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<h1>drv_audio.v</h1> </div>
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<a href="drv__audio_8v.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="keyword">/* </span>
<a name="l00002"></a>00002 <span class="keyword"> Copyright 2010, Aleksander Osman, alfik@poczta.fm. All rights reserved.</span>
<a name="l00003"></a>00003 <span class="keyword"> </span>
<a name="l00004"></a>00004 <span class="keyword"> Redistribution and use in source and binary forms, with or without modification, are</span>
<a name="l00005"></a>00005 <span class="keyword"> permitted provided that the following conditions are met:</span>
<a name="l00006"></a>00006 <span class="keyword"> </span>
<a name="l00007"></a>00007 <span class="keyword"> 1. Redistributions of source code must retain the above copyright notice, this list of</span>
<a name="l00008"></a>00008 <span class="keyword"> conditions and the following disclaimer.</span>
<a name="l00009"></a>00009 <span class="keyword"> </span>
<a name="l00010"></a>00010 <span class="keyword"> 2. Redistributions in binary form must reproduce the above copyright notice, this list</span>
<a name="l00011"></a>00011 <span class="keyword"> of conditions and the following disclaimer in the documentation and/or other materials</span>
<a name="l00012"></a>00012 <span class="keyword"> provided with the distribution.</span>
<a name="l00013"></a>00013 <span class="keyword"> </span>
<a name="l00014"></a>00014 <span class="keyword"> THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED</span>
<a name="l00015"></a>00015 <span class="keyword"> WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND</span>
<a name="l00016"></a>00016 <span class="keyword"> FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR</span>
<a name="l00017"></a>00017 <span class="keyword"> CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR</span>
<a name="l00018"></a>00018 <span class="keyword"> CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR</span>
<a name="l00019"></a>00019 <span class="keyword"> SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON</span>
<a name="l00020"></a>00020 <span class="keyword"> ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING</span>
<a name="l00021"></a>00021 <span class="keyword"> NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF</span>
<a name="l00022"></a>00022 <span class="keyword"> ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00023"></a>00023 <span class="keyword"> */</span>
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="keyword">/*! \file</span>
<a name="l00026"></a>00026 <span class="keyword"> \brief WM8731 audio codec driver for stereo audio output.</span>
<a name="l00027"></a>00027 <span class="keyword"> */</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="keyword">/*! \brief \copybrief drv_audio.v</span>
<a name="l00030"></a>00030 <span class="keyword">*/</span>
<a name="l00031"></a><a class="code" href="classdrv__audio.html">00031</a> <span class="vhdlkeyword">module</span> <a class="code" href="classdrv__audio.html">drv_audio</a>(
<a name="l00032"></a>00032 <span class="keyword">//% \name Clock and reset
</span>
<a name="l00033"></a>00033 <span class="keyword">//% @{</span>
<a name="l00034"></a><a class="code" href="classdrv__audio.html#a82aa89e831131841dcc2f484cf5a43be">00034</a> <span class="vhdlkeyword">input</span> <a class="code" href="classdrv__audio.html#a82aa89e831131841dcc2f484cf5a43be">clk_12</a>,
<a name="l00035"></a><a class="code" href="classdrv__audio.html#a31e1c30ba7812ad59ba6a206d099ffee">00035</a> <span class="vhdlkeyword">input</span> <a class="code" href="classdrv__audio.html#a31e1c30ba7812ad59ba6a206d099ffee">reset_n</a>,
<a name="l00036"></a>00036 <span class="keyword">//% @}</span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="keyword">//% \name drv_audio interface
</span>
<a name="l00039"></a>00039 <span class="keyword">//% @{</span>
<a name="l00040"></a><a class="code" href="classdrv__audio.html#afa79730283d4fca6cd148df779d7621e">00040</a> <span class="vhdlkeyword">input</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#afa79730283d4fca6cd148df779d7621e">volume0</a>,
<a name="l00041"></a><a class="code" href="classdrv__audio.html#a24af75287d384a1d47a316655d316fbb">00041</a> <span class="vhdlkeyword">input</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a24af75287d384a1d47a316655d316fbb">volume1</a>,
<a name="l00042"></a><a class="code" href="classdrv__audio.html#a892d8bbbbeb51a5cfc2c4781fb108997">00042</a> <span class="vhdlkeyword">input</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a892d8bbbbeb51a5cfc2c4781fb108997">volume2</a>,
<a name="l00043"></a><a class="code" href="classdrv__audio.html#a9434def5319dc92121f56657e84773c1">00043</a> <span class="vhdlkeyword">input</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a9434def5319dc92121f56657e84773c1">volume3</a>,
<a name="l00044"></a><a class="code" href="classdrv__audio.html#ac6eb6c59f1acba2dadd0c2337b1cd686">00044</a> <span class="vhdlkeyword">input</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#ac6eb6c59f1acba2dadd0c2337b1cd686">sample0</a>,
<a name="l00045"></a><a class="code" href="classdrv__audio.html#af47c670c55b69ef6dc08afb74ec6fee3">00045</a> <span class="vhdlkeyword">input</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#af47c670c55b69ef6dc08afb74ec6fee3">sample1</a>,
<a name="l00046"></a><a class="code" href="classdrv__audio.html#a2be6f6fc5507525b1f4a1fbcfd34928b">00046</a> <span class="vhdlkeyword">input</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a2be6f6fc5507525b1f4a1fbcfd34928b">sample2</a>,
<a name="l00047"></a><a class="code" href="classdrv__audio.html#a179f7ad7d07f063f01ac9d32621f33c1">00047</a> <span class="vhdlkeyword">input</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a179f7ad7d07f063f01ac9d32621f33c1">sample3</a>,
<a name="l00048"></a>00048 <span class="keyword">//% @}</span>
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="keyword">//% \name WM8731 audio codec hardware interface
</span>
<a name="l00051"></a>00051 <span class="keyword">//% @{</span>
<a name="l00052"></a><a class="code" href="classdrv__audio.html#a638f5df1565b37c1dfee462766e994fb">00052</a> <span class="vhdlkeyword">output</span> <a class="code" href="classdrv__audio.html#a638f5df1565b37c1dfee462766e994fb">ac_sclk</a>,
<a name="l00053"></a><a class="code" href="classdrv__audio.html#a614103e1dff866ce70f61b7a0f946e00">00053</a> <span class="vhdlkeyword">inout</span> <a class="code" href="classdrv__audio.html#a614103e1dff866ce70f61b7a0f946e00">ac_sdat</a>,
<a name="l00054"></a><a class="code" href="classdrv__audio.html#ac6570c2d06394c43b868794aaac13875">00054</a> <span class="vhdlkeyword">output</span> <a class="code" href="classdrv__audio.html#ac6570c2d06394c43b868794aaac13875">ac_xclk</a>,
<a name="l00055"></a><a class="code" href="classdrv__audio.html#a25d2e9a7059013f2ae7a281d729a7979">00055</a> <span class="vhdlkeyword">output</span> <span class="vhdlkeyword">reg</span> <a class="code" href="classdrv__audio.html#a25d2e9a7059013f2ae7a281d729a7979">ac_bclk</a>,
<a name="l00056"></a><a class="code" href="classdrv__audio.html#a87f2886b45a47ae898eca8f6d9112936">00056</a> <span class="vhdlkeyword">output</span> <a class="code" href="classdrv__audio.html#a87f2886b45a47ae898eca8f6d9112936">ac_dat</a>,
<a name="l00057"></a><a class="code" href="classdrv__audio.html#a0fb0297ccc93f879e1944a914a271bf8">00057</a> <span class="vhdlkeyword">output</span> <span class="vhdlkeyword">reg</span> <a class="code" href="classdrv__audio.html#a0fb0297ccc93f879e1944a914a271bf8">ac_lr</a>
<a name="l00058"></a>00058 <span class="keyword">//% @}</span>
<a name="l00059"></a>00059 );
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="keyword">//clock domain switch</span>
<a name="l00062"></a><a class="code" href="classdrv__audio.html#a026a32133d860bd3f696d4cad1cd89cd">00062</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a026a32133d860bd3f696d4cad1cd89cd">volume0a</a>;
<a name="l00063"></a><a class="code" href="classdrv__audio.html#a3786339f2184e505b8be1ec1e6f83544">00063</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a3786339f2184e505b8be1ec1e6f83544">volume1a</a>;
<a name="l00064"></a><a class="code" href="classdrv__audio.html#a5f6b5ceb3e5cf7368b15638c024be903">00064</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a5f6b5ceb3e5cf7368b15638c024be903">volume2a</a>;
<a name="l00065"></a><a class="code" href="classdrv__audio.html#addedbba5417c7143b1d4a433d0a4f2bd">00065</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#addedbba5417c7143b1d4a433d0a4f2bd">volume3a</a>;
<a name="l00066"></a><a class="code" href="classdrv__audio.html#ad85d1e1fd9de00e98fe87f1b831518cd">00066</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#ad85d1e1fd9de00e98fe87f1b831518cd">sample0a</a>;
<a name="l00067"></a><a class="code" href="classdrv__audio.html#a48a565e7937a507149e7f2c730d9df78">00067</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a48a565e7937a507149e7f2c730d9df78">sample1a</a>;
<a name="l00068"></a><a class="code" href="classdrv__audio.html#ae6a69b685897783c31a59f5d1788a0b2">00068</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#ae6a69b685897783c31a59f5d1788a0b2">sample2a</a>;
<a name="l00069"></a><a class="code" href="classdrv__audio.html#a307a7daa41080ea87e11de754d076787">00069</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a307a7daa41080ea87e11de754d076787">sample3a</a>;
<a name="l00070"></a>00070
<a name="l00071"></a><a class="code" href="classdrv__audio.html#acee7f8956a255f1d0790305fcd04e64a">00071</a> <span class="vhdlkeyword">always</span> @(<span class="vhdlkeyword">posedge</span> <a class="code" href="classdrv__audio.html#a82aa89e831131841dcc2f484cf5a43be">clk_12</a>) <span class="vhdlkeyword">begin</span>
<a name="l00072"></a>00072 <a class="code" href="classdrv__audio.html#a026a32133d860bd3f696d4cad1cd89cd">volume0a</a> <= <a class="code" href="classdrv__audio.html#afa79730283d4fca6cd148df779d7621e">volume0</a>;
<a name="l00073"></a>00073 <a class="code" href="classdrv__audio.html#a3786339f2184e505b8be1ec1e6f83544">volume1a</a> <= <a class="code" href="classdrv__audio.html#a24af75287d384a1d47a316655d316fbb">volume1</a>;
<a name="l00074"></a>00074 <a class="code" href="classdrv__audio.html#a5f6b5ceb3e5cf7368b15638c024be903">volume2a</a> <= <a class="code" href="classdrv__audio.html#a892d8bbbbeb51a5cfc2c4781fb108997">volume2</a>;
