MOST control unit

• The fibre optic cable 
  It creates the optical connection between the control units and is connected to these with plug connections (optical plugs).
• The unit internal power supply
  It is supplied externally with the necessary energy using an electric plug connection. It supplies the voltages for the components of the control units.
• Transmitting and receiving unit
  It is made up of a LED and a photodiode and is also called a
  Fibre Optical Transmitter (FOT). The photodiode converts the optical signals into electric signals. The electrical signals are processed by the control units and passed on to the light-emitting diodes. The LED again translates the electrical signals into optical signals and saves them in the FOC.
• Microcontroller
  The microcontroller (CPU) contains the same intelligence as the control unit and processes the necessary signals for the control unit according to a programmed work program (as in the CAN bus).
• MOST transceiver
  This creates the connection between the FOT and the CPU. At the same time it filters the relevant data and passes it on to the CPU. All other data is given directly back to the FOT and is thereby available for other MOST control units.
• Device specific components
  Depending on the design and application purpose a control unit
  has specific components at its disposal, such as a radio tuner or media drives.