 to target's TDI pin. </td><td>complexType </td><td>0..*  </td></tr>
<tr>
<td><a class="el" href="sdf_pg.html#sdf_element_topology">/system_description/platform/topology</a> </td><td>Describes the system topology </td><td>complexType </td><td>0..1  </td></tr>
<tr>
<td><a class="el" href="sdf_pg.html#sdf_element_clusters">/system_description/platform/clusters</a> </td><td>Describes the cluster arrangement </td><td>complexType </td><td>0..1  </td></tr>
</table>
<p>&#160;</p>
<hr/>
<h1><a class="anchor" id="sd