<a name="l00075"></a>00075 <a class="code" href="classdrv__audio.html#addedbba5417c7143b1d4a433d0a4f2bd">volume3a</a> <= <a class="code" href="classdrv__audio.html#a9434def5319dc92121f56657e84773c1">volume3</a>;
<a name="l00076"></a>00076 <a class="code" href="classdrv__audio.html#ad85d1e1fd9de00e98fe87f1b831518cd">sample0a</a> <= <a class="code" href="classdrv__audio.html#ac6eb6c59f1acba2dadd0c2337b1cd686">sample0</a>;
<a name="l00077"></a>00077 <a class="code" href="classdrv__audio.html#a48a565e7937a507149e7f2c730d9df78">sample1a</a> <= <a class="code" href="classdrv__audio.html#af47c670c55b69ef6dc08afb74ec6fee3">sample1</a>;
<a name="l00078"></a>00078 <a class="code" href="classdrv__audio.html#ae6a69b685897783c31a59f5d1788a0b2">sample2a</a> <= <a class="code" href="classdrv__audio.html#a2be6f6fc5507525b1f4a1fbcfd34928b">sample2</a>;
<a name="l00079"></a>00079 <a class="code" href="classdrv__audio.html#a307a7daa41080ea87e11de754d076787">sample3a</a> <= <a class="code" href="classdrv__audio.html#a179f7ad7d07f063f01ac9d32621f33c1">sample3</a>;
<a name="l00080"></a>00080 <span class="vhdlkeyword">end</span>
<a name="l00081"></a>00081
<a name="l00082"></a><a class="code" href="classdrv__audio.html#a2487715a6826ca8c2568a81ec213759f">00082</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a2487715a6826ca8c2568a81ec213759f">volume0f</a>;
<a name="l00083"></a><a class="code" href="classdrv__audio.html#a49774a000f12e93eb7c55d611d26e592">00083</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a49774a000f12e93eb7c55d611d26e592">volume1f</a>;
<a name="l00084"></a><a class="code" href="classdrv__audio.html#ae5b2726a793dbe5b7b9ae0089ceed778">00084</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#ae5b2726a793dbe5b7b9ae0089ceed778">volume2f</a>;
<a name="l00085"></a><a class="code" href="classdrv__audio.html#a9932509678fa32b43be31462b0a835ff">00085</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">5</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a9932509678fa32b43be31462b0a835ff">volume3f</a>;
<a name="l00086"></a><a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">00086</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>;
<a name="l00087"></a><a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">00087</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>;
<a name="l00088"></a><a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">00088</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>;
<a name="l00089"></a><a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">00089</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>;
<a name="l00090"></a>00090
<a name="l00091"></a><a class="code" href="classdrv__audio.html#af7ff2091a6e330e719475e5a7911a9a2">00091</a> <span class="vhdlkeyword">always</span> @(<span class="vhdlkeyword">posedge</span> <a class="code" href="classdrv__audio.html#a82aa89e831131841dcc2f484cf5a43be">clk_12</a>) <span class="vhdlkeyword">begin</span>
<a name="l00092"></a>00092 <a class="code" href="classdrv__audio.html#a2487715a6826ca8c2568a81ec213759f">volume0f</a> <= <a class="code" href="classdrv__audio.html#a026a32133d860bd3f696d4cad1cd89cd">volume0a</a>;
<a name="l00093"></a>00093 <a class="code" href="classdrv__audio.html#a49774a000f12e93eb7c55d611d26e592">volume1f</a> <= <a class="code" href="classdrv__audio.html#a3786339f2184e505b8be1ec1e6f83544">volume1a</a>;
<a name="l00094"></a>00094 <a class="code" href="classdrv__audio.html#ae5b2726a793dbe5b7b9ae0089ceed778">volume2f</a> <= <a class="code" href="classdrv__audio.html#a5f6b5ceb3e5cf7368b15638c024be903">volume2a</a>;
<a name="l00095"></a>00095 <a class="code" href="classdrv__audio.html#a9932509678fa32b43be31462b0a835ff">volume3f</a> <= <a class="code" href="classdrv__audio.html#addedbba5417c7143b1d4a433d0a4f2bd">volume3a</a>;
<a name="l00096"></a>00096 <a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a> <= <a class="code" href="classdrv__audio.html#ad85d1e1fd9de00e98fe87f1b831518cd">sample0a</a>;
<a name="l00097"></a>00097 <a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a> <= <a class="code" href="classdrv__audio.html#a48a565e7937a507149e7f2c730d9df78">sample1a</a>;
<a name="l00098"></a>00098 <a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a> <= <a class="code" href="classdrv__audio.html#ae6a69b685897783c31a59f5d1788a0b2">sample2a</a>;
<a name="l00099"></a>00099 <a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a> <= <a class="code" href="classdrv__audio.html#a307a7daa41080ea87e11de754d076787">sample3a</a>;
<a name="l00100"></a>00100 <span class="vhdlkeyword">end</span>
<a name="l00101"></a>00101
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a87f2886b45a47ae898eca8f6d9112936">ac_dat</a> = <a class="code" href="classdrv__audio.html#a5dbf59270f992412d7d3ff03a24ce657">left_right_sample</a>[<span class="vhdllogic">31</span>];
<a name="l00104"></a>00104 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#ac6570c2d06394c43b868794aaac13875">ac_xclk</a> = <a class="code" href="classdrv__audio.html#a82aa89e831131841dcc2f484cf5a43be">clk_12</a>;
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="keyword">// left MSB-LSB, right MSB-LSB</span>
<a name="l00107"></a><a class="code" href="classdrv__audio.html#a5dbf59270f992412d7d3ff03a24ce657">00107</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a5dbf59270f992412d7d3ff03a24ce657">left_right_sample</a>;
<a name="l00108"></a><a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">00108</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a>;
<a name="l00109"></a>00109
<a name="l00110"></a><a class="code" href="classdrv__audio.html#a32d7b3633b34fb5754e19a9ecbbc7461">00110</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">13</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a32d7b3633b34fb5754e19a9ecbbc7461">mult_left_1</a>;
<a name="l00111"></a>00111 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a32d7b3633b34fb5754e19a9ecbbc7461">mult_left_1</a> =
<a name="l00112"></a>00112 ((<a class="code" href="classdrv__audio.html#a49774a000f12e93eb7c55d611d26e592">volume1f</a>[<span class="vhdllogic">0</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">6</span>{<a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] } : <span class="vhdllogic">14'd0</span>) +
<a name="l00113"></a>00113 ((<a class="code" href="classdrv__audio.html#a49774a000f12e93eb7c55d611d26e592">volume1f</a>[<span class="vhdllogic">1</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">5</span>{<a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">1'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00114"></a>00114 ((<a class="code" href="classdrv__audio.html#a49774a000f12e93eb7c55d611d26e592">volume1f</a>[<span class="vhdllogic">2</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">4</span>{<a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">2'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00115"></a>00115 ((<a class="code" href="classdrv__audio.html#a49774a000f12e93eb7c55d611d26e592">volume1f</a>[<span class="vhdllogic">3</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">3</span>{<a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">3'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00116"></a>00116 ((<a class="code" href="classdrv__audio.html#a49774a000f12e93eb7c55d611d26e592">volume1f</a>[<span class="vhdllogic">4</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">2</span>{<a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">4'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00117"></a>00117 ((<a class="code" href="classdrv__audio.html#a49774a000f12e93eb7c55d611d26e592">volume1f</a>[<span class="vhdllogic">5</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">1</span>{<a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae0dfd2591a910724dab88bde7c6048a3">sample1f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">5'b0</span> } : <span class="vhdllogic">14'd0</span>);
<a name="l00118"></a>00118
<a name="l00119"></a><a class="code" href="classdrv__audio.html#a4cb67941760c251c8610e67dcf1a846f">00119</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">13</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a4cb67941760c251c8610e67dcf1a846f">mult_left_2</a>;
<a name="l00120"></a>00120 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a4cb67941760c251c8610e67dcf1a846f">mult_left_2</a> =
<a name="l00121"></a>00121 ((<a class="code" href="classdrv__audio.html#ae5b2726a793dbe5b7b9ae0089ceed778">volume2f</a>[<span class="vhdllogic">0</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">6</span>{<a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] } : <span class="vhdllogic">14'd0</span>) +
<a name="l00122"></a>00122 ((<a class="code" href="classdrv__audio.html#ae5b2726a793dbe5b7b9ae0089ceed778">volume2f</a>[<span class="vhdllogic">1</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">5</span>{<a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">1'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00123"></a>00123 ((<a class="code" href="classdrv__audio.html#ae5b2726a793dbe5b7b9ae0089ceed778">volume2f</a>[<span class="vhdllogic">2</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">4</span>{<a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">2'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00124"></a>00124 ((<a class="code" href="classdrv__audio.html#ae5b2726a793dbe5b7b9ae0089ceed778">volume2f</a>[<span class="vhdllogic">3</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">3</span>{<a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">3'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00125"></a>00125 ((<a class="code" href="classdrv__audio.html#ae5b2726a793dbe5b7b9ae0089ceed778">volume2f</a>[<span class="vhdllogic">4</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">2</span>{<a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">4'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00126"></a>00126 ((<a class="code" href="classdrv__audio.html#ae5b2726a793dbe5b7b9ae0089ceed778">volume2f</a>[<span class="vhdllogic">5</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">1</span>{<a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#a25fe047a24f0c9d11ea75f55e9e8f847">sample2f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">5'b0</span> } : <span class="vhdllogic">14'd0</span>);
<a name="l00127"></a>00127
<a name="l00128"></a><a class="code" href="classdrv__audio.html#a8fe985743dd65a76990dbc42db03e6b0">00128</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">13</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a8fe985743dd65a76990dbc42db03e6b0">mult_right_0</a>;
