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.2
All bytes are framed by a recessive start bit at the beginning and a dominant stop bit at the end.
Eclipse 500 Avionics Architecture diagram in "Eclipse 500 Avionics" (PDF). Smartcockpit.com. December 20, 2007. Archived from the original (PDF) on February 15, 2016. Retrieved 2016-02-10. https://web.archive.org/web/20160215182621/http://www.smartcockpit.com/download.php?path=docs%2F&file=EA500-Avionics.pdf ↩
Cena, G.; Valenzano, A. (2004). "Performance analysis of Byteflight networks". Proceedings. WFCS 2004 - 2004 IEEE International Workshop on Factory Communication Systems, September 22nd - 24th, 2004, Vienna University of Technology, Vienna, Austria. Piscataway, NJ: IEEE. pp. 157–166. doi:10.1109/WFCS.2004.1377701. ISBN 0-7803-8734-1. 0-7803-8734-1 ↩