Hey guys I have accidentally found the hole circuitry board layout schematics. Which means that we know all the connections leading to control pins of the Siemens SAB 80 C 535 microcontroller. It means that there is a chance to reroute the Siemens SAB 80c 535 pin connections to Tiva Launchpad.
Here is the Launchpad technical data, it has more control pins than the Siemens SAB. 