<a name="l00129"></a>00129 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a8fe985743dd65a76990dbc42db03e6b0">mult_right_0</a> =
<a name="l00130"></a>00130 ((<a class="code" href="classdrv__audio.html#a2487715a6826ca8c2568a81ec213759f">volume0f</a>[<span class="vhdllogic">0</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">6</span>{<a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] } : <span class="vhdllogic">14'd0</span>) +
<a name="l00131"></a>00131 ((<a class="code" href="classdrv__audio.html#a2487715a6826ca8c2568a81ec213759f">volume0f</a>[<span class="vhdllogic">1</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">5</span>{<a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">1'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00132"></a>00132 ((<a class="code" href="classdrv__audio.html#a2487715a6826ca8c2568a81ec213759f">volume0f</a>[<span class="vhdllogic">2</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">4</span>{<a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">2'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00133"></a>00133 ((<a class="code" href="classdrv__audio.html#a2487715a6826ca8c2568a81ec213759f">volume0f</a>[<span class="vhdllogic">3</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">3</span>{<a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">3'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00134"></a>00134 ((<a class="code" href="classdrv__audio.html#a2487715a6826ca8c2568a81ec213759f">volume0f</a>[<span class="vhdllogic">4</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">2</span>{<a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">4'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00135"></a>00135 ((<a class="code" href="classdrv__audio.html#a2487715a6826ca8c2568a81ec213759f">volume0f</a>[<span class="vhdllogic">5</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">1</span>{<a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#ae7f0c61086535f43cd5f4f82c55b83c1">sample0f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">5'b0</span> } : <span class="vhdllogic">14'd0</span>);
<a name="l00136"></a>00136
<a name="l00137"></a><a class="code" href="classdrv__audio.html#a2ca90a0535d47717ac384894d7a65f44">00137</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">13</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a2ca90a0535d47717ac384894d7a65f44">mult_right_3</a>;
<a name="l00138"></a>00138 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a2ca90a0535d47717ac384894d7a65f44">mult_right_3</a> =
<a name="l00139"></a>00139 ((<a class="code" href="classdrv__audio.html#a9932509678fa32b43be31462b0a835ff">volume3f</a>[<span class="vhdllogic">0</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">6</span>{<a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] } : <span class="vhdllogic">14'd0</span>) +
<a name="l00140"></a>00140 ((<a class="code" href="classdrv__audio.html#a9932509678fa32b43be31462b0a835ff">volume3f</a>[<span class="vhdllogic">1</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">5</span>{<a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">1'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00141"></a>00141 ((<a class="code" href="classdrv__audio.html#a9932509678fa32b43be31462b0a835ff">volume3f</a>[<span class="vhdllogic">2</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">4</span>{<a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">2'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00142"></a>00142 ((<a class="code" href="classdrv__audio.html#a9932509678fa32b43be31462b0a835ff">volume3f</a>[<span class="vhdllogic">3</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">3</span>{<a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">3'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00143"></a>00143 ((<a class="code" href="classdrv__audio.html#a9932509678fa32b43be31462b0a835ff">volume3f</a>[<span class="vhdllogic">4</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">2</span>{<a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">4'b0</span> } : <span class="vhdllogic">14'd0</span>) +
<a name="l00144"></a>00144 ((<a class="code" href="classdrv__audio.html#a9932509678fa32b43be31462b0a835ff">volume3f</a>[<span class="vhdllogic">5</span>] == <span class="vhdllogic">1'b1</span>)? { {<span class="vhdllogic">1</span>{<a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>]}}, <a class="code" href="classdrv__audio.html#af7250045b493ffa3f941692f6d9139f5">sample3f</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">5'b0</span> } : <span class="vhdllogic">14'd0</span>);
<a name="l00145"></a>00145
<a name="l00146"></a><a class="code" href="classdrv__audio.html#ac15e83eb46d27f08ec7acf4273f853c2">00146</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">14</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#ac15e83eb46d27f08ec7acf4273f853c2">left_channel</a>;
<a name="l00147"></a>00147 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#ac15e83eb46d27f08ec7acf4273f853c2">left_channel</a> = { <a class="code" href="classdrv__audio.html#a32d7b3633b34fb5754e19a9ecbbc7461">mult_left_1</a>[<span class="vhdllogic">13</span>], <a class="code" href="classdrv__audio.html#a32d7b3633b34fb5754e19a9ecbbc7461">mult_left_1</a> } + { <a class="code" href="classdrv__audio.html#a4cb67941760c251c8610e67dcf1a846f">mult_left_2</a>[<span class="vhdllogic">13</span>], <a class="code" href="classdrv__audio.html#a4cb67941760c251c8610e67dcf1a846f">mult_left_2</a> };
<a name="l00148"></a>00148
<a name="l00149"></a><a class="code" href="classdrv__audio.html#a323850fac854510276acfd88c1df2013">00149</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">14</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a323850fac854510276acfd88c1df2013">right_channel</a>;
<a name="l00150"></a>00150 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a323850fac854510276acfd88c1df2013">right_channel</a> = { <a class="code" href="classdrv__audio.html#a8fe985743dd65a76990dbc42db03e6b0">mult_right_0</a>[<span class="vhdllogic">13</span>], <a class="code" href="classdrv__audio.html#a8fe985743dd65a76990dbc42db03e6b0">mult_right_0</a> } + { <a class="code" href="classdrv__audio.html#a2ca90a0535d47717ac384894d7a65f44">mult_right_3</a>[<span class="vhdllogic">13</span>], <a class="code" href="classdrv__audio.html#a2ca90a0535d47717ac384894d7a65f44">mult_right_3</a> };
<a name="l00151"></a>00151
<a name="l00152"></a>00152 <span class="keyword">/* Butterworth second order low-pass filter, cut-off = 3.3 kHz, sampling rate = 48 kHz</span>
<a name="l00153"></a>00153 <span class="keyword"> y_n =</span>
<a name="l00154"></a>00154 <span class="keyword"> 1.4014 y_n1</span>
<a name="l00155"></a>00155 <span class="keyword"> -0.5432 y_n2</span>
<a name="l00156"></a>00156 <span class="keyword"> 0.0354 x_n</span>
<a name="l00157"></a>00157 <span class="keyword"> 0.0709 x_n1</span>
<a name="l00158"></a>00158 <span class="keyword"> 0.0354 x_n2</span>
<a name="l00159"></a>00159 <span class="keyword"> Coefficients * 2^14:</span>
<a name="l00160"></a>00160 <span class="keyword"> 1.4014 -> 22961 = 1.01100110110001</span>
<a name="l00161"></a>00161 <span class="keyword"> -0.5432 -> -8900 = -0.10001011000100</span>
<a name="l00162"></a>00162 <span class="keyword"> 0.0354 -> 580 = 0.10010001000000</span>
<a name="l00163"></a>00163 <span class="keyword"> 0.0709 -> 1162 = 0.10010001010000</span>
<a name="l00164"></a>00164 <span class="keyword"> 0.0354 -> 580 = 0.10010001000000</span>
<a name="l00165"></a>00165 <span class="keyword">*/</span>
<a name="l00166"></a>00166
<a name="l00167"></a><a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">00167</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">lx_n</a>;
<a name="l00168"></a>00168 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">lx_n</a> = { {<span class="vhdllogic">3</span>{<a class="code" href="classdrv__audio.html#ac15e83eb46d27f08ec7acf4273f853c2">left_channel</a>[<span class="vhdllogic">14</span>]}}, <a class="code" href="classdrv__audio.html#ac15e83eb46d27f08ec7acf4273f853c2">left_channel</a>, <span class="vhdllogic">14'd0</span> };
<a name="l00169"></a>00169
<a name="l00170"></a><a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">00170</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">rx_n</a>;
<a name="l00171"></a>00171 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">rx_n</a> = { {<span class="vhdllogic">3</span>{<a class="code" href="classdrv__audio.html#a323850fac854510276acfd88c1df2013">right_channel</a>[<span class="vhdllogic">14</span>]}}, <a class="code" href="classdrv__audio.html#a323850fac854510276acfd88c1df2013">right_channel</a>, <span class="vhdllogic">14'd0</span> };
<a name="l00172"></a>00172
<a name="l00173"></a><a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">00173</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>;
<a name="l00174"></a><a class="code" href="classdrv__audio.html#a6c39c0233ca1aa3bb56c28594a1806db">00174</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a6c39c0233ca1aa3bb56c28594a1806db">ly_n2</a>;
<a name="l00175"></a><a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">00175</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a>;
<a name="l00176"></a><a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">00176</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">lx_n2</a>;
<a name="l00177"></a>00177
<a name="l00178"></a><a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">00178</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>;
<a name="l00179"></a><a class="code" href="classdrv__audio.html#a419fd6ff4e0c8202fda49d41465b6051">00179</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a419fd6ff4e0c8202fda49d41465b6051">ry_n2</a>;
<a name="l00180"></a><a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">00180</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a>;
<a name="l00181"></a><a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">00181</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">rx_n2</a>;
<a name="l00182"></a>00182
<a name="l00183"></a><a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">00183</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>;
<a name="l00184"></a>00184 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a> = -<a class="code" href="classdrv__audio.html#a6c39c0233ca1aa3bb56c28594a1806db">ly_n2</a>;
<a name="l00185"></a>00185
<a name="l00186"></a><a class="code" href="classdrv__audio.html#a0a83ccd141355b678587a04a5eb58c26">00186</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a0a83ccd141355b678587a04a5eb58c26">ly_n</a>;
