MIL-STD-1553 Physical Layer for Time-Triggered Networks

Paper #:
  • 2009-01-3147

Published:
  • 2009-11-10
Citation:
Glass, M., "MIL-STD-1553 Physical Layer for Time-Triggered Networks," SAE Technical Paper 2009-01-3147, 2009, https://doi.org/10.4271/2009-01-3147.
Author(s):
Pages:
15
Abstract:
Time Triggered networking technologies such as TTP (Time Triggered Protocol) are beginning to be used in critical aerospace applications such as flight controls. While TTP provides stringent specifications for determinism and fault tolerance, it does not define a physical layer. TTP's “de facto” physical layer, RS-485, includes shortcomings in a number of areas. These include a relatively low minimum transmitter voltage, low receiver threshold, along with a lack of specificity in a number of areas. The latter include bus signal levels, transmitter zero-crossing distortion and receiver zero-crossing tolerance, isolation method, terminal output noise, common mode and noise rejection, and input impedance. MIL-STD-1553, which has been deployed in flight and mission critical military applications for decades, defines a highly proven and robust physical layer. This paper presents MIL-STD-1553's physical layer as a candidate for use with TTP.
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