Overview
The SJA1105SELY is an IEEE 802.3-compliant 5-port automotive Ethernet switch produced by NXP USA Inc. This device is designed to meet the stringent requirements of automotive networking, offering advanced features such as Audio Video Bridging (AVB) and Time-Sensitive Networking (TSN) support. It is particularly suited for applications in automotive gateway systems, body domain controllers, and interconnecting multiple Electronic Control Units (ECUs) in a daisy chain configuration.
Key Specifications
| Specification | Details |
|---|---|
| Number of Ports | 5 |
| Port Configuration | Individually configurable for MII, RMII, and RGMII operation |
| Operating Speeds | 10 Mbit/s, 100 Mbit/s, and 1000 Mbit/s |
| Package Type | LFBGA159 (12 mm x 12 mm) |
| Core Voltage | 1.2 V |
| Operating Temperature | -40°C to +105°C (Automotive Grade 2) |
| Interface | SPI for host controller access |
| Standards Compliance | IEEE 802.3, IEEE 802.1AS, IEEE 802.1Qav, IEEE 1588v2 |
Key Features
- Store and forward architecture
- Ingress rate-limiting on a per-port and per-priority basis for Unicast/Multicast and Broadcast traffic
- Frame replication and retagging of traffic
- Frame mirroring for enhanced diagnostics
- Hardware support for AVB and TSN
- Ingress and egress timestamping per port
- Ten IEEE 802.1Qav credit-based shapers available
- IEEE 802.1X support for setting port reachability and disabling address learning
- Broadcast storm protection
- Statistics for dropped frames and buffer load
- Support for ring-based redundancy (for time-triggered traffic only)
Applications
The SJA1105SELY is designed for various automotive networking applications, including:
- Automotive gateway systems
- Body domain controllers
- Interconnecting multiple ECUs in a daisy chain configuration
- Infotainment systems leveraging AVB
- Advanced driver assistance systems (ADAS)
Q & A
- What is the SJA1105SELY?
The SJA1105SELY is a 5-port automotive Ethernet switch from NXP USA Inc., compliant with IEEE 802.3 standards.
- What are the key features of the SJA1105SELY?
Key features include store and forward architecture, ingress rate-limiting, frame replication, frame mirroring, and support for AVB and TSN.
- What are the operating speeds of the SJA1105SELY?
The device operates at 10 Mbit/s, 100 Mbit/s, and 1000 Mbit/s.
- What is the package type of the SJA1105SELY?
The device comes in an LFBGA159 package (12 mm x 12 mm).
- What is the core voltage of the SJA1105SELY?
The core voltage is 1.2 V.
- What is the operating temperature range of the SJA1105SELY?
The operating temperature range is -40°C to +105°C (Automotive Grade 2).
- Does the SJA1105SELY support AVB and TSN?
Yes, it supports Audio Video Bridging (AVB) and Time-Sensitive Networking (TSN).
- What interfaces does the SJA1105SELY support?
The device supports MII, RMII, and RGMII interfaces, as well as SPI for host controller access.
- What are some common applications of the SJA1105SELY?
Common applications include automotive gateway systems, body domain controllers, and interconnecting multiple ECUs in a daisy chain configuration.
- Does the SJA1105SELY have any diagnostic features?
Yes, it includes frame mirroring for enhanced diagnostics and statistics for dropped frames and buffer load.