<a name="l00187"></a>00187 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a0a83ccd141355b678587a04a5eb58c26">ly_n</a> =
<a name="l00188"></a>00188 <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a> +
<a name="l00189"></a>00189 { {<span class="vhdllogic">2</span>{<a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">2</span>] } +
<a name="l00190"></a>00190 { {<span class="vhdllogic">3</span>{<a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">3</span>] } +
<a name="l00191"></a>00191 { {<span class="vhdllogic">6</span>{<a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">6</span>] } +
<a name="l00192"></a>00192 { {<span class="vhdllogic">7</span>{<a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">7</span>] } +
<a name="l00193"></a>00193 { {<span class="vhdllogic">9</span>{<a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">9</span>] } +
<a name="l00194"></a>00194 { {<span class="vhdllogic">10</span>{<a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">10</span>] } +
<a name="l00195"></a>00195 { {<span class="vhdllogic">14</span>{<a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">14</span>] } +
<a name="l00196"></a>00196
<a name="l00197"></a>00197 { {<span class="vhdllogic">1</span>{<a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">1</span>] } +
<a name="l00198"></a>00198 { {<span class="vhdllogic">5</span>{<a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">5</span>] } +
<a name="l00199"></a>00199 { {<span class="vhdllogic">7</span>{<a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">7</span>] } +
<a name="l00200"></a>00200 { {<span class="vhdllogic">8</span>{<a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">8</span>] } +
<a name="l00201"></a>00201 { {<span class="vhdllogic">13</span>{<a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">13</span>] } +
<a name="l00202"></a>00202 { {<span class="vhdllogic">14</span>{<a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a36730052f5296bf0ab65f9c4c7203fad">minus_ly_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">14</span>] } +
<a name="l00203"></a>00203
<a name="l00204"></a>00204 { {<span class="vhdllogic">5</span>{<a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">lx_n</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">lx_n</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">5</span>] } +
<a name="l00205"></a>00205 { {<span class="vhdllogic">8</span>{<a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">lx_n</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">lx_n</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">8</span>] } +
<a name="l00206"></a>00206 { {<span class="vhdllogic">12</span>{<a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">lx_n</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">lx_n</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">12</span>] } +
<a name="l00207"></a>00207 { {<span class="vhdllogic">14</span>{<a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">lx_n</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">lx_n</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">14</span>] } +
<a name="l00208"></a>00208
<a name="l00209"></a>00209 { {<span class="vhdllogic">4</span>{<a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">4</span>] } +
<a name="l00210"></a>00210 { {<span class="vhdllogic">7</span>{<a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">7</span>] } +
<a name="l00211"></a>00211 { {<span class="vhdllogic">11</span>{<a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">11</span>] } +
<a name="l00212"></a>00212 { {<span class="vhdllogic">14</span>{<a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">14</span>] } +
<a name="l00213"></a>00213
<a name="l00214"></a>00214 { {<span class="vhdllogic">5</span>{<a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">lx_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">lx_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">5</span>] } +
<a name="l00215"></a>00215 { {<span class="vhdllogic">8</span>{<a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">lx_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">lx_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">8</span>] } +
<a name="l00216"></a>00216 { {<span class="vhdllogic">12</span>{<a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">lx_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">lx_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">12</span>] } +
<a name="l00217"></a>00217 { {<span class="vhdllogic">14</span>{<a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">lx_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">lx_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">14</span>] };
<a name="l00218"></a>00218
<a name="l00219"></a><a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">00219</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>;
<a name="l00220"></a>00220 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a> = -<a class="code" href="classdrv__audio.html#a419fd6ff4e0c8202fda49d41465b6051">ry_n2</a>;
<a name="l00221"></a>00221
<a name="l00222"></a><a class="code" href="classdrv__audio.html#a655a482bd8741d711dd309a2a821dff4">00222</a> <span class="vhdlkeyword">wire</span> [<span class="vhdllogic">31</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a655a482bd8741d711dd309a2a821dff4">ry_n</a>;
<a name="l00223"></a>00223 <span class="vhdlkeyword">assign</span> <a class="code" href="classdrv__audio.html#a655a482bd8741d711dd309a2a821dff4">ry_n</a> =
<a name="l00224"></a>00224 <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a> +
<a name="l00225"></a>00225 { {<span class="vhdllogic">2</span>{<a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">2</span>] } +
<a name="l00226"></a>00226 { {<span class="vhdllogic">3</span>{<a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">3</span>] } +
<a name="l00227"></a>00227 { {<span class="vhdllogic">6</span>{<a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">6</span>] } +
<a name="l00228"></a>00228 { {<span class="vhdllogic">7</span>{<a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">7</span>] } +
<a name="l00229"></a>00229 { {<span class="vhdllogic">9</span>{<a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">9</span>] } +
<a name="l00230"></a>00230 { {<span class="vhdllogic">10</span>{<a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">10</span>] } +
<a name="l00231"></a>00231 { {<span class="vhdllogic">14</span>{<a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">14</span>] } +
<a name="l00232"></a>00232
<a name="l00233"></a>00233 { {<span class="vhdllogic">1</span>{<a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">1</span>] } +
<a name="l00234"></a>00234 { {<span class="vhdllogic">5</span>{<a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">5</span>] } +
<a name="l00235"></a>00235 { {<span class="vhdllogic">7</span>{<a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">7</span>] } +
<a name="l00236"></a>00236 { {<span class="vhdllogic">8</span>{<a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">8</span>] } +
<a name="l00237"></a>00237 { {<span class="vhdllogic">13</span>{<a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">13</span>] } +
<a name="l00238"></a>00238 { {<span class="vhdllogic">14</span>{<a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a9aa4b8b7a3794c387524d157e8515729">minus_ry_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">14</span>] } +
<a name="l00239"></a>00239
<a name="l00240"></a>00240 { {<span class="vhdllogic">5</span>{<a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">rx_n</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">rx_n</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">5</span>] } +
<a name="l00241"></a>00241 { {<span class="vhdllogic">8</span>{<a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">rx_n</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">rx_n</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">8</span>] } +
<a name="l00242"></a>00242 { {<span class="vhdllogic">12</span>{<a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">rx_n</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">rx_n</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">12</span>] } +
<a name="l00243"></a>00243 { {<span class="vhdllogic">14</span>{<a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">rx_n</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">rx_n</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">14</span>] } +
<a name="l00244"></a>00244
<a name="l00245"></a>00245 { {<span class="vhdllogic">4</span>{<a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">4</span>] } +
<a name="l00246"></a>00246 { {<span class="vhdllogic">7</span>{<a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">7</span>] } +
<a name="l00247"></a>00247 { {<span class="vhdllogic">11</span>{<a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">11</span>] } +
<a name="l00248"></a>00248 { {<span class="vhdllogic">14</span>{<a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">14</span>] } +
<a name="l00249"></a>00249
<a name="l00250"></a>00250 { {<span class="vhdllogic">5</span>{<a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">rx_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">rx_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">5</span>] } +
<a name="l00251"></a>00251 { {<span class="vhdllogic">8</span>{<a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">rx_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">rx_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">8</span>] } +
<a name="l00252"></a>00252 { {<span class="vhdllogic">12</span>{<a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">rx_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">rx_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">12</span>] } +
<a name="l00253"></a>00253 { {<span class="vhdllogic">14</span>{<a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">rx_n2</a>[<span class="vhdllogic">31</span>]}}, <a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">rx_n2</a>[<span class="vhdllogic">31</span>:<span class="vhdllogic">14</span>] };
<a name="l00254"></a>00254
<a name="l00255"></a><a class="code" href="classdrv__audio.html#a536b4c0078f2b7f2a76893b4b51bead0">00255</a> <span class="vhdlkeyword">always</span> @(<span class="vhdlkeyword">posedge</span> <a class="code" href="classdrv__audio.html#a82aa89e831131841dcc2f484cf5a43be">clk_12</a> <span class="vhdlkeyword">or</span> <span class="vhdlkeyword">negedge</span> <a class="code" href="classdrv__audio.html#a31e1c30ba7812ad59ba6a206d099ffee">reset_n</a>) <span class="vhdlkeyword">begin</span>
