MOST150 Enables New Features
Dr. Wolfgang Bott
MOST Cooperation
Technical Coordinator
© 2015 MOST Cooperation. All Rights Reserved.
Slide 1
Agenda
MOST150
–
–
–
–
–
Multi-channel approach
High streaming bandwidth
Hard Real-time and low latency requirements
Functional system model and safety aspects
Robustness and maturity
New Features
– New Data Types and FCat Exchange Format
– Multiport Network Interface Controller (NIC)
– Remote Controlled Node
Summary
© 2015 MOST Cooperation. All Rights Reserved.
Slide 2
MOST150
Bandwidth, Ethernet and Low Cost Video
150 Mbps bandwidth
Simple migration from previous MOST generations
Transmission over legacy POF/LED optical or electrical physical layer
Legacy MOST channels: control, synchronous, packet
New channels
– Ethernet
Supports legacy Ethernet packets
Standard TCP/IP stacks useable without change
– Isochronous
Support of un-synchronized streams like MPEG video
Ultra-low and deterministic latency
© 2015 MOST Cooperation. All Rights Reserved.
Slide 3
Multi-channel Approach
Supports parallel usage of control data and streaming data through
one network
Also, packet data can be used in parallel;
IP Data according to IEEE 802.3
automotive-ready Ethernet channel
Different channels allow different levels of data protection
© 2015 MOST Cooperation. All Rights Reserved.
Slide 4
Hard real-time, determinism and low latency
MOST allows for:
Hard real-time
Determinism
Low latency
– Severe jitter restrictions in a temperature range
from -40°C to 95°C (or even 105°C)
MOST is characterized by:
Fair arbitration with deterministic worst case access time
inherent synchronicity on physical layer
clear distinction between transfer jitter (relevant on system level) and
alignment jitter (only relevant on the single link level) leads to robust
network system design
testable specification limits that can be checked during compliance
verification
© 2015 MOST Cooperation. All Rights Reserved.
Slide 5
MOST Framework
Designed for optimal synchronous and isochronous streaming
Nearly no overhead for administrative communication
Functional and hierarchical system model
Standardization of API through Function Block framework
Functional addressing
Free partitioning of functionality to real devices
Service Discovery
Notification
Flexibly scalable automotive-ready Ethernet channel
according to IEEE 802.3
© 2015 MOST Cooperation. All Rights Reserved.
Slide 6
Safety Aspects
Investigation of safety measures according to IEC 61508 and ISO 26262
Approach: Safety Layer on Application Level.
Results:
– Safety Measures defined, e.g.:
Timeout detection
CRC
Sequence counter
– Co-existence of safety and non-safety nodes in the same network
– Reaches up to Safety Integrity Level SIL 3 / ASIL D
– MOST is ready for cross-domain applications (such as ADAS)
Monitor
Safety Layer
Applic. Layer Service
Application Layer
Network Layer
© 2015 MOST Cooperation. All Rights Reserved.
Safety stream frames
Virtual/safe
communication
Acknowledgements
Real communication
MOST telegrams
Slide 7
Camera
Safety Layer
Applic. Layer Service
Application Layer
Network Layer
Robustness and Maturity
More than 190 car models on the road
Third generation rolls off the line smoothly since 2012
Complete system solution approach
– Inherent synchronicity and determinism on the network level lowers the
requirements on the component level and saves resources.
– Standardization of MOST provides reuse of the function blocks, which are sets
of standardized commands that allow for synchronized message and event
flow.
– MOST provides an IP (intellectual property) pool with royalty-free crosslicensing among the members of the MOST Cooperation. It allows for a
straightforward, easy grant of license which is based on compliance testing.
This model as well as the technology is attractive for both premium and
volume carmakers.
– Established compliance processes with accredited MOST Compliance Test
Houses according to ISO 17025 leads to pre-tested components.
© 2015 MOST Cooperation. All Rights Reserved.
Slide 8
Agenda
MOST150
–
–
–
–
–
Multi-channel approach
High streaming bandwidth
Hard Real-time and low latency requirements
Functional system model and safety aspects
Robustness and maturity
New Features
– New Data Types and FCat Exchange Format
– Multiport Network Interface Controller (NIC)
– Remote Controlled Node
Summary
© 2015 MOST Cooperation. All Rights Reserved.
Slide 9
New data types – Changes
Size
Changed in MOST Spec. 3.1 New in MOST Spec. 3.1
2 Bytes
4 Bytes
8 Bytes
• Enum
• Enum
• Enum
•
•
•
•
•
•
•
Other Size
© 2015 MOST Cooperation. All Rights Reserved.
Slide 10
Float
Double
Unsigned Long Long
Signed Long Long
Length-Coded String
Array Type
Record Type
New data types - Example
Contacts.Status(AccessPath, Content)
Contacts.Status(< 0x00000004,
0x00000002,
0x00000003,
0x00000002,
0x00000001>,
<0x01, 0x00000008, “Business”>)
© 2015 MOST Cooperation. All Rights Reserved.
Slide 11
FCat Schema 3.1
MOST Editor
MOST
Specification
FCat
Schema
Function
Catalog
(XML)
HTML
Conversion
XML Function Catalog
format definition
Function sharing
Data element
sharing
© 2015 MOST Cooperation. All Rights Reserved.
Slide 12
Function
Catalog
(HTML)
FBlock
Specification
(PDF)
MOST Editor
© 2015 MOST Cooperation. All Rights Reserved.
