BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual

BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual 7 SERIES LONG 2003 E66 BMW BMW https://www.carmanualsonline.info/img/1/5447/w960_5447-0.png BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual

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BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual Initial Print Date:03/02Revision Date:08/02
Subject Page
MOST Technology ..................................................................................  3
MOST Multimedia Network .................

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BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual 2
MOST Bus Diagnosis
MOST Bus Diagnosis
Model: E65 - E66
Production Date: Start of Production 
Objectives:
After completing this module you should be able to:
• Understand the reason for optical bus

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BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual 3
MOST Bus Diagnosis
System Overview
MOST Technology
Until very recently, only very few entertainment-related control units were networked.  In the
course of the development, the number of components

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BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual 4
MOST Bus Diagnosis
Principle of a Multimedia Network
An important feature of a multimedia network is that it transports not only control data and
sensor data, e.g. like the CAN bus and I bus (instru

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BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual 5
MOST Bus Diagnosis
Functional Description
Data Transport
MOST currently offers a band-width of 22.5 Mbits/s . In the next generation, the band-width
will be increased to 50 and then later to 150 Mbi

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BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual 6
MOST Bus Diagnosis
Optical Bus
The MOST bus is a plastic optical waveguide.  The MOST bus is coded in green in the E65
(Repair cables are black in color).  The light wavelength is 650 nm (red light)

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BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual 7
MOST Bus Diagnosis
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 networ

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BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual 8
MOST Bus Diagnosis
Interfaces
The following contains a brief summary of the tasks of the connected control units in the
MOST framework:
Control Display
The Control Display is the system master of al

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BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual 9
MOST Bus Diagnosis
Audio Master
As audio master, the ASK has the task to collect and process all the audio signals of the
vehicle and to distribute them to their destinations.
The ASK controls all t

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BMW 7 SERIES LONG 2003 E66 MOST Bus Diagnosis Workshop Manual 10
MOST Bus Diagnosis
CD Changer Audio (CDC)
The CD changer is a slave control unit in the MOST framework.
Navigation System (NAV 01)
The control unit of the navigation system has controller tasks and
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