The Commercial Standard Digital Bus (CSDB) is a
multidrop bus, formerly known as the Collins Standard Digital Bus. The maximum speed is 50 kbit/s.
Most civilian aircraft use one of 3 serial buses: the Commercial Standard Digital Bus (CSDB),
[
Cary Spitzer.
"The Avionics Handbook".
Lee Harrison]
Chapter 3: Commercial Standard Digital Bus
ARINC 429
ARINC 429, "Mark33 Digital Information Transfer System (DITS)," is also known as the Aeronautical Radio INC. (ARINC) technical standard for the predominant avionics data bus used on most higher-end commercial and transport aircraft. It defines the ...
, or
AS-15531.
The Commercial Standard Digital Bus is a two-wire
asynchronous
Asynchrony is the state of not being in synchronization.
Asynchrony or asynchronous may refer to:
Electronics and computing
* Asynchrony (computer programming), the occurrence of events independent of the main program flow, and ways to deal wit ...
broadcast
data transmission
Data transmission and data reception or, more broadly, data communication or digital communications is the transfer and reception of data in the form of a digital bitstream or a digitized analog signal transmitted over a point-to-point o ...
bus. Data is transmitted over an interconnecting cable by devices that comply with
Electronic Industries Association (EIA)
RS-422A. The physical layer is
EIA-422.
Messages on the CSDB consist of one address byte followed by any number of data bytes.
["Commercial Standard Communications Bus"]
References
Avionics
Serial buses
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