Most Data Frame

Fig 1: Identifying MOST Data Frame

Courtesy of VOLVO CARS CORPORATION

A data frame consists of different parts. This contains for example: 

• control data
• asynchronous data
• synchronous data
• administrative data.

A data frame on the MOST network is 64 bytes. The data frame consists of the following:

1. synchronization of the clock on the MOST network, i. e. the frequency at which data is transmitted so that the data is sent at the correct intervals
2. administrative data, indicates the size of the asynchronous and synchronous data
3. synchronous data
4. asynchronous data
5. control data
6. administrative data.

16 data frames are required to form a block. One block is the minimum size of a MOST message.