185 | Cables and Accessories
ETAS ES800 System | User Guide
17.2 Requirements for failsafe Automotive Ethernet Operation
For failsafe operation of the Automotive Ethernet communication channel, all cus-
tomer specific installations - including cables, connectors and board adaptations -
have be compliant to:
- IEEE Std. 802.3bwTM-2015, “Amendment 1: Physical Layer Specifications
and Management Parameters for 100 Mb/s Operation over a Single Balanced
Twisted Pair Cable (100BASE-T1)”, chapters 96.7 - 96.9
- Open Alliance, “BroadR-Reach® Definitions for Communication Channel,
Version 2.0”
NOTE
To achieve an appropriate Automotive Ethernet channel performance all PCB
board and cable segments have to be optimized with regard to line impedance
matching, length matching within the differential net routing or twisted pair
cabling and on the reduction of untwisted regions. Stub segments must be
avoided for the Point-to-Point cable connection in favor of inline connectors and
shielding measures shall be considered depending on the operation environ
-
ment.
NOTE
Please contact your ETAS partner if you need to use Automotive Ethernet cables
in areas with severe interference.
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