LAN9371-I/ZMX

Controllers Overview

The LAN9371-I/ZMX is a six-port AVB/TSN Ethernet switch with integrated PHYs, designed for Grade 2 automotive applications (-40°C to +105°C). It features three 100BASE-T1 ports compliant with IEEE 802.3bw-2015 and one 100BASE-TX port. Two configurable external MAC ports support RGMII, RMII, or MII interfaces. The device supports full Audio Video Bridging (AVB) and Time-Sensitive Networking (TSN), including IEEE 802.1AS, 1588v2 PTP, Qav, Qbv, and Qci. It includes EtherGREEN energy efficiency features like OPEN Alliance TC10 sleep/wakeup. The component is housed in a 128-pin TQFP package.

Controllers Feature Summary

• Integrated 100BASE-T1 and 100BASE-TX physical layer transceivers
• Hardware support for AVB and TSN protocols including time synchronization
• Configurable external MAC interfaces for host processor connectivity
• Advanced diagnostics and security features including cable testing

Controllers Applications

• Advanced Driver-Assistance Systems (ADAS)
• In-Vehicle Backbone Networks
• Automotive Gateways
• Infotainment Systems
• Telematics and Smart Antennas

Controllers Procurement Notes

Verify the specific suffix 'I/ZMX' against the manufacturer's official ordering guide to confirm temperature grade and packaging details. Ensure compatibility with existing design files and software drivers shared across the LAN937x family before procurement.

Controllers Selection Notes

Select this component when a compact solution with integrated 100BASE-T1 PHYs is required for automotive networks. It is suitable for designs needing cascade mode expansion or direct connection to host processors via RGMII/MII interfaces while maintaining strict latency and synchronization requirements.

Controllers Part Context

The LAN9371 belongs to the LAN937x family of switches, which share common software drivers and pinouts in the 128-TQFP package. It differs from other family members primarily by the number of integrated 100BASE-T1 PHYs, offering three ports compared to four or more in variants like the LAN9372 or LAN9374.

Controllers Replacement Considerations

Pin-compatible replacements within the same package include the LAN9372, LAN9373, and LAN9374. These devices offer higher port counts but maintain software driver compatibility. Verify that the increased port density meets the specific application requirements.