SAE AS5643/3

Annotation of standard text SAE AS5643/3 :

This SAE Aerospace Standard (AS) establishes guidelines for enhancement to IEEE 1394-2008 Beta (formerly IEEE 1394b) PHYsical (PHY) layer. It encompasses enhancements to the IEEE 1394-2008 Beta PHY to reduce port connection times and increase port connection reliability.

Therefore, this document contains extensions/restrictions to “off-the-shelf” IEEE 1394 standards and assumes that the reader already has a working knowledge of IEEE 1394.

The enhancements covered in this document include:

Detect loss of descrambler synchronization


Fast-ReTrain (FRT)


Fast Power-on Re-connect (FPR)


Fast Connection Tone Debounce (FTD)


Programmable invalidCount


Bus Reset Cause


This document does not identify specific environmental requirements (electromagnetic compatibility, temperature, vibration, etc.); such requirements will be vehicle-specific and even LRU-specific. One should refer to the appropriate sections of MIL-STD-461E for their particular LRU and utilize handbooks such as MIL-HDBK-454A and MIL-HDBK-5400 for guidance.

This document is referred to as a “slash sheet” and accompanies the AS5643B base standard.

SUBFILE: Aerospace
TYPE OF DOCUMENT: Aerospace Standard