Control Unit/Control Unit Connection
WARNING: This page does not describe the selected car, but rather 59 other vehicles, including the 2009 BMW M5, 2009 BMW 650i, 2009 BMW 550i, 2008 BMW M5, and 2008 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.
The MOST ring is composed of optical point-to-point connections between 2 control units. Each control unit has a network interface. The network interface consists of:
- An opto-electrical converter (optical waveguide receiver, already mentioned).
- An opto-electrical converter (optical waveguide transmitter, already mentioned).
- A MOST transceiver (interface between the optical waveguide receiver/transmitter and the electronic network driver).
- A network driver, the so-called NetServices.
The NetServices run on a microcontroller (main computer in the control unit)
On the application level, a control unit in the MOST framework contains stand-alone function units, so-called function blocks. Examples of function blocks include:
- Tuners
- Amplifiers
- CD players
A control unit can contain several function blocks at one time, e.g. the AVT contains the functions:
- Antenna
- Amplifier
- Tuner