The SJA1105 multi-port Ethernet switch solution is an automotive Ethernet switch built around the SJA1105 automotive Ethernet gateway chip. It supports both store-and-forward and cut-through modes for sending and receiving data, so Ethernet traffic is transmitted more securely and reliably. It also includes a conventional Ethernet chip, enabling data to be exchanged between standard Ethernet and automotive Ethernet.
Key Points
- Maximum output rate of 100MHz
- Data exchange between industrial Ethernet and automotive Ethernet
- Support for multi-port data switching
- Master/slave configuration, mode configuration, system protection, safety functions and more
Solution Overview
Based on the SJA1105 gateway chip, the design implements multi-port automotive Ethernet pass-through as well as pass-through between automotive Ethernet and industrial Ethernet. It supports a serial connection to a PC for communication and can store data in EEPROM.
Core Components
- MCU: NXP, full part number available on request
- Switch chip: SJA1105 (NXP)
- Automotive Ethernet: TJA1101 (NXP)
- Automotive Ethernet: TJA1102 (NXP)
- USB-to-TTL: Maxlinear, full part number available on request
- EEPROM: Fudan Micro, full part number available on request
- DC-DC: MPS, full part number available on request
Applications
Infotainment systems
Reference Design SJA1105 Demo
- Power input with no polarity requirement
- Multi-port Ethernet data conversion
- Debugging over a USB serial connection
- Complete hardware design reference materials
- Complete software design reference materials
Functional Block Diagram