<a name="l00256"></a>00256 <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#a31e1c30ba7812ad59ba6a206d099ffee">reset_n</a> == <span class="vhdllogic">1'b0</span>) <span class="vhdlkeyword">begin</span>
<a name="l00257"></a>00257 <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> <= <span class="vhdllogic">8'd0</span>;
<a name="l00258"></a>00258 <a class="code" href="classdrv__audio.html#a5dbf59270f992412d7d3ff03a24ce657">left_right_sample</a> <= <span class="vhdllogic">32'd0</span>;
<a name="l00259"></a>00259 <a class="code" href="classdrv__audio.html#a25d2e9a7059013f2ae7a281d729a7979">ac_bclk</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00260"></a>00260 <a class="code" href="classdrv__audio.html#a0fb0297ccc93f879e1944a914a271bf8">ac_lr</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00261"></a>00261
<a name="l00262"></a>00262 <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a> <= <span class="vhdllogic">30'd0</span>;
<a name="l00263"></a>00263 <a class="code" href="classdrv__audio.html#a6c39c0233ca1aa3bb56c28594a1806db">ly_n2</a> <= <span class="vhdllogic">30'd0</span>;
<a name="l00264"></a>00264 <a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a> <= <span class="vhdllogic">30'd0</span>;
<a name="l00265"></a>00265 <a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">lx_n2</a> <= <span class="vhdllogic">30'd0</span>;
<a name="l00266"></a>00266 <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a> <= <span class="vhdllogic">30'd0</span>;
<a name="l00267"></a>00267 <a class="code" href="classdrv__audio.html#a419fd6ff4e0c8202fda49d41465b6051">ry_n2</a> <= <span class="vhdllogic">30'd0</span>;
<a name="l00268"></a>00268 <a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a> <= <span class="vhdllogic">30'd0</span>;
<a name="l00269"></a>00269 <a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">rx_n2</a> <= <span class="vhdllogic">30'd0</span>;
<a name="l00270"></a>00270 <span class="vhdlkeyword">end</span>
<a name="l00271"></a>00271 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> == <span class="vhdllogic">8'd0</span> && <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> == <a class="code" href="classdrv__audio.html#a565a121973b864c57f84f2a1994e05da">S_READY</a>) <span class="vhdlkeyword">begin</span>
<a name="l00272"></a>00272 <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> <= <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> + <span class="vhdllogic">8'd1</span>;
<a name="l00273"></a>00273 <a class="code" href="classdrv__audio.html#a5dbf59270f992412d7d3ff03a24ce657">left_right_sample</a> <= { <a class="code" href="classdrv__audio.html#a0a83ccd141355b678587a04a5eb58c26">ly_n</a>[<span class="vhdllogic">29</span>:<span class="vhdllogic">14</span>], <a class="code" href="classdrv__audio.html#a655a482bd8741d711dd309a2a821dff4">ry_n</a>[<span class="vhdllogic">29</span>:<span class="vhdllogic">14</span>] };
<a name="l00274"></a>00274 <a class="code" href="classdrv__audio.html#a25d2e9a7059013f2ae7a281d729a7979">ac_bclk</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00275"></a>00275 <a class="code" href="classdrv__audio.html#a0fb0297ccc93f879e1944a914a271bf8">ac_lr</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00276"></a>00276
<a name="l00277"></a>00277 <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a> <= <a class="code" href="classdrv__audio.html#a0a83ccd141355b678587a04a5eb58c26">ly_n</a>;
<a name="l00278"></a>00278 <a class="code" href="classdrv__audio.html#a6c39c0233ca1aa3bb56c28594a1806db">ly_n2</a> <= <a class="code" href="classdrv__audio.html#ab523b359492577b640b9f4152f7b08a2">ly_n1</a>;
<a name="l00279"></a>00279 <a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a> <= <a class="code" href="classdrv__audio.html#a58189f84b7221500303201a8208abf68">lx_n</a>;
<a name="l00280"></a>00280 <a class="code" href="classdrv__audio.html#ae03647729399e591be9e858110930c31">lx_n2</a> <= <a class="code" href="classdrv__audio.html#a9fd27d89547276f1b76f682fb3f92974">lx_n1</a>;
<a name="l00281"></a>00281 <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a> <= <a class="code" href="classdrv__audio.html#a655a482bd8741d711dd309a2a821dff4">ry_n</a>;
<a name="l00282"></a>00282 <a class="code" href="classdrv__audio.html#a419fd6ff4e0c8202fda49d41465b6051">ry_n2</a> <= <a class="code" href="classdrv__audio.html#ac8a6909e34b5ce22fecdf3439833e600">ry_n1</a>;
<a name="l00283"></a>00283 <a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a> <= <a class="code" href="classdrv__audio.html#a7b045dbb8bc6afb90b8385235cebba8d">rx_n</a>;
<a name="l00284"></a>00284 <a class="code" href="classdrv__audio.html#a63e63647a6688ab78cb576ac1e60d2f6">rx_n2</a> <= <a class="code" href="classdrv__audio.html#a8896b8d86dc61be2805b86f5324d6795">rx_n1</a>;
<a name="l00285"></a>00285
<a name="l00286"></a>00286 <span class="vhdlkeyword">end</span>
<a name="l00287"></a>00287 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> == <span class="vhdllogic">8'd1</span>) <span class="vhdlkeyword">begin</span>
<a name="l00288"></a>00288 <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> <= <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> + <span class="vhdllogic">8'd1</span>;
<a name="l00289"></a>00289 <a class="code" href="classdrv__audio.html#a25d2e9a7059013f2ae7a281d729a7979">ac_bclk</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00290"></a>00290 <a class="code" href="classdrv__audio.html#a0fb0297ccc93f879e1944a914a271bf8">ac_lr</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00291"></a>00291 <span class="vhdlkeyword">end</span>
<a name="l00292"></a>00292 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> >= <span class="vhdllogic">8'd127</span> && <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> <= <span class="vhdllogic">8'd248</span>) <span class="vhdlkeyword">begin</span>
<a name="l00293"></a>00293 <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> <= <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> + <span class="vhdllogic">8'd1</span>;
<a name="l00294"></a>00294 <a class="code" href="classdrv__audio.html#a5dbf59270f992412d7d3ff03a24ce657">left_right_sample</a> <= { <a class="code" href="classdrv__audio.html#a5dbf59270f992412d7d3ff03a24ce657">left_right_sample</a>[<span class="vhdllogic">30</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">1'b0</span> };
<a name="l00295"></a>00295 <a class="code" href="classdrv__audio.html#a25d2e9a7059013f2ae7a281d729a7979">ac_bclk</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00296"></a>00296 <a class="code" href="classdrv__audio.html#a0fb0297ccc93f879e1944a914a271bf8">ac_lr</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00297"></a>00297 <span class="vhdlkeyword">end</span>
<a name="l00298"></a>00298 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> == <span class="vhdllogic">8'd249</span>) <span class="vhdlkeyword">begin</span>
<a name="l00299"></a>00299 <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> <= <span class="vhdllogic">8'd0</span>;
<a name="l00300"></a>00300 <a class="code" href="classdrv__audio.html#a25d2e9a7059013f2ae7a281d729a7979">ac_bclk</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00301"></a>00301 <a class="code" href="classdrv__audio.html#a0fb0297ccc93f879e1944a914a271bf8">ac_lr</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00302"></a>00302 <span class="vhdlkeyword">end</span>
<a name="l00303"></a>00303 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a>[<span class="vhdllogic">1</span>:<span class="vhdllogic">0</span>] == <span class="vhdllogic">2'b11</span>) <span class="vhdlkeyword">begin</span>
<a name="l00304"></a>00304 <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> <= <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> + <span class="vhdllogic">8'd1</span>;
<a name="l00305"></a>00305 <a class="code" href="classdrv__audio.html#a5dbf59270f992412d7d3ff03a24ce657">left_right_sample</a> <= { <a class="code" href="classdrv__audio.html#a5dbf59270f992412d7d3ff03a24ce657">left_right_sample</a>[<span class="vhdllogic">30</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">1'b0</span> };
<a name="l00306"></a>00306 <a class="code" href="classdrv__audio.html#a25d2e9a7059013f2ae7a281d729a7979">ac_bclk</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00307"></a>00307 <a class="code" href="classdrv__audio.html#a0fb0297ccc93f879e1944a914a271bf8">ac_lr</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00308"></a>00308 <span class="vhdlkeyword">end</span>
<a name="l00309"></a>00309 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a>[<span class="vhdllogic">1</span>:<span class="vhdllogic">0</span>] == <span class="vhdllogic">2'b01</span>) <span class="vhdlkeyword">begin</span>
<a name="l00310"></a>00310 <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> <= <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> + <span class="vhdllogic">8'd1</span>;
<a name="l00311"></a>00311 <a class="code" href="classdrv__audio.html#a25d2e9a7059013f2ae7a281d729a7979">ac_bclk</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00312"></a>00312 <a class="code" href="classdrv__audio.html#a0fb0297ccc93f879e1944a914a271bf8">ac_lr</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00313"></a>00313 <span class="vhdlkeyword">end</span>
<a name="l00314"></a>00314 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> != <span class="vhdllogic">8'd0</span> && <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> == <a class="code" href="classdrv__audio.html#a565a121973b864c57f84f2a1994e05da">S_READY</a>) <span class="vhdlkeyword">begin</span>
<a name="l00315"></a>00315 <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> <= <a class="code" href="classdrv__audio.html#afefa13b53f75cae5e68c7d2ef36d3666">data_counter</a> + <span class="vhdllogic">8'd1</span>;
<a name="l00316"></a>00316 <span class="vhdlkeyword">end</span>
<a name="l00317"></a>00317 <span class="vhdlkeyword">end</span>
<a name="l00318"></a>00318
<a name="l00319"></a><a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">00319</a> <span class="vhdlkeyword">reg</span> <a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a>;
<a name="l00320"></a><a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">00320</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">15</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">i2c_data</a>;
