BMW E65 User Manual download pdf (Page 37)

E65 Bus Systems

Control Unit/Control Unit Connection

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 func-

tion 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

MOST Fiber Optic cable

Example

SVS

Navigation

Network interface

NetServices SW

Most

transceiver

Most

transceiver

Optical

receiver

Optical

receiver

Optical

transmitter

Optical

transmitter

KT-9397

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BMW E65 User Manual Page 37