When bringing in ODB++ and Extracta designs through AnsTranslator, Nets is automatically assigned into two distinct Net/Classes: "Power/Ground Nets" or "Non Power/Ground Nets". These can be overridden through the .xml control file. A sample xml file is included in the following diagram, with an explanation that follows.
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<c:Control xmlns:c="http://www.ansys.com/control" schemaVersion="1.0">
<Nets>
<Net Name="GND" IsSignalNet="false" />
<Net Name="VCC"/>
<Net Name="Battery"/>
<Net Name="Batt_Sense"/>
<Net Name="change"/>
<Net Name="CLK"/>
<Net Name="data[0]">
<NetClass Name="data" />
<NetClass Name="sig" />
</Net>
<Net Name="data[1]">
<NetClass Name="data" />
<NetClass Name="sig" />
</Net>
<Net Name="data[2]">
<NetClass Name="data" />
<NetClass Name="sig" />
</Net>
<Net Name="data[3]">
<NetClass Name="data" />
<NetClass Name="sig" />
</Net>
<Net Name="data[4]">
<NetClass Name="data" />
<NetClass Name="sig" />
</Net>
</Nets>
</c:Control>
- If a net is not included in the list of nets it are not imported into the design. This an excellent way to look at a small subset of the design.
- If "IsSignalNet" = "false", it is automatically assigned to the "Power/Ground Nets". If it is "true", it are assigned to "Non Power/Ground Nets".
- If a NetClass has been assigned, it is not placed into the default categories, unless the "IsSignalNet" attribute is set or the NetClass is explicitly specified.