<a name="l00321"></a><a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">00321</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">3</span>:<span class="vhdllogic">0</span>] <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a>;
<a name="l00322"></a>00322
<a name="l00323"></a><a class="code" href="classdrv__audio.html#a565a121973b864c57f84f2a1994e05da">00323</a> <span class="vhdlkeyword">parameter</span> [<span class="vhdllogic">3</span>:<span class="vhdllogic">0</span>]
<a name="l00324"></a>00324 <a class="code" href="classdrv__audio.html#a1709da1ff908d450d5267e16456465e9">S_IDLE</a> = <span class="vhdllogic">4'd0</span>,
<a name="l00325"></a>00325 <a class="code" href="classdrv__audio.html#a95d20905bec24ea08f039eb9ff4ee75c">S_RESET</a> = <span class="vhdllogic">4'd1</span>,
<a name="l00326"></a>00326 <a class="code" href="classdrv__audio.html#a802f424a3192572d6901427d805b1fd6">S_POWER</a> = <span class="vhdllogic">4'd2</span>,
<a name="l00327"></a>00327 <a class="code" href="classdrv__audio.html#acdbbbe3793b7b0642746079a4fcf18a1">S_OUTPUT</a> = <span class="vhdllogic">4'd3</span>,
<a name="l00328"></a>00328 <a class="code" href="classdrv__audio.html#aee33f8a4455520899e7fbc71091c4555">S_SIDE</a> = <span class="vhdllogic">4'd4</span>,
<a name="l00329"></a>00329 <a class="code" href="classdrv__audio.html#a5f83e96ca0de5a012966f91f2dbb8b9c">S_EMPH</a> = <span class="vhdllogic">4'd5</span>,
<a name="l00330"></a>00330 <a class="code" href="classdrv__audio.html#ac41661d7bdcbdd6bb146d4e6b27abadc">S_FORMAT</a> = <span class="vhdllogic">4'd6</span>,
<a name="l00331"></a>00331 <a class="code" href="classdrv__audio.html#a41dff9548db2546ee6b0f6a0c6ad9a6b">S_SAMPLING</a> = <span class="vhdllogic">4'd7</span>,
<a name="l00332"></a>00332 <a class="code" href="classdrv__audio.html#a047adeaf9774957fa7c6cedf84086f9d">S_ACTIVATE</a> = <span class="vhdllogic">4'd8</span>,
<a name="l00333"></a>00333 <a class="code" href="classdrv__audio.html#a565a121973b864c57f84f2a1994e05da">S_READY</a> = <span class="vhdllogic">4'd9</span>;
<a name="l00334"></a>00334
<a name="l00335"></a><a class="code" href="classdrv__audio.html#af9849620149dda75f73a8836f71b556c">00335</a> <span class="vhdlkeyword">wire</span> <a class="code" href="classdrv__audio.html#af9849620149dda75f73a8836f71b556c">i2c_ready</a>;
<a name="l00336"></a>00336
<a name="l00337"></a><a class="code" href="classdrv__audio.html#ab36e8a373c3b5a8855233dc83b7bfda9">00337</a> <a class="code" href="classdrv__audio.html#ab36e8a373c3b5a8855233dc83b7bfda9">i2c_send</a> <span class="vhdlchar">i2c_send_inst</span>(
<a name="l00338"></a>00338 .<a class="code" href="classi2c__send.html#a708e17b47daabe129d5eaed04a65a171">drv_audio</a>(<a class="code" href="classi2c__send.html#a708e17b47daabe129d5eaed04a65a171">drv_audio</a>),
<a name="l00339"></a>00339 .<a class="code" href="classi2c__send.html#a733ad86e63e20bed173765f0b2437491">drv_audio</a>(<a class="code" href="classi2c__send.html#a733ad86e63e20bed173765f0b2437491">drv_audio</a>),
<a name="l00340"></a>00340
<a name="l00341"></a>00341 .<a class="code" href="classi2c__send.html#a16719abf155262c304efda302dd694d3">drv_audio</a>(<a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a>),
<a name="l00342"></a>00342 .<a class="code" href="classi2c__send.html#a5e9f220fccef726ea8bf52ef4a34aa6d">drv_audio</a>(<a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">i2c_data</a>),
<a name="l00343"></a>00343 .<a class="code" href="classi2c__send.html#a0709a0805abdbb4fb5a5cc1374822918">drv_audio</a>(<a class="code" href="classdrv__audio.html#af9849620149dda75f73a8836f71b556c">i2c_ready</a>),
<a name="l00344"></a>00344
<a name="l00345"></a>00345 .<a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">drv_audio</a>(<a class="code" href="classdrv__audio.html#a638f5df1565b37c1dfee462766e994fb">ac_sclk</a>),
<a name="l00346"></a>00346 .<a class="code" href="classi2c__send.html#a2523d55da99a5f7ea41f42f075da759a">drv_audio</a>(<a class="code" href="classdrv__audio.html#a614103e1dff866ce70f61b7a0f946e00">ac_sdat</a>)
<a name="l00347"></a>00347 );
<a name="l00348"></a>00348
<a name="l00349"></a><a class="code" href="classdrv__audio.html#ab816749b8396685abedeb5c57fb8f6ed">00349</a> <span class="vhdlkeyword">always</span> @(<span class="vhdlkeyword">posedge</span> <a class="code" href="classdrv__audio.html#a82aa89e831131841dcc2f484cf5a43be">clk_12</a> <span class="vhdlkeyword">or</span> <span class="vhdlkeyword">negedge</span> <a class="code" href="classdrv__audio.html#a31e1c30ba7812ad59ba6a206d099ffee">reset_n</a>) <span class="vhdlkeyword">begin</span>
<a name="l00350"></a>00350 <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#a31e1c30ba7812ad59ba6a206d099ffee">reset_n</a> == <span class="vhdllogic">1'b0</span>) <span class="vhdlkeyword">begin</span>
<a name="l00351"></a>00351 <a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00352"></a>00352 <a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">i2c_data</a> <= <span class="vhdllogic">16'd0</span>;
<a name="l00353"></a>00353 <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> <= <a class="code" href="classdrv__audio.html#a1709da1ff908d450d5267e16456465e9">S_IDLE</a>;
<a name="l00354"></a>00354 <span class="vhdlkeyword">end</span>
<a name="l00355"></a>00355 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">begin</span>
<a name="l00356"></a>00356 <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> == <a class="code" href="classdrv__audio.html#a1709da1ff908d450d5267e16456465e9">S_IDLE</a>) <span class="vhdlkeyword">begin</span>
<a name="l00357"></a>00357 <a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00358"></a>00358 <a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">i2c_data</a> <= <span class="vhdllogic">16'b0001111_000000000</span>;
<a name="l00359"></a>00359 <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> <= <a class="code" href="classdrv__audio.html#a95d20905bec24ea08f039eb9ff4ee75c">S_RESET</a>;
<a name="l00360"></a>00360 <span class="vhdlkeyword">end</span>
<a name="l00361"></a>00361 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> == <a class="code" href="classdrv__audio.html#a95d20905bec24ea08f039eb9ff4ee75c">S_RESET</a> && <a class="code" href="classdrv__audio.html#af9849620149dda75f73a8836f71b556c">i2c_ready</a> == <span class="vhdllogic">1'b1</span>) <span class="vhdlkeyword">begin</span>
<a name="l00362"></a>00362 <a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00363"></a>00363 <a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">i2c_data</a> <= <span class="vhdllogic">16'b0000110_001100111</span>; <span class="keyword">// power down unused parts</span>
<a name="l00364"></a>00364 <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> <= <a class="code" href="classdrv__audio.html#a802f424a3192572d6901427d805b1fd6">S_POWER</a>;
<a name="l00365"></a>00365 <span class="vhdlkeyword">end</span>
<a name="l00366"></a>00366 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> == <a class="code" href="classdrv__audio.html#a802f424a3192572d6901427d805b1fd6">S_POWER</a> && <a class="code" href="classdrv__audio.html#af9849620149dda75f73a8836f71b556c">i2c_ready</a> == <span class="vhdllogic">1'b1</span>) <span class="vhdlkeyword">begin</span>
<a name="l00367"></a>00367 <a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00368"></a>00368 <a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">i2c_data</a> <= <span class="vhdllogic">16'b0000010_101111001</span>; <span class="keyword">// 0dB headphone output</span>
<a name="l00369"></a>00369 <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> <= <a class="code" href="classdrv__audio.html#acdbbbe3793b7b0642746079a4fcf18a1">S_OUTPUT</a>;
<a name="l00370"></a>00370 <span class="vhdlkeyword">end</span>
<a name="l00371"></a>00371 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> == <a class="code" href="classdrv__audio.html#acdbbbe3793b7b0642746079a4fcf18a1">S_OUTPUT</a> && <a class="code" href="classdrv__audio.html#af9849620149dda75f73a8836f71b556c">i2c_ready</a> == <span class="vhdllogic">1'b1</span>) <span class="vhdlkeyword">begin</span>
<a name="l00372"></a>00372 <a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00373"></a>00373 <a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">i2c_data</a> <= <span class="vhdllogic">16'b0000100_011010010</span>; <span class="keyword">// DAC select</span>
<a name="l00374"></a>00374 <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> <= <a class="code" href="classdrv__audio.html#aee33f8a4455520899e7fbc71091c4555">S_SIDE</a>;
<a name="l00375"></a>00375 <span class="vhdlkeyword">end</span>
<a name="l00376"></a>00376 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> == <a class="code" href="classdrv__audio.html#aee33f8a4455520899e7fbc71091c4555">S_SIDE</a> && <a class="code" href="classdrv__audio.html#af9849620149dda75f73a8836f71b556c">i2c_ready</a> == <span class="vhdllogic">1'b1</span>) <span class="vhdlkeyword">begin</span>
<a name="l00377"></a>00377 <a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00378"></a>00378 <a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">i2c_data</a> <= <span class="vhdllogic">16'b0000101_000000011</span>; <span class="keyword">// disable mute, 32kHz de-emphasis</span>
<a name="l00379"></a>00379 <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> <= <a class="code" href="classdrv__audio.html#a5f83e96ca0de5a012966f91f2dbb8b9c">S_EMPH</a>;
<a name="l00380"></a>00380 <span class="vhdlkeyword">end</span>
<a name="l00381"></a>00381 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> == <a class="code" href="classdrv__audio.html#a5f83e96ca0de5a012966f91f2dbb8b9c">S_EMPH</a> && <a class="code" href="classdrv__audio.html#af9849620149dda75f73a8836f71b556c">i2c_ready</a> == <span class="vhdllogic">1'b1</span>) <span class="vhdlkeyword">begin</span>
<a name="l00382"></a>00382 <a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00383"></a>00383 <a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">i2c_data</a> <= <span class="vhdllogic">16'b0000111_000000011</span>; <span class="keyword">// DSP mode</span>
<a name="l00384"></a>00384 <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> <= <a class="code" href="classdrv__audio.html#ac41661d7bdcbdd6bb146d4e6b27abadc">S_FORMAT</a>;
<a name="l00385"></a>00385 <span class="vhdlkeyword">end</span>
