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With further electrification of the vehicles, A global rethinking of the vehicle E/E architecture is needed
New trends in In-Vehicle Networking Architecture LIN CAN Body Satellite 1 Body Satellite 2 Body Satellite 3 Body Satellite 4 HMI Satellite Telephone Infotainment Satellite 1 Ethernet/MOST Reverse Camera Park Assist Camera Blind Spot Detection LDW Ethernet Stability Control Chassis Satellite 1 Chassis Satellite 2 FlexRay Energy Management CAN Transmission Central Switch/ Gateway Main Body Controller Infotainment Controller Main ADAS Controller Main Chassis Controller Main Engine Controller Ethernet Vehicle Diagnostic/Access Higher ECU integration and emergence of domain controller will create new challenges in terms of functional safety (ISO26262) C2X
Architectural Evolution – Ethernet in Automotive
Well known technology, Widespread knowledge, Wide availability of tools
Ethernet can handle future bandwidth requirements for multiple in-vehicle application
Unshielded twisted pair Ethernet based network significantly reduces cost
Unified Ethernet architecture eases diagnosis and maintenance
Ethernet AVB audio profiles can substitute synchronous MOST
Why Ethernet in Vehicles ?
Example: Ethernet Based High-End Infotainment Network Architecture
Ethernet AVB for Infotainment
Display USB/ IPOD Audio out NAND flash Display USB/ IPOD Audio out NAND flash Rear Seat Entertainment Switch Audio Amp Ethernet AVB MCU Comm/ Telematics MCU Digital Radio/TV MCU Ethernet AVB Nav Engine MCU Ethernet AVB Ethernet AVB Infotainment: MPU Switch GigE Media Server/ Disc Player Gateway: MCU ADAS: MPU Switch LVDS GigE MCU Ethernet AVB MCU Ethernet AVB MCU Ethernet AVB MCU Ethernet AVB MCU Ethernet AVB Cluster: MCU Head Unit Dashboard Panorama View Ethernet AVB Ethernet Ethernet Ethernet AVB Ethernet Ethernet Service & Control Service & Control SPI MCU Raw Video Service & Control Multi-Stream Audio/Video Dual-Stream Audio/Video Multi-Stream Audio/Control Car Network Peripheral Functions and Upgrade Options (Trunk) LVDS Raw Video Front-View Camera LVDS Raw Video Infotainment MPU
Example of silicon implementation Freescale MPC5668G – Dedicated Gateway MCU Build on Power Architecture