CSCB [Commercial Standard Communications Bus].
The Commercial Standard Digital Bus [CSDB] interface operates on a bus frequency of 12.5kbps or 50kbps. The electrical standard for data transmission complies with RS422 in part.
There are changes however; Line-to-Line, and Line-to-Ground receiver capacitance is defined as 600pF. While the transmitter load capacity is set at 12,000pF, allowing for between 1 and 10 loads.
The mechanical interface uses a twisted shielded pair cable with a maximum cable length of 50 meters [unterminated].
Data is transmitted in Non Return to Zero [NRZ]. A positive line 'B' indicates a Logic "0", while a positive line 'A' indicates a Logic "1"
A Logic "0" defines a Start Bit, while a Logic "1" defines a Stop Bit. A message block consists of 1 address byte followed by any number of data bytes.
The output voltage levels range between +3.0v to 5.0 Vdc for transmitting signals.
The receive voltage levels range between +2.0v and 6.0 Vdc.
CSDB Release date 1983
GAMA General Aviation Manufacturers Association
Aeroflex {CSDB Databus Analyzers}
Ballard Technology {CSDB; Ethernet, PCI, cPCI}
Max Technologies {CSDB 8MHz single-size Industry Pack}
Rockwell Collins {CSDB Interface Adapter, CSDB to ARINC 429 and ARINC 429 to CSDB}
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ASCB Avionics Standard Communications Bus. A high-speed, bi-directional digital data bus
Engineering Design Key words: Avionic Buses, Bus Standard, Interface Standard Data Bus, Military Specification, MIL Spec, Interface, IC, Physical Interface, Description, Physical Interface, ARINC, MIL, Military, Defense, US, NATO, STANAG, ATR, Air, Aerospace, Aviation, Avionics, Aeronautical, Aircraft
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