• Automotive
• ASIL-A
• Ethernet Switch
• 100BASE-T1
• VLAN
• CAN
• CAN FD
• LIN
• RS-232
• SPC58
• AVB
• Audio-Video Bridging
• IEEE 802.1BA
• TSN
• Time-Sensitive Networking
• IEEE 802.1AS
• TTEthernet
• Time-Triggered Ethernet
• AVTP
• AVB Transport Protocol
• IEEE 1722-2016
• CAN over AVTP
• LIN over AVTP
• PTP
• Precision Time Protocol
• 12V
• IP5K0
• Architecture Design
• Confluence
• Requirements Yogi
• Schematics Design
• PCB Design
• KiCad
• Bring-Up
• Firmware Development
• MISRA C
• C99
• AUTOSAR
• TCP/IP
• Python

Overview

The transition to Zonal Architecture in automotive design significantly reduces vehicle wiring, replacing hundreds of meters of cables with a single twisted pair. This Zonal Gateway ECU integrates a 10-port managed AVB/TSN Ethernet switch with a robust CAN/LIN/RS-232 to AVB/TSN gateway, enabling efficient time-sensitive data transmission across vehicle domains.

This device had been created in an attempt to reduce vehicle wiring even more by replacing wire harnesses to Flex PCB and utilizing edge-connectors instead of classical automotive connectors to optimize overall vehicle assembly time.

Key Features

• Managed Ethernet switch with support for Audio-Video Bridging (AVB) and Time-Sensitive Networking (TSN).
• Configurable VLAN segregation on all ethernet ports
• 10x single-pair 100BASE-T1 (100 Mbit/s automotive Ethernet)
• 8x CAN/CAN-FD ports (up to 5 Mbit/s)
• 1x LIN interface
• 1x RS-232 interface
• ASIL-A qualification (ISO 26262)
• 12V vehicle power supply
• Fully operational in -40 … +85 °C ambient temperatures
• Low Power features:
  • CAN/CAN-FD partitioned networking with wake-up only on specific CAN messages (i.e., directly addressed) on CAN1 port
  • LIN wake-up capability
  • Open Alliance TC10 Sleep/Wake-Up support on all automotive Ethernet ports

My contribution to the project

1. General Responsibilities

• Requirements engineering using Requirements Yogi in Confluence
• Developing the solution architecture
• Developing the Hardware-Software Interface (HSI)
• Ensuring compliance with ISO 26262 and achieving the ASIL-A target
• Leading DFMEA analysis

2. Hardware Development

• Schematics and PCB design in KiCad
• Device Bring-Up
• Validation and verification workflows development

3. Software Development

• Developing the firmware using company-wide components
• Developing CAN messaging scheme for device control and diagnostics
• Implementing MISRA-C and AUTOSAR compatible modules:
  • Peripheral drivers:
    • Ethernet switch chip
    • Automotive Ethernet transceiver
    • Fast Ethernet transceiver
  • Lightweight TCP/IP stack
  • AVB protocols support (AVTP, PTP, overall state machine)
  • CAN/LIN/RS232 to AVTP Gateway
  • Device diagnostics via CAN and Ethernet
  • Ethernet Switch, VLAN and AVTP gateway management
• Contributing the CAN/LIN/RS232 over AVTP parser to the Wireshark project.
• Developing Python scripts and GUI tools for bring-up, validation, and verification

Product Images