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SJA1105PELY

SJA1105PELY

NXP USA Inc.
Ethernet Switch IEEE 802.3 SPI Interface 159-LFBGA (12x12)
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Overview

The SJA1105PELY is an automotive-grade, five-port Ethernet switch designed for high-reliability vehicle networking and industrial communication systems. It supports a versatile range of interfaces including MII, RMII, RGMII, and SGMII, allowing for flexible connectivity between 10/100/1000 Mbit/s devices. The switch features extensive hardware support for IEEE 802.1Qav AVB traffic shaping and IEEE 1588v2 time synchronization, making it ideal for deterministic Ethernet applications.

Why Choose This Part

It offers 4096 VLAN support and a store-and-forward architecture that ensures frame integrity across multiple voltage domains (1.65V to 3.6V). The hardware-level implementation of one-step synchronization forwarding and 16 credit-based shapers reduces the CPU overhead typically required for managing high-priority traffic.

Applications

Automotive In-Vehicle Networking
Serves as the central communication backbone for ADAS, infotainment systems, and electronic control units requiring AEC-Q100 Grade 2 reliability.
Industrial Time-Sensitive Networking (TSN)
Utilizes hardware-based IEEE 802.1AS timestamping and credit-based shapers to ensure low-latency delivery of critical control data.
Audio Video Bridging (AVB)
Implements IEEE 802.1Qav traffic shaping to provide guaranteed bandwidth and latency for high-quality multimedia streaming.
Network Cascading
Uses dedicated synchronization outputs and SGMII interfaces to link multiple switches for expanded port counts in complex topologies.

Key Specifications

Function Switch
Protocol Ethernet
Interface SPI
Standards IEEE 802.3
Package / Case 159-LFBGA
Current - Supply 3.5mA
Voltage - Supply 1.65V ~ 3.6V
Operating Temperature -40degC ~ 125degC (TJ)
Supplier Device Package 159-LFBGA (12x12)

Getting Started

Designers should leverage the SJA1105-EVB evaluation board and NXP configuration tools to define port speeds and VLAN tagging over the SPI interface. Ensure the 25 MHz system clock meets the required jitter specifications for RGMII/SGMII stability as outlined in the hardware design guide.

Categories

Interface ICs > Ethernet PHY Automotive > ADAS & Autonomous Driving