Data Transport
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MOST currently offers a band-width of 22.5 Mbits/s. In the next generation, the bandwidth will be increased to 50 and then later to 150 Mbits/s (as of approx. 2002).
In order to meet the different requirements of the applications regarding data transport, each MOST message is divided into three parts:
- Control data
- Asynchronous data: e.g. navigation system, arrow representation
- Synchronous data: e.g. audio, video signals
The control data controls the functions and devices in the network. The information can be compared to CAN bus data.
The control data has a band-width of 700 Kbit/s. That corresponds to around 2700 messages per second.
For the data transmission of synchronous and/or asynchronous data, there is a total of 60 bytes. The limit is variable: e.g. 20 bytes of synchronous data and 40 bytes of asynchronous data.