LAN7430T/Y9X

Controllers Overview

The LAN7430T/Y9X is a single-chip PCIe to 10/100/1000 Ethernet controller manufactured by Microchip Technology. It integrates a PCIe 3.1 PHY supporting one lane at 2.5GT/s, a PCIe endpoint controller, and a Gigabit Ethernet PHY. The device operates on a single 3.3V supply with internal switching and LDO regulators. It supports IEEE 802.3az Energy Efficient Ethernet (EEE) and 10BASE-Te. Key features include IEEE 1588-2008 PTP support, Wake-on-LAN, and scatter-gather DMA. The component is housed in a 48-pin SQFN package measuring 7 x 7 mm.

Controllers Feature Summary

• Integrates PCIe 3.1 PHY and Endpoint Controller for high-speed connectivity
• Includes Gigabit Ethernet PHY with auto-negotiation and Auto-MDIX
• Supports IEEE 1588-2008 Precision Time Protocol for clock synchronization
• Features advanced power management including L1.1/L1.2 sub-states and EEE

Controllers Applications

• Automotive infotainment and telematics systems
• PCIe to Gigabit Ethernet adapters and bridges
• Embedded systems requiring PCIe network connectivity
• Gigabit backplane applications
• LTE modems and networked cameras

Controllers Procurement Notes

Verify the specific suffix Y9X against official documentation to confirm package type and temperature range. Ensure compatibility with system voltage requirements and interface standards before procurement. Check for any applicable errata sheets relevant to the silicon revision.

Controllers Selection Notes

Select this component when a compact solution integrating both MAC and PHY is required. It is suitable for designs needing PCIe 3.1 connectivity with minimal external components. Consider the integrated OTP memory for configuration if external EEPROM usage is undesirable.

Controllers Part Context

This part belongs to the LAN743x family of low-power Ethernet controllers. The LAN7430 variant specifically includes an integrated Gigabit Ethernet PHY, distinguishing it from the LAN7431 which provides RGMII/MII interfaces for external PHYs. Both share the same PCIe core architecture.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.