LAN9374-I/ZMX

Controllers Overview

The LAN9374-I/ZMX is an automotive-grade, multi-port AVB/TSN Ethernet switch manufactured by Microchip Technology. It integrates six 100BASE-T1 physical layer transceivers compliant with IEEE 802.3bw-2015 and two configurable external MAC ports supporting RGMII, RMII, or MII interfaces. The device operates within a Grade 2 automotive temperature range of -40°C to +105°C and is qualified to AEC-Q100 standards. It features hardware support for IEEE 802.1AS time synchronization, IEEE 1588v2 PTP, and IEEE 802.1Qav traffic shaping. The component utilizes a 128-pin TQFP package measuring 14 x 14 mm.

Controllers Feature Summary

• Supports up to six integrated 100BASE-T1 Ethernet PHYs with extended cable reach exceeding 15 meters
• Provides full Audio Video Bridging (AVB) and Time Sensitive Networking (TSN) capabilities including hardware timestamping
• Includes advanced diagnostics such as LinkMD+ cable testing and Deep Packet Inspection using TCAM
• Integrates EtherGREEN energy efficiency features like OPEN Alliance TC10 sleep/wakeup and ultra-deep-sleep power down

Controllers Applications

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

Controllers Procurement Notes

Verify the specific suffix 'I/ZMX' against official Microchip documentation to confirm the exact temperature grade and package variant. Ensure compatibility with existing design constraints regarding the 128-pin TQFP footprint and thermal requirements. Confirm that the selected revision matches the required automotive qualification standards for your target application environment.

Controllers Selection Notes

Select this model when a high port count of six 100BASE-T1 connections is required within a compact form factor. It is suitable for designs needing robust TSN and AVB hardware support without external PHY components. Consider the pin compatibility with other LAN937x family members if future scalability or migration is anticipated.

Controllers Part Context

This component belongs to the LAN937x family of scalable Ethernet switches designed specifically for automotive networking applications. Unlike the LAN9372 which includes a 100BASE-TX port, the LAN9374 focuses exclusively on six 100BASE-T1 ports. All 128-pin devices in this series share pin compatibility and common software drivers, simplifying development across different port configurations.

Controllers Replacement Considerations

LAN9372-I/ZMX: Offers five 100BASE-T1 ports plus one 100BASE-TX port; pin-compatible but reduced T1 capacity. LAN9373-I/ZMX: Provides five 100BASE-T1 ports and an additional SGMII interface; pin-compatible but lacks the sixth T1 port.