Overview
The SJA1105EL is a 5-port automotive Ethernet switch developed by NXP Semiconductors. This switch is designed to provide a flexible and cost-optimized solution for implementing modular in-vehicle connectivity systems. It supports various in-vehicle connectivity requirements and is compliant with key automotive standards such as Audio/Video Bridging (AVB) and other advanced automotive diagnostics.
Key Specifications
| Specification | Description |
|---|---|
| Number of Ports | 5 |
| Switching Throughput | 5 Gbps |
| Data Rates | 10, 100, 1000 Mbps |
| Interface Types | MII, RMII, RGMII |
| Package Type | LFBGA159 (12 mm x 12 mm) |
| Operating Temperature | -40°C to +105°C (Automotive Grade 2) |
| Core Voltage | 1.2 V |
| Frame Buffer | 128 kB |
| MAC Address Learning Table | 1024 entries |
| VLAN Support | 4096 VLANs |
| QoS Handling | Based on IEEE 802.1Q |
Key Features
- IEEE 802.3 compliant 5-port store and forward architecture
- Each port individually configurable for MII, RMII, and RGMII operation
- Support for AVB traffic (SR Class A, B, and C)
- Hardware support for IEEE 802.1AS and IEEE 802.1Qav
- Ingress and egress timestamping per port
- IEEE 1588v2 one-step sync forwarding in hardware
- IEEE 802.1X support for setting port reachability and disabling address learning
- Broadcast storm protection and statistics for dropped frames and buffer load
- Programmable drive strength for all interfaces and SPI at up to 25 MHz for host processor access
- IEEE 1149.1 compliant JTAG interface for TAP controller access and boundary scan
Applications
The SJA1105EL is primarily used in automotive applications, particularly in the implementation of in-vehicle networks (IVNs). It supports various automotive use cases such as:
- In-vehicle connectivity systems
- Advanced driver-assistance systems (ADAS)
- Infotainment systems
- Automotive diagnostics and monitoring
- Industrial automation and diagnostics applications
Q & A
- What is the SJA1105EL?
The SJA1105EL is a 5-port automotive Ethernet switch developed by NXP Semiconductors.
- What are the supported data rates for the SJA1105EL?
The SJA1105EL supports data rates of 10, 100, and 1000 Mbps.
- What interfaces does the SJA1105EL support?
The SJA1105EL supports MII, RMII, and RGMII interfaces.
- What is the operating temperature range of the SJA1105EL?
The operating temperature range is -40°C to +105°C (Automotive Grade 2).
- Does the SJA1105EL support Audio/Video Bridging (AVB)?
Yes, the SJA1105EL fully supports AVB and other advanced automotive diagnostics.
- What is the package type of the SJA1105EL?
The SJA1105EL comes in an LFBGA159 package (12 mm x 12 mm).
- What is the core voltage of the SJA1105EL?
The core voltage is 1.2 V.
- Does the SJA1105EL support VLANs?
Yes, it supports up to 4096 VLANs.
- What QoS handling does the SJA1105EL support?
The SJA1105EL supports QoS handling based on IEEE 802.1Q.
- Is the SJA1105EL compliant with any specific automotive standards?
Yes, it is compliant with key automotive standards such as AVB and other advanced automotive diagnostics.
