Byteflight

Byteflight is an automotive databus created by BMW and partners Motorola, Elmos Semiconductor and Infineon to address the need for a modernized safety-critical, fault tolerant means of electronic communication between automotive components. It is a message-oriented protocol. As a predecessor to FlexRay, byteflight uses a hybrid synchronous/asynchronous TDMA based means of data transfer to circumvent deficiencies associated with pure event-triggered databuses. It was first introduced in 2001 on the BMW 7 Series (E65). Eclipse 500 jet aeroplanes use Byteflight to connect the avionics displays.

Byteflight is an automotive databus created by BMW and partners Motorola, Elmos Semiconductor and Infineon to address the need for a modernized safety-critical, fault tolerant means of electronic communication between automotive components. It is a message-oriented protocol. As a predecessor to FlexRay, byteflight uses a hybrid synchronous/asynchronous TDMA based means of data transfer to circumvent deficiencies associated with pure event-triggered databuses. It was first introduced in 2001 on the BMW 7 Series (E65). Eclipse 500 jet aeroplanes use Byteflight to connect the avionics displays. ==Data frame== In Byteflight terminology, a data frame is called a "telegraph". A telegraph starts with a start sequence containing six dominant bits. This start sequence is followed by a one byte message identifier. This is followed by a length field indicating the length in bytes of the transmitted data. The telegraph ends with a 15 bit CRC value encoded in two bytes leaving the LSB unused. All bytes are framed by a recessive start bit at the beginning and a dominant stop bit at the end. ==References== ==External links== byteflight.com (archived)

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