Automotive Ethernet Standard
Based on established ethernet standards, adapted for automotive
- Unshielded single twisted pair cabling designed for automotive environment and lower cost
- 100Mbps and 1Gbps speed: Higher Bandwidth compared to CAN FD (15Mbps), FlexRay (10Mbps), MoST (150Mbps)
- Can reuse existing Application Layer Ethernet stack
- Uses PAM3 signaling to meet EMI/EMC requirement
The evolution
| CAN-FD | FlexRay | 100BASE-T1P802.3bwTM | 1000BASE-T1802.3bpTM | |
|---|---|---|---|---|
| Datarate | 15Mbps | 10Mbps | 100Mbps | 1000Mbps |
| Symbol Rate | NA | NA | 66.66MHz | 750MHz |
| Signal | Single ended | Single ended | PAM3 | PAM3 |
| Modulation | NA | NA | 4B/3B | 80B/81B |
| Length | 100m@0.5Mbps | 24m | 15m(Copper) | 15m(Copper) |
| Cable | 2 Wire | 2 Wire | Twisted pair (Bidirectional) | Twisted pair (Bidirectional) |
Multigigabit Ethernet which would address need beyond 1G is at spec development stage