<fabric_key>
  <region id="0">
    <key id="0" name="sb" value="0"/>
    <key id="2" name="cb" value="10"/>
    <key id="1" name="sb" value="7"/>
    <key id="3" name="clb" value="53"/>
    <key id="4" name="bram" value="32"/>
  </region>
</fabric_key>