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Ansoft Designer / Ansys Designer 在线帮助文档：

Importing and Exporting Data >
   Layout and ODB++ Control File       

Layout and ODB++ Control File

ODB++ directories do not contain certain information that is required by Designer and SIWave — in particular, material and layer characteristics (e.g. height). This information is often available in the original source program (e.g. Cadence or Mentor Graphics). By specifying an input control file to the ODB++ job that contains the materials and layer information, a usable ANFv4 output file can be obtained. The ODB++ Translator uses a control file that provides stackup information to Designer and other related tools.

The Designer control file is in XML and can be created using standard third party text editors such as Notepad in Microsoft Windows or VI in Linux. The associated XML schema file, "stackup.xsd," is located in the parent Designer installation directory. The schema file can be used with third-party editors or scripting tools that check XML syntax. Specific keywords that are valid to use in the control file can be found in the "stackup.xsd" schema. You are not required to use a control file when importing OBD++ files, however, stackup dimensions and material definitions will not be defined if you do not. If you do choose to use a control file when importing ODB++ files, you can later adjust the stackup either manually or by importing the control file into the design using the stackup dialog. If you import the control file, the stackup will be modified according to rules described in Importing a Stackup.

Following is a short example of a control file. The first three lines are heading lines that are required in all control files used with the ODB++ Translator. In the following example, after the heading lines, two other sections are present: one for materials and one for layers.

<?xml version="1.0" encoding="utf-8"?>

<Stackup xmlns="http://www.ansys.com/stackup"

         schemaVersion="1.0">

  <Materials>

   <Material Name="Solder_Mask">

      <Permittivity>

        <Double>1</Double>

     </Permittivity>

  <Materials>

    <Material Name="Dielectric_Material">

      <Permittivity>

        <Double>4.7</Double>

      </Permittivity>

  <Materials>

    <Material Name="Signal_Material">

      <Conductivity>

        <Double>59880240</Double>

      </Conductivity>

     </Material>

    </Materials>

<Layers LengthUnit="mil">

      <Layer Name="DTOP" Type="dielectric" Material="Solder_Mask" Thickness="3" />

      <Layer Name="LAYER_1" Type="conductor" Material="Signal_Material" Thickness="0.7" />

      <Layer Name="D1-2" Type="dielectric" Material="Dielectric_Material" Thickness="20" />

      <Layer Name="LAYER_2" Type="conductor" Material="Signal_Material" Thickness="0.7" />

      <Layer Name="D2-3" Type="dielectric" Material="Dielectric_Material" Thickness="20" />

      <Layer Name="LAYER_3" Type="conductor" Material="Signal_Material" Thickness="0.7" />

      <Layer Name="D3-4" Type="dielectric" Material="Dielectric_Material" Thickness="20" />

      <Layer Name="LAYER_4" Type="conductor" Material="Signal_Material" Thickness="0.7" />

      <Layer Name="DBOT" Type="dielectric" Material="Solder_Mask" Thickness="3" />

    </Layers>

</Stackup>

The topics for this section include:

Using Excel to Generate an ODB++ Control File

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