a2d.xml

springer_-modeling_and_simulation_for_rf_system_design所有配套光盘源码5-11章

<?xml version="1.0" encoding="ISO-8859-1"?>
<?xml-stylesheet href="/usr/local/vamdoc-1.0.2-kluwer/config/model.xsl" type="text/xsl"?>
<!DOCTYPE model SYSTEM "/usr/local/vamdoc-1.0.2-kluwer/config/model.dtd"><model>
  <symbol>../symbol/a2d.png</symbol>
  <comments>
    <title>A-to-D Converter</title>
    <model_name>A2D(IDEAL)<br></br>A2D(EXTENDED)</model_name>
    <library>N/A</library>
    <structure>N/A</structure>
    <description>The output signal is '1' if the input voltage is above LEVEL.<br></br>Otherwise it is '0'.<br></br>The architecture EXTENDED includes a hysteresis HYST.<br></br>Thus, changes to '1' occur at LEVEL+HYST/2. Changes to '0'<br></br>occur at LEVEL-HYST/2.<br></br><br></br></description>
    <link_source><A HREF="../src/a2d.vhd">See source code</A></link_source>
    <dependency>
      <library>IEEE_proposed</library>
      <design_unit>ELECTRICAL_SYSTEMS</design_unit>
    </dependency>
    <dependency>
      <library>IEEE</library>
      <design_unit>STD_LOGIC_1164</design_unit>
    </dependency>
  </comments>
  <interface>
    <parameter>
      <name>LEVEL</name>
      <type>REAL</type>
      <default>2.5</default>
      <unit>V</unit>
      <comment> threshold level </comment>
    </parameter>
    <parameter>
      <name>HYST</name>
      <type>REAL</type>
      <default>0.0</default>
      <unit>V</unit>
      <min> &gt;= 0.0</min>
      <comment> hysteresis </comment>
    </parameter>
    <port>
      <port_id>terminal</port_id>
      <name>INP</name>
      <port_type>ELECTRICAL</port_type>
      <comment> controlling terminal</comment>
    </port>
    <port>
      <port_id>signal</port_id>
      <name>S_OUT</name>
      <port_type>STD_LOGIC</port_type>
      <default>'0'</default>
      <mode>out</mode>
      <comment> output signal</comment>
    </port>
  </interface>
</model>