Evolution of Automotive In-Vehicle Networking

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Evolution of Automotive In-Vehicle Networking
Marc Osajda Global Automotive Segment
MarketingFreescale Semiconductor
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In-Vehicle Networking complexity
NOX
Blower
1996 Typical Vehicle 6 ECUs
2009 High-End Vehicle gt 70 ECUs
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Vehicle E/E Architecture Challenges

• Too complex, too much energy consumption
• Too many different networks
• Too many ECUs
• Too many cables
• Too many connectors
• Too much weight
• Too many too many

With further electrification of the vehicles, A
global rethinking of the vehicle E/E
architecture is needed
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New trends in In-Vehicle Networking Architecture
C2X
Central Switch/ Gateway
Vehicle Diagnostic/Access
Ethernet
Main Body Controller
Infotainment Controller
Main ADAS Controller
Main Chassis Controller
Main Engine Controller
HMI Satellite
Stability Control
Body Satellite 1
Reverse Camera
Transmission
Telephone
Chassis Satellite 1
Body Satellite 2
Park Assist Camera
Energy Management
Infotainment Satellite 1
Chassis Satellite 2
Body Satellite 3
Blind Spot Detection
CAN
FlexRay
Body Satellite 4
Ethernet/MOST
LDW
Ethernet
LIN
Higher ECU integration and emergenceof domain
controller will create new challenges in terms of
functional safety (ISO26262)
CAN
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Architectural Evolution Ethernet in Automotive
Why Ethernet in Vehicles ?

• 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

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Example Ethernet Based High-End Infotainment
Network Architecture

• Ethernet AVB for Infotainment

Rear Seat Entertainment
Peripheral Functions and Upgrade Options (Trunk)
NAND flash
NAND flash
USB/IPOD
USB/IPOD
Comm/Telematics
Nav Engine
MCU
MCU
EthernetAVB
EthernetAVB
Audio out
Audio out
Infotainment MPU
Switch
Audio Amp
DigitalRadio/TV
MCU
MCU
Display
Display
EthernetAVB
EthernetAVB
Ethernet AVB
Ethernet
LVDS
Dual-Stream Audio/Video
Multi-Stream Audio/Control
Raw Video
Gateway MCU
Ethernet
CarNetwork
Media Server/Disc Player
Ethernet AVB
Service Control
Multi-Stream Audio/Video
MCU
Switch
Ethernet
Ethernet
MCU
EthernetAVB
Service Control
Service Control
SPI
MCU
GigE
ClusterMCU
EthernetAVB
InfotainmentMPU
ADASMPU
Switch
LVDS
MCU
GigE
EthernetAVB
Raw Video
Dashboard
MCU
Head Unit
EthernetAVB
MCU
Panorama View
Front-ViewCamera
LVDS
EthernetAVB
Raw Video
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Example of silicon implementationFreescale
MPC5668G Dedicated Gateway MCU
Build on Power Architecture
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Functional Safety
Objective of the ISO26262 Standard

• Provides and automotive specific risk based
  approach for determining risk classes (ASIL)
• Specify the necessary safety requirements for
  achieving an acceptable residual risk
• Provides confirmation to ensure a sufficient
  level of safety is being achieved

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Functional Safety / ISO26262

• Functional safety is a key paradigm of next
  generation electronic vehicle systems
• Safety standards are becoming the key
  enablerfor the design of all new electronic
  application in the vehicle and associated
  semiconductor development

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Freescale No. 1 in Automotive Semiconductors

• Freescale Leadership in Driving Standards
• First semiconductor supplier to join the AUTOSAR
  development partnership
• Co-founded FlexRayTM Consortium with BMW,
  DaimlerChrysler and Philips
• Founding member of Local Interconnect Network LIN
  Consortium
• Founding member of the DSI protocol, and
  associated member of the PSI5 consortium (Airbag)
• Member of the GENIVI Consortium (Infotainment)
• Active member of JASPAR supporting Japanese
  automotive electronics standardization