A Leading Provider of Smart, Connected and Secure Embedded Control Solutions
Presented by Martin Miller – June 2021
Vector Automotive Ethernet Symposium 2021
Agenda
• Microchip Introduction
• 10BASE-T1S Technology
• Microchip 10BASE-T1S Products
Microchip Delivers
• Expertise in Networking• Proven Track Record
• Leverage Multi-faceted Technologies• Total System Solutions
Microchip Market Expertise and Commitment
• Comprehensive Ethernet portfolioPHYs, Switches, Bridges, Controllers, SoC
• ‘No end-of-life’ approach
Industrial Automotive
Ethernet Scales from Low to High Bandwidth
• Common network software stacks
• Physical layer independent
10BASE-T1S TechnologySpecified in IEEE Std 802.3cg-2019™
• 10 Mbit/s
• Half-duplex
• Flexible topology• Multidrop bus line
• Point-to-point
• Single balanced pair of conductors• Unshielded twisted pair cables
• PCB lanes/backplane
PLCAOptimized Data Throughput on a Bus Line• Goals
• Full bandwidth utilization• Reduce latency
• Principle• Avoid physical collisions on the medium by organizing the media access • Called Physical Layer Collision Avoidance (PLCA)
• How it is done• Only the PHY that owns a transmit opportunity is allowed to send data• Transmit opportunities are given in a round robin manner• A new cycle of transmit opportunities is started when the PLCA coordinator node sends a BEACON• Works on top of Carrier Sense Multiple Access/Collision Detection (CSMA/CD)
0…0 0 1 N 0
PLCA Bus Cycle
t
0 1 2 3 …
10 Mbps shared
SPE is Not Just for Automotive Networking
10BASE-T1S Application Examples• Sensor• Ultrasonic
• Radar
• Microphones
• Powertrain
• Actuator• Light
• Speaker
• Electric Motor
10
• Ultrasonic sensor units• Radar sensor units• Front radar
10BASE-T1S Applications• Sensor• Ultrasonic
• Radar
• Microphones
• Powertrain
• Actuator• Light
• Speaker
• Electric Motor
11
• Handsfree• Emergency Call• 360o environment sensing
10BASE-T1S Applications• Sensor• Ultrasonic
• Radar
• Microphones
• Powertrain
• Actuator• Light
• Speaker
• Electric Motor
12
• Position• Speed• Pressure• Temperature• Etc.
10BASE-T1S Applications• Sensor• Ultrasonic
• Radar
• Microphones
• Powertrain
• Actuator• Light
• Speaker
• Electric Motor
13
• Front-/Backlight• Indicator• Ambient Lighting
10BASE-T1S Applications• Sensor• Ultrasonic
• Radar
• Microphones
• Powertrain
• Actuator• Light
• Speaker
• Electric Motor
14
• Door Speaker• Subwoofer• eSound• Emergency Call Unit• Etc.
10BASE-T1S Applications• Sensor• Ultrasonic
• Radar
• Microphones
• Powertrain
• Actuator• Light
• Speaker
• Electric Motor
15
• Windows• Mirrors• Door-opener• Pumps• Windshield wiper
10BASE-T1S in Zone Architecture• Example Door Zone• Window Lifter
• Mirror Control
• Speakers
• Lock
• Ultrasonic
• Ambient Light
• Indicator Light
➢Multiple applications on a single cable!
16
10BASE-T1S Enabling Zone Architecture
• Door
• Bumper
• Seat
• Roof
• Engine Compartment
• Battery
• Etc.
17
10BASE-T1S Product Details
10BASE-T1S PHYEvaluation Boards and MPLAB Harmony
• 10BASE-T1S PHY RMII and MII Evaluation Boards• Fits to many Microchip MCU boards• Small form factor• Includes the Bus Interface Network (analog front-end)
• 10BASE-T1S PHY USB Evaluation Board• Makes every USB host a potential 10BASE-T1S node• Drivers for Linux & Windows
• MPLAB Harmony v3 Development Framework• Integration into development framework for Microchip
microcontrollers and microprocessors
Implementation Example10BASE-T1S Weather Station
• SAM E54 • Temperature, Pressure,
Humidity Sensor
• 10BASE-T1S PHY RMII
• Raspberry PI• Display
• 10BASE-T1S PHY USB
Q&A
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