<a name="l00386"></a>00386 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> == <a class="code" href="classdrv__audio.html#ac41661d7bdcbdd6bb146d4e6b27abadc">S_FORMAT</a> && <a class="code" href="classdrv__audio.html#af9849620149dda75f73a8836f71b556c">i2c_ready</a> == <span class="vhdllogic">1'b1</span>) <span class="vhdlkeyword">begin</span>
<a name="l00387"></a>00387 <a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00388"></a>00388 <a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">i2c_data</a> <= <span class="vhdllogic">16'b0001000_000000001</span>; <span class="keyword">// USB mode, 12MHz, 48 kHz</span>
<a name="l00389"></a>00389 <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> <= <a class="code" href="classdrv__audio.html#a41dff9548db2546ee6b0f6a0c6ad9a6b">S_SAMPLING</a>;
<a name="l00390"></a>00390 <span class="vhdlkeyword">end</span>
<a name="l00391"></a>00391 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> == <a class="code" href="classdrv__audio.html#a41dff9548db2546ee6b0f6a0c6ad9a6b">S_SAMPLING</a> && <a class="code" href="classdrv__audio.html#af9849620149dda75f73a8836f71b556c">i2c_ready</a> == <span class="vhdllogic">1'b1</span>) <span class="vhdlkeyword">begin</span>
<a name="l00392"></a>00392 <a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00393"></a>00393 <a class="code" href="classdrv__audio.html#a125a47daeaea8237666189d86530d351">i2c_data</a> <= <span class="vhdllogic">16'b0001001_000000001</span>;
<a name="l00394"></a>00394 <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> <= <a class="code" href="classdrv__audio.html#a047adeaf9774957fa7c6cedf84086f9d">S_ACTIVATE</a>;
<a name="l00395"></a>00395 <span class="vhdlkeyword">end</span>
<a name="l00396"></a>00396 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> == <a class="code" href="classdrv__audio.html#a047adeaf9774957fa7c6cedf84086f9d">S_ACTIVATE</a> && <a class="code" href="classdrv__audio.html#af9849620149dda75f73a8836f71b556c">i2c_ready</a> == <span class="vhdllogic">1'b1</span>) <span class="vhdlkeyword">begin</span>
<a name="l00397"></a>00397 <a class="code" href="classdrv__audio.html#a2102d745447942ac039a093eb5df35a2">state</a> <= <a class="code" href="classdrv__audio.html#a565a121973b864c57f84f2a1994e05da">S_READY</a>;
<a name="l00398"></a>00398 <span class="vhdlkeyword">end</span>
<a name="l00399"></a>00399 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">begin</span>
<a name="l00400"></a>00400 <a class="code" href="classdrv__audio.html#ac44d4fc310441c51ffe6934ded980ac6">i2c_start</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00401"></a>00401 <span class="vhdlkeyword">end</span>
<a name="l00402"></a>00402 <span class="vhdlkeyword">end</span>
<a name="l00403"></a>00403 <span class="vhdlkeyword">end</span>
<a name="l00404"></a>00404
<a name="l00405"></a>00405 <span class="vhdlkeyword">endmodule</span>
<a name="l00406"></a>00406
<a name="l00407"></a>00407 <span class="keyword">/*! \brief I2C write helper module.</span>
<a name="l00408"></a>00408 <span class="keyword"> */</span>
<a name="l00409"></a><a class="code" href="classi2c__send.html">00409</a> <span class="vhdlkeyword">module</span> <a class="code" href="classdrv__audio.html#ab36e8a373c3b5a8855233dc83b7bfda9">i2c_send</a>(
<a name="l00410"></a><a class="code" href="classi2c__send.html#a708e17b47daabe129d5eaed04a65a171">00410</a> <span class="vhdlkeyword">input</span> <a class="code" href="classi2c__send.html#a708e17b47daabe129d5eaed04a65a171">clk_12</a>,
<a name="l00411"></a><a class="code" href="classi2c__send.html#a733ad86e63e20bed173765f0b2437491">00411</a> <span class="vhdlkeyword">input</span> <a class="code" href="classi2c__send.html#a733ad86e63e20bed173765f0b2437491">reset_n</a>,
<a name="l00412"></a>00412
<a name="l00413"></a><a class="code" href="classi2c__send.html#a16719abf155262c304efda302dd694d3">00413</a> <span class="vhdlkeyword">input</span> <a class="code" href="classi2c__send.html#a16719abf155262c304efda302dd694d3">start</a>,
<a name="l00414"></a><a class="code" href="classi2c__send.html#a5e9f220fccef726ea8bf52ef4a34aa6d">00414</a> <span class="vhdlkeyword">input</span> [<span class="vhdllogic">15</span>:<span class="vhdllogic">0</span>] <a class="code" href="classi2c__send.html#a5e9f220fccef726ea8bf52ef4a34aa6d">data</a>,
<a name="l00415"></a><a class="code" href="classi2c__send.html#a0709a0805abdbb4fb5a5cc1374822918">00415</a> <span class="vhdlkeyword">output</span> <a class="code" href="classi2c__send.html#a0709a0805abdbb4fb5a5cc1374822918">ready</a>,
<a name="l00416"></a>00416
<a name="l00417"></a><a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">00417</a> <span class="vhdlkeyword">output</span> <span class="vhdlkeyword">reg</span> <a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">sclk</a>,
<a name="l00418"></a><a class="code" href="classi2c__send.html#a2523d55da99a5f7ea41f42f075da759a">00418</a> <span class="vhdlkeyword">inout</span> <a class="code" href="classi2c__send.html#a2523d55da99a5f7ea41f42f075da759a">sdat</a>
<a name="l00419"></a>00419 );
<a name="l00420"></a>00420
<a name="l00421"></a>00421 <span class="vhdlkeyword">assign</span> <a class="code" href="classi2c__send.html#a0709a0805abdbb4fb5a5cc1374822918">ready</a> = (<a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> == <a class="code" href="classi2c__send.html#a10fa4592b69de1bcc10bb94bbb93f3c4">S_IDLE</a> && <a class="code" href="classi2c__send.html#a16719abf155262c304efda302dd694d3">start</a> == <span class="vhdllogic">1'b0</span>);
<a name="l00422"></a>00422 <span class="vhdlkeyword">assign</span> <a class="code" href="classi2c__send.html#a2523d55da99a5f7ea41f42f075da759a">sdat</a> = (<a class="code" href="classi2c__send.html#af1d1ac48b90baec6cdd848444a6fcbc7">sdat_oe</a> == <span class="vhdllogic">1'b0</span>)? <span class="vhdllogic">1'bZ</span> : <a class="code" href="classi2c__send.html#a0daf8778e37a3182e0622fcc54e81c3d">sdat_o</a>;
<a name="l00423"></a>00423
<a name="l00424"></a><a class="code" href="classi2c__send.html#af1d1ac48b90baec6cdd848444a6fcbc7">00424</a> <span class="vhdlkeyword">reg</span> <a class="code" href="classi2c__send.html#af1d1ac48b90baec6cdd848444a6fcbc7">sdat_oe</a>;
<a name="l00425"></a><a class="code" href="classi2c__send.html#a0daf8778e37a3182e0622fcc54e81c3d">00425</a> <span class="vhdlkeyword">reg</span> <a class="code" href="classi2c__send.html#a0daf8778e37a3182e0622fcc54e81c3d">sdat_o</a>;
<a name="l00426"></a><a class="code" href="classi2c__send.html#aaafed0ede4ac6da2a1e45b2f6223ecba">00426</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>] <a class="code" href="classi2c__send.html#aaafed0ede4ac6da2a1e45b2f6223ecba">dat_byte</a>;
<a name="l00427"></a><a class="code" href="classi2c__send.html#af8339b492e53e2a6502d087c1333ed38">00427</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">1</span>:<span class="vhdllogic">0</span>] <a class="code" href="classi2c__send.html#af8339b492e53e2a6502d087c1333ed38">part</a>;
<a name="l00428"></a><a class="code" href="classi2c__send.html#a319cc4177782a5a9cc27ff23140b9a52">00428</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">2</span>:<span class="vhdllogic">0</span>] <a class="code" href="classi2c__send.html#a319cc4177782a5a9cc27ff23140b9a52">counter</a>;
<a name="l00429"></a><a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">00429</a> <span class="vhdlkeyword">reg</span> [<span class="vhdllogic">3</span>:<span class="vhdllogic">0</span>] <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a>;
<a name="l00430"></a><a class="code" href="classi2c__send.html#a4eca00d78060b52c12ccb542d4a5fd77">00430</a> <span class="vhdlkeyword">parameter</span> [<span class="vhdllogic">3</span>:<span class="vhdllogic">0</span>]
<a name="l00431"></a>00431 <a class="code" href="classi2c__send.html#a10fa4592b69de1bcc10bb94bbb93f3c4">S_IDLE</a> = <span class="vhdllogic">4'd0</span>,
<a name="l00432"></a>00432 <a class="code" href="classi2c__send.html#a706d00c84416c536ff6777bf6c8b2ed0">S_SEND_0</a> = <span class="vhdllogic">4'd1</span>,
<a name="l00433"></a>00433 <a class="code" href="classi2c__send.html#a6d3e662cf5d33b8562eb869646336c67">S_SEND_1</a> = <span class="vhdllogic">4'd2</span>,
<a name="l00434"></a>00434 <a class="code" href="classi2c__send.html#af264e1965ad1ead47b51c5dc20373b95">S_SEND_2</a> = <span class="vhdllogic">4'd3</span>,
<a name="l00435"></a>00435 <a class="code" href="classi2c__send.html#a16fbc420a1c5d776c3e04e7d87c735c2">S_SEND_3</a> = <span class="vhdllogic">4'd4</span>,
<a name="l00436"></a>00436 <a class="code" href="classi2c__send.html#af20956405e91c860a5ac3475545a13c0">S_SEND_4</a> = <span class="vhdllogic">4'd5</span>,
<a name="l00437"></a>00437 <a class="code" href="classi2c__send.html#ace21a6633d5dded1bf1cc8ac9033a95c">S_END_0</a> = <span class="vhdllogic">4'd6</span>,
<a name="l00438"></a>00438 <a class="code" href="classi2c__send.html#a73ec731292d0a2cf2407cbf0c05e87ee">S_END_1</a> = <span class="vhdllogic">4'd7</span>,
<a name="l00439"></a>00439 <a class="code" href="classi2c__send.html#a4eca00d78060b52c12ccb542d4a5fd77">S_END_2</a> = <span class="vhdllogic">4'd8</span>;
<a name="l00440"></a>00440
<a name="l00441"></a><a class="code" href="classi2c__send.html#a04fc4157242c2a06a84cb64f086dfceb">00441</a> <span class="vhdlkeyword">always</span> @(<span class="vhdlkeyword">posedge</span> <a class="code" href="classi2c__send.html#a708e17b47daabe129d5eaed04a65a171">clk_12</a> <span class="vhdlkeyword">or</span> <span class="vhdlkeyword">negedge</span> <a class="code" href="classi2c__send.html#a733ad86e63e20bed173765f0b2437491">reset_n</a>) <span class="vhdlkeyword">begin</span>
<a name="l00442"></a>00442 <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#a733ad86e63e20bed173765f0b2437491">reset_n</a> == <span class="vhdllogic">1'b0</span>) <span class="vhdlkeyword">begin</span>
<a name="l00443"></a>00443 <a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">sclk</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00444"></a>00444 <a class="code" href="classi2c__send.html#af1d1ac48b90baec6cdd848444a6fcbc7">sdat_oe</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00445"></a>00445 <a class="code" href="classi2c__send.html#a0daf8778e37a3182e0622fcc54e81c3d">sdat_o</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00446"></a>00446 <a class="code" href="classi2c__send.html#aaafed0ede4ac6da2a1e45b2f6223ecba">dat_byte</a> <= <span class="vhdllogic">8'd0</span>;
<a name="l00447"></a>00447 <a class="code" href="classi2c__send.html#af8339b492e53e2a6502d087c1333ed38">part</a> <= <span class="vhdllogic">2'b0</span>;
<a name="l00448"></a>00448 <a class="code" href="classi2c__send.html#a319cc4177782a5a9cc27ff23140b9a52">counter</a> <= <span class="vhdllogic">3'd0</span>;
