permalink" href="#Resolution"><b class="Sy" id="Resolution">Resolution</b></a></td>
- <td><a class="permalink" href="#Input"><b class="Sy" id="Input">Input
- Channels</b></a></td>
- <td><a class="permalink" href="#flags"><b class="Sy" id="flags">flags</b></a></td>
- </tr>
- <tr id="MCP3001">
- <td><a class="permalink" href="#MCP3001"><code class="Li">MCP3001</code></a></td>
- <td>10 bits</td>
- <td>1</td>
- <td>0</td>
- </tr>
- <tr id="MCP3002">
- <td><a class="permalink" href="#MCP3002"><code class="Li">MCP3002</code></a></td>
- <td>10 bits</td>
- <td>2</td>
- <td>1</td>
- </tr>
- <tr id="MCP3004">
- <td><a class="permalink" href="#MCP3004"><code class="Li">MCP3004</code></a></td>
- <td>10 bits</td>
- <td>4</td>
- <td>2</td>
- </tr>
- <tr id="MCP3008">
- <td><a class="permalink" href="#MCP3008"><code class="Li">MCP3008</code></a></td>
- <td>10 bits</td>
- <td>8</td>
- <td>3</td>
- </tr>
- <tr id="MCP3201">
- <td><a class="permalink" href="#MCP3201"><code class="Li">MCP3201</code></a></td>
- <td>12 bits</td>
- <td>1</td>
- <td>4</td>
- </tr>
- <tr id="MCP3202">
- <td><a class="permalink" href="#MCP3202"><code class="Li">MCP3202</code></a></td>
- <td>12 bits</td>
- <td>2</td>
- <td>5</td>
- </tr>
- <tr id="MCP3204">
- <td><a class="permalink" href="#MCP3204"><code class="Li">MCP3204</code></a></td>
- <td>12 bits</td>
- <td>4</td>
- <td>6</td>
- </tr>
- <tr id="MCP3208">
- <td><a class="permalink" href="#MCP3208"><code class="Li">MCP3208</code></a></td>
- <td>12 bits</td>
- <td>8</td>
- <td>7</td>
- </tr>
- <tr id="MCP3301">
- <td><a class="permalink" href="#MCP3301"><code class="Li">MCP3301</code></a></td>
- <td>13 bits</td>
- <td>1</td>
- <td>8</td>
- </tr>
- <tr id="MCP3302">
- <td><a class="permalink" href="#MCP3302"><code class="Li">MCP3302</code></a></td>
- <td>13 bits</td>
- <td>4</td>
- <td>9</td>
- </tr>
- <tr id="MCP3304">
- <td><a class="permalink" href="#MCP3304"><code class="Li">MCP3304</code></a></td>
- <td>13 bits</td>
- <td>8</td>
- <td>10</td>
- </tr>
-</table>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SYSCTL_VARIABLES"><a class="permalink" href="#SYSCTL_VARIABLES">SYSCTL
- VARIABLES</a></h1>
-<p class="Pp">The following <a class="Xr">sysctl(3)</a> variables are
- provided:</p>
-<dl class="Bl-tag">
- <dt>hw.mcp3kadc0.vref</dt>
- <dd>Defines the reference voltage on the chip's <code class="Li">Vref</code>
- pin in millivolts (mV). It defaults to the ADC's maximum output value + 1
- in millivolts (e.g., 4096 for a 12-bit ADC).</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">envsys(4)</a>, <a class="Xr">spi(4)</a>,
- <a class="Xr">sysctl(8)</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">mcp3kadc</code> driver first appeared in
- <span class="Ux">NetBSD 8.0</span>.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
-<p class="Pp">The <code class="Nm">mcp3kadc</code> driver was written by
- <span class="An">Frank Wille</span>.</p>
-</section>
-</div>
-<table class="foot">
- <tr>
- <td class="foot-date">August 18, 2015</td>
- <td class="foot-os">NetBSD 10.1</td>
- </tr>
-</table>