BMW G12 2015 Technical Training Manual page 15

G12￿Voltage￿Supply￿and￿Bus￿Systems
1.￿Bus￿Systems
The￿OSI￿model￿for￿the￿2-wire￿OABR￿Ethernet￿looks￿as￿follows:
OSI￿model
Index
1
2
3
4
5
6
Explanation
Applications￿(user￿applications￿and￿processes)
Transport￿(package￿security,￿encryption)
Network￿(package￿delivery,￿routing)
Link￿=￿connection￿setup,￿interface￿(device￿driver,￿hardware)
Physical￿layer￿for￿data￿transfer￿with￿2x100￿MBit/s
Additional￿modules￿defined￿for￿the￿OABR￿Ethernet
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