<a name="l00449"></a>00449 <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#a10fa4592b69de1bcc10bb94bbb93f3c4">S_IDLE</a>;
<a name="l00450"></a>00450 <span class="vhdlkeyword">end</span>
<a name="l00451"></a>00451 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> == <a class="code" href="classi2c__send.html#a10fa4592b69de1bcc10bb94bbb93f3c4">S_IDLE</a> && <a class="code" href="classi2c__send.html#a16719abf155262c304efda302dd694d3">start</a> == <span class="vhdllogic">1'b1</span>) <span class="vhdlkeyword">begin</span>
<a name="l00452"></a>00452 <span class="keyword">// start</span>
<a name="l00453"></a>00453 <a class="code" href="classi2c__send.html#af1d1ac48b90baec6cdd848444a6fcbc7">sdat_oe</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00454"></a>00454 <a class="code" href="classi2c__send.html#a0daf8778e37a3182e0622fcc54e81c3d">sdat_o</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00455"></a>00455 <a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">sclk</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00456"></a>00456
<a name="l00457"></a>00457 <a class="code" href="classi2c__send.html#af8339b492e53e2a6502d087c1333ed38">part</a> <= <span class="vhdllogic">2'b0</span>;
<a name="l00458"></a>00458 <a class="code" href="classi2c__send.html#aaafed0ede4ac6da2a1e45b2f6223ecba">dat_byte</a> <= <span class="vhdllogic">8'b0011010_0</span>;
<a name="l00459"></a>00459 <a class="code" href="classi2c__send.html#a319cc4177782a5a9cc27ff23140b9a52">counter</a> <= <span class="vhdllogic">3'd7</span>;
<a name="l00460"></a>00460 <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#a706d00c84416c536ff6777bf6c8b2ed0">S_SEND_0</a>;
<a name="l00461"></a>00461 <span class="vhdlkeyword">end</span>
<a name="l00462"></a>00462 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> == <a class="code" href="classi2c__send.html#a706d00c84416c536ff6777bf6c8b2ed0">S_SEND_0</a>) <span class="vhdlkeyword">begin</span>
<a name="l00463"></a>00463 <a class="code" href="classi2c__send.html#af1d1ac48b90baec6cdd848444a6fcbc7">sdat_oe</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00464"></a>00464 <a class="code" href="classi2c__send.html#a0daf8778e37a3182e0622fcc54e81c3d">sdat_o</a> <= <a class="code" href="classi2c__send.html#aaafed0ede4ac6da2a1e45b2f6223ecba">dat_byte</a>[<span class="vhdllogic">7</span>];
<a name="l00465"></a>00465 <a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">sclk</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00466"></a>00466 <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#a6d3e662cf5d33b8562eb869646336c67">S_SEND_1</a>;
<a name="l00467"></a>00467 <span class="vhdlkeyword">end</span>
<a name="l00468"></a>00468 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> == <a class="code" href="classi2c__send.html#a6d3e662cf5d33b8562eb869646336c67">S_SEND_1</a>) <span class="vhdlkeyword">begin</span>
<a name="l00469"></a>00469 <a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">sclk</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00470"></a>00470
<a name="l00471"></a>00471 <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#a319cc4177782a5a9cc27ff23140b9a52">counter</a> == <span class="vhdllogic">3'd0</span>) <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#af264e1965ad1ead47b51c5dc20373b95">S_SEND_2</a>;
<a name="l00472"></a>00472 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">begin</span>
<a name="l00473"></a>00473 <a class="code" href="classi2c__send.html#aaafed0ede4ac6da2a1e45b2f6223ecba">dat_byte</a> <= { <a class="code" href="classi2c__send.html#aaafed0ede4ac6da2a1e45b2f6223ecba">dat_byte</a>[<span class="vhdllogic">6</span>:<span class="vhdllogic">0</span>], <span class="vhdllogic">1'b0</span> };
<a name="l00474"></a>00474 <a class="code" href="classi2c__send.html#a319cc4177782a5a9cc27ff23140b9a52">counter</a> <= <a class="code" href="classi2c__send.html#a319cc4177782a5a9cc27ff23140b9a52">counter</a> - <span class="vhdllogic">3'd1</span>;
<a name="l00475"></a>00475 <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#a706d00c84416c536ff6777bf6c8b2ed0">S_SEND_0</a>;
<a name="l00476"></a>00476 <span class="vhdlkeyword">end</span>
<a name="l00477"></a>00477 <span class="vhdlkeyword">end</span>
<a name="l00478"></a>00478 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> == <a class="code" href="classi2c__send.html#af264e1965ad1ead47b51c5dc20373b95">S_SEND_2</a>) <span class="vhdlkeyword">begin</span>
<a name="l00479"></a>00479 <a class="code" href="classi2c__send.html#af1d1ac48b90baec6cdd848444a6fcbc7">sdat_oe</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00480"></a>00480 <a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">sclk</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00481"></a>00481 <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#a16fbc420a1c5d776c3e04e7d87c735c2">S_SEND_3</a>;
<a name="l00482"></a>00482 <span class="vhdlkeyword">end</span>
<a name="l00483"></a>00483 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> == <a class="code" href="classi2c__send.html#a16fbc420a1c5d776c3e04e7d87c735c2">S_SEND_3</a>) <span class="vhdlkeyword">begin</span>
<a name="l00484"></a>00484 <a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">sclk</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00485"></a>00485 <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#af20956405e91c860a5ac3475545a13c0">S_SEND_4</a>;
<a name="l00486"></a>00486 <span class="vhdlkeyword">end</span>
<a name="l00487"></a>00487 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> == <a class="code" href="classi2c__send.html#af20956405e91c860a5ac3475545a13c0">S_SEND_4</a> && <a class="code" href="classi2c__send.html#a2523d55da99a5f7ea41f42f075da759a">sdat</a> == <span class="vhdllogic">1'b0</span>) <span class="vhdlkeyword">begin</span>
<a name="l00488"></a>00488 <a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">sclk</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00489"></a>00489 <a class="code" href="classi2c__send.html#af8339b492e53e2a6502d087c1333ed38">part</a> <= <a class="code" href="classi2c__send.html#af8339b492e53e2a6502d087c1333ed38">part</a> + <span class="vhdllogic">2'b1</span>;
<a name="l00490"></a>00490 <a class="code" href="classi2c__send.html#a319cc4177782a5a9cc27ff23140b9a52">counter</a> <= <span class="vhdllogic">3'd7</span>;
<a name="l00491"></a>00491
<a name="l00492"></a>00492 <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#af8339b492e53e2a6502d087c1333ed38">part</a> == <span class="vhdllogic">2'd0</span>) <a class="code" href="classi2c__send.html#aaafed0ede4ac6da2a1e45b2f6223ecba">dat_byte</a> <= <a class="code" href="classi2c__send.html#a5e9f220fccef726ea8bf52ef4a34aa6d">data</a>[<span class="vhdllogic">15</span>:<span class="vhdllogic">8</span>];
<a name="l00493"></a>00493 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#af8339b492e53e2a6502d087c1333ed38">part</a> == <span class="vhdllogic">2'd1</span>) <a class="code" href="classi2c__send.html#aaafed0ede4ac6da2a1e45b2f6223ecba">dat_byte</a> <= <a class="code" href="classi2c__send.html#a5e9f220fccef726ea8bf52ef4a34aa6d">data</a>[<span class="vhdllogic">7</span>:<span class="vhdllogic">0</span>];
<a name="l00494"></a>00494
<a name="l00495"></a>00495 <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#af8339b492e53e2a6502d087c1333ed38">part</a> == <span class="vhdllogic">2'd0</span> || <a class="code" href="classi2c__send.html#af8339b492e53e2a6502d087c1333ed38">part</a> == <span class="vhdllogic">2'd1</span>) <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#a706d00c84416c536ff6777bf6c8b2ed0">S_SEND_0</a>;
<a name="l00496"></a>00496 <span class="vhdlkeyword">else</span> <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#ace21a6633d5dded1bf1cc8ac9033a95c">S_END_0</a>;
<a name="l00497"></a>00497 <span class="vhdlkeyword">end</span>
<a name="l00498"></a>00498 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> == <a class="code" href="classi2c__send.html#ace21a6633d5dded1bf1cc8ac9033a95c">S_END_0</a>) <span class="vhdlkeyword">begin</span>
<a name="l00499"></a>00499 <a class="code" href="classi2c__send.html#af1d1ac48b90baec6cdd848444a6fcbc7">sdat_oe</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00500"></a>00500 <a class="code" href="classi2c__send.html#a0daf8778e37a3182e0622fcc54e81c3d">sdat_o</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00501"></a>00501 <a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">sclk</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00502"></a>00502 <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#a73ec731292d0a2cf2407cbf0c05e87ee">S_END_1</a>;
<a name="l00503"></a>00503 <span class="vhdlkeyword">end</span>
<a name="l00504"></a>00504 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> == <a class="code" href="classi2c__send.html#a73ec731292d0a2cf2407cbf0c05e87ee">S_END_1</a>) <span class="vhdlkeyword">begin</span>
<a name="l00505"></a>00505 <a class="code" href="classi2c__send.html#afc04233b8d978becb0c353e939c5f16d">sclk</a> <= <span class="vhdllogic">1'b1</span>;
<a name="l00506"></a>00506 <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#a4eca00d78060b52c12ccb542d4a5fd77">S_END_2</a>;
<a name="l00507"></a>00507 <span class="vhdlkeyword">end</span>
<a name="l00508"></a>00508 <span class="vhdlkeyword">else</span> <span class="vhdlkeyword">if</span>(<a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> == <a class="code" href="classi2c__send.html#a4eca00d78060b52c12ccb542d4a5fd77">S_END_2</a>) <span class="vhdlkeyword">begin</span>
<a name="l00509"></a>00509 <span class="keyword">// end</span>
<a name="l00510"></a>00510 <a class="code" href="classi2c__send.html#af1d1ac48b90baec6cdd848444a6fcbc7">sdat_oe</a> <= <span class="vhdllogic">1'b0</span>;
<a name="l00511"></a>00511 <a class="code" href="classi2c__send.html#a14e7523ffb7550058292a2da684f1046">state</a> <= <a class="code" href="classi2c__send.html#a10fa4592b69de1bcc10bb94bbb93f3c4">S_IDLE</a>;
<a name="l00512"></a>00512 <span class="vhdlkeyword">end</span>
<a name="l00513"></a>00513 <span class="vhdlkeyword">end</span>
<a name="l00514"></a>00514
<a name="l00515"></a>00515 <span class="vhdlkeyword">endmodule</span>
</pre></div></div>
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<hr class="footer"/><address class="footer"><small>Generated on Mon Dec 20 2010 21:20:18 for aoOCS by 
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.2 </small></address>
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