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 (instrumentation bus). A multimedia network
can also carry digital audio and video signals and graphics as well as other data services.
Advantages of the Multimedia Network
All data can be transported across a shared network. This offers the following benefits:
Additional signal wiring harnesses are eliminated.
The only addition many control units need is the power supply.
As each participant (= each control unit) has access to all the
data, cost-intensive assemblies for signal distribution can be
eliminated.
Different data formats also have different requirements for transmission regarding both
mechanism (synchronous or asynchronous data) and the required band-width
(baud or bits/second). The MOST format is able to meet these requirements to a satisfac-
tory extent.
Audio
Video
RGB
Data Services
Control
KT-9387
Information transmitted on MOST network