Slide 13
Multiport Network Interface Controller
enables
Concatenation of streaming bandwidth
Determinism and low latency of high bandwidth of 8 x 150 Mbit/s = 1,2 Gbit/s
Flexible and dynamic topologies
Partial networks
New features such as round view monitor and slim displays
Redundancy
MOST Spec Rev. 3.1 creates the prerequisites for a MOST150
Multiport Network Interface Controller (NIC)
© 2015 MOST Cooperation. All Rights Reserved.
Slide 14
Multiport NIC Routing
Control channel
Packet channel
HOST
PCIe Interface
Multiport
NIC
© 2015 MOST Cooperation. All Rights Reserved.
Slide 15
Multiport NIC Routing
Control channel
Packet channel
HOST
PCIe Interface
Multiport
NIC
© 2015 MOST Cooperation. All Rights Reserved.
Slide 16
Remote Control Extension
Remote Control Extension is an add-on to FBlock 0x00
Remote Control Extension can manage read and write access to other
on-board slave devices (I2C reads and writes are remotely handled through
the MOST control channel.)
A Remote Controlled Node is remotely controlled through a “proxy node”
The proxy node presents to the MOST network an FBlock that corresponds
to the functionality of the Remote Controlled Node
Controller
Amplifier FBlock Shadow
Proxy Node
Remote Controlled Node
(contains Amplifier Functionality)
Amplifier FBlock
Remote Controlled
IIC FBlock Shadow
Remote Controlled
NIC FBlock
MOST Spec Rev. 3.1 creates the prerequisites for Remote Controlled Nodes
© 2015 MOST Cooperation. All Rights Reserved.
Slide 17
Remote Controlled Node
MOST150 cPhy Rear Seat Entertainment with Low-Cost Slim Display
Full Duplex + Power
No Microcontroller
Features:
■ Multi-source video player remotely controls processor-less slim displays
„Remote Controlled“
■ Multi-port Network Interface enables star topology (up to 150 Mbps bandwidth at each port)
Benefits:
■ Coaxial PHY technology lowers cost by providing full duplex and power-over-coax solutions
■ Excellent Quality of Service
© 2015 MOST Cooperation. All Rights Reserved.
Slide 18
Multi-Port NIC - Central Camera Control
Remote
Control
Cameras
Dig. Video
GPIO
Image sensor I2C™
Video Enc
MOST I/F
Coax PHY
MOST® I/F
Remote
Control
Dig. Video
GPIO I2C
Image sensor
Camera ECU
Video Enc
MOST I/F
Coax PHY
MOST I/F
Remote
Control
Dig. Video
GPIO I2C
Image sensor
Video Enc
MOST I/F
Coax PHY
GPIO I2C
Image sensor
Video Dec
Cam Control
Top View
Multi-Port
MOST I/F
FPGA / SoC
Remote
Control
MOST I/F
Remote
Control
Dig. Video
4/8 Ports
MOST I/F
Coax PHY
Video Enc
MOST I/F
Coax PHY
•
•
•
MOST I/F
© 2015 MOST Cooperation. All Rights Reserved.
Slide 19
Make use of Remote Control Feature
Centralized camera control
Just one software instance needs
to be deployed and maintained
Multi-Port NIC - Bandwidth Considerations
Up to
150 Mbps
Cameras
Dig. Video
GPIO
Image sensor I2C™
Up to 8 links
Video Enc
MOST I/F
Coax PHY
Video streams
MOST® I/F
Up to
150 Mbps
Dig. Video
GPIO I2C
Image sensor
Camera ECU
Video Enc
MOST I/F
Coax PHY
MOST I/F
Up to
150 Mbps
Dig. Video
GPIO I2C
Image sensor
Video Enc
MOST I/F
Coax PHY
MOST I/F
GPIO I2C
Image sensor
Video Enc
MOST I/F
Coax PHY
•
•
MOST I/F
© 2015 MOST Cooperation. All Rights Reserved.
Video Dec
Cam Control
Top View
Multi-Port
MOST I/F
FPGA / SoC
Up to
8 x150 Mbps
1.2 Gbps
Up to
150 Mbps
Dig. Video
4/8 Ports
MOST I/F
Coax PHY
Slide 20
Full MOST150 streaming bandwidth
can be independently used for each
camera link
Up to 1.2 Gbps total streaming
bandwidth to the SoC
Agenda
MOST150
–
–
–
–
–
Multi-channel approach
High streaming bandwidth
Hard Real-time and low latency requirements
Functional system model and safety aspects
Robustness and maturity
New Features
– New Data Types and FCat Exchange Format
– Multiport Network Interface Controller (NIC)
– Remote Controlled Node
Summary
© 2015 MOST Cooperation. All Rights Reserved.
Slide 21
Summary
• Multi-channel network approach
•
Control, streaming and packet data
in parallel over the same network link
• Remote Control feature
•
Centralized camera control
• Flexible architecture
•
Star and ring topologies
• Streaming nature of MOST® Technology
•
Real-time streaming with ultra-low latency and
highest quality of service
• Up to 150 Mbit/s can be allocated for each camera’s stream
•
Routing of up to 1.2 Gbps of video data into the central microprocessor
.
© 2015 MOST Cooperation. All Rights Reserved.
Slide 22
MOST150 Enables New Features
Thank you for
your attention!
© 2015 MOST Cooperation. All Rights Reserved.
Slide 23