XC60 FWD L6-3.2L VIN 96 B6324S2 (2010)
MOST Network
MOST network
General
MOST (Media Oriented Systems Transport) is a standardized network communication system for multimedia applications. The MOST protocol is
optimized for fiber optic communication. This means that signals are sent as light pulses.
MOST data
The MOST protocol determines how light pulses or their absence should be interpreted. Each pulse or absent pulse is called a "bit". The number of
"bits" transmitted on the MOST network is 24.8 million per second (24.8 Mbit/s).
A bit can be:
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binary 0, i.e. no light pulse
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binary 1, i.e. light pulse.
The light pulses are transmitted in data frames. A data frame consists of different types of data. The size of a data frame is 64 bytes, which is 64 x 8 =
512 bits.
The data frame has a frequency of 48 kHz. This means that 48000 data frames are sent per second on the MOST network.
The data types which are included in a data frame sent on the MOST network are:
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control data
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synchronous data
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asynchronous data
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administrative data.
Control data
Control data is used to check and to allocate the functions to the control modules and the functions in the MOST network.
The control data message is transmitted from, for example, the infotainment control module (ICM) to another specific control module.
The control data message automatically checks if the receiver has received the signal and that the entire message has been correctly transmitted between
the transmitting and receiving control modules.
