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<title>
Documentation of VHDL-AMS models
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<table width="802" cellspacing="2" cellpadding="8" border="0">
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<td class="Title" width="802" colspan="2">Voltage controlled oscillator
</td>
</tr>
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<td class="SectionHeader" width="100">
Model Name
</td><td class="SectionText" width="700">
<model_name>VCO(DIGITAL)</model_name>
</td>
</tr>
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<td class="SectionHeader" width="100">
Symbol
</td><td class="SectionText" width="700"><img alt="No Symbol" src="../symbol/vcod.png">
</td>
</tr>
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<td class="SectionHeader" width="100">
Generics
</td><td class="SectionText" width="700">
<table cellspacing="2" cellpadding="4" border="0">
<tr>
<td class="TableHeader">
Name
</td><td class="TableHeader">
Type
</td><td class="TableHeader">
Default
</td><td class="TableHeader">
Unit
</td><td class="TableHeader">
Min
</td><td class="TableHeader">
Description
</td>
</tr>
<tr>
<td class="TableText">DC
</td><td class="TableText">REAL
</td><td class="TableText">0.0
</td><td class="TableText">V
</td><td class="TableText">
</td><td class="TableText"> dc offset of oscillator
</td>
</tr>
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<td class="TableText">AMPL_DBM
</td><td class="TableText">REAL
</td><td class="TableText">-100.0
</td><td class="TableText">dBm
</td><td class="TableText">
</td><td class="TableText"> amplitude of sine wave
</td>
</tr>
<tr>
<td class="TableText">FREQ_0
</td><td class="TableText">REAL
</td><td class="TableText">1.0E03
</td><td class="TableText">Hz
</td><td class="TableText"> >0.0
</td><td class="TableText"> free running frequency
</td>
</tr>
<tr>
<td class="TableText">PHASE_0
</td><td class="TableText">REAL
</td><td class="TableText">0.0
</td><td class="TableText">rad
</td><td class="TableText">
</td><td class="TableText"> constant phase offset
</td>
</tr>
<tr>
<td class="TableText">K_FREQ
</td><td class="TableText">REAL
</td><td class="TableText">1.0E06
</td><td class="TableText">Hz/V
</td><td class="TableText">
</td><td class="TableText"> sensitivity of voltage input
</td>
</tr>
<tr>
<td class="TableText">RIN
</td><td class="TableText">REAL
</td><td class="TableText">50.0
</td><td class="TableText">Ohm
</td><td class="TableText"> >0.0
</td><td class="TableText"> input resistance
</td>
</tr>
<tr>
<td class="TableText">ROUT
</td><td class="TableText">REAL
</td><td class="TableText">50.0
</td><td class="TableText">Ohm
</td><td class="TableText"> >0.0
</td><td class="TableText"> output resistance
</td>
</tr>
</table>
</td>
</tr>
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<td class="SectionHeader" width="100">
Ports
</td><td class="SectionText" width="700">
<table cellspacing="2" cellpadding="4" border="0">
<tr>
<td class="TableHeader">
Interface
</td><td class="TableHeader">
Name
</td><td class="TableHeader">
Type/Nature
</td><td class="TableHeader">
Description
</td>
</tr>
<tr>
<td class="TableText">terminal
</td><td class="TableText">P_CTRL
</td><td class="TableText">ELECTRICAL
</td><td class="TableText"> control pin
</td>
</tr>
<tr>
<td class="TableText">terminal
</td><td class="TableText">P_OUT
</td><td class="TableText">ELECTRICAL
</td><td class="TableText"> output pin
</td>
</tr>
<tr>
<td class="TableText">terminal
</td><td class="TableText">VDD
</td><td class="TableText">ELECTRICAL
</td><td class="TableText"> supply voltage
</td>
</tr>
<tr>
<td class="TableText">terminal
</td><td class="TableText">GND
</td><td class="TableText">ELECTRICAL
</td><td class="TableText"> reference pin
</td>
</tr>
</table>
</td>
</tr>
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<td class="SectionHeader" width="100">
Description
</td><td class="SectionText" width="700">
<description>The test-bench describes a voltage controlled oscillator<br>which includes an analog and a digital architecture.<br>The analog realization uses a sine wave with tunable frequency<br>while the digital realization uses a process that produces<br>a square wave.<br>
</description>
</td>
</tr>
<tr>
<td class="SectionHeader" width="100">
Dependencies
</td><td class="SectionText" width="700">
<table cellspacing="2" cellpadding="4" border="0">
<tr>
<td class="TableHeader">
Logical Library
</td><td class="TableHeader">
Design Unit/Design Entity
</td>
</tr>
<tr>
<td class="TableText">IEEE_proposed
</td><td class="TableText">ELECTRICAL_SYSTEMS
</td>
</tr>
<tr>
<td class="TableText">IEEE
</td><td class="TableText">MATH_REAL
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td class="SectionHeader" width="100">
Source
</td><td class="SectionText" width="700">
<link_source>
<A HREF="../src/vcod.vhd">See source code</A>
</link_source>
</td>
</tr>
<tr>
<td class="SectionHeader" width="100">
Example
</td><td class="SectionText" width="700"><A HREF="../tb/doc/bench.html">See test-bench</A></td>
</tr>
</table>
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