==== ISDB_CA_startup_descriptor

Defined by ARIB in <<ARIB-B61>>.

[source,xml]
----
<ISDB_CA_startup_descriptor
    CA_system_ID="uint16, required"
    CA_program_ID="uint13, required"
    load_indicator="uint7, required"
    second_CA_program_ID="uint13, optional"
    second_load_indicator="uint7, optional">

  <!-- One per exclusion_CA_program_ID -->
  <exclusion CA_program_ID="uint13, required"/>

  <load_security_info>
    Hexadecimal content
  </load_security_info>

  <private_data>
    Hexadecimal content
  </private_data>

</ISDB_CA_startup_descriptor>
----

The attributes `second_CA_program_ID` and `second_load_indicator` must be both present or both absent.
