LAN9500AI-ABZJ

Controllers Overview

The LAN9500AI-ABZJ is a single-chip Hi-Speed USB 2.0 to 10/100 Ethernet controller from Microchip Technology. It integrates a 10/100 Ethernet MAC with full-duplex support, an Ethernet PHY with HP Auto-MDIX, and a USB 2.0 Hi-Speed Device Controller with PHY. The device supports HS (480 Mbps) and FS (12 Mbps) modes, four USB endpoints, and IEEE 802.3/802.3u standards. It features 30 KB of internal packet buffering, 11 GPIOs, and low-power modes including NetDetach. Operating at a single 3.3V I/O supply with an internal core regulator, it is housed in a 56-pin QFN (8x8 mm) package compliant with RoHS standards.

Controllers Feature Summary

• Integrates Hi-Speed USB 2.0 device controller and 10/100 Ethernet MAC/PHY on a single chip
• Supports reduced power operating modes including NetDetach and PCI-like PME wake
• Includes EEPROM controller for automatic loading of USB configuration and MAC address
• Features IEEE 1149.1 compliant TAP controller for boundary scan testing

Controllers Applications

• Embedded Systems
• Set-Top Boxes
• PVRs
• CE Devices
• Networked Printers
• USB Port Replicators
• Standalone USB to Ethernet Dongles
• Test Instrumentation
• Industrial

Controllers Procurement Notes

Verify the specific suffix ABZJ corresponds to the industrial temperature range (-40°C to +85°C) and tray packaging as indicated by standard Microchip naming conventions for this family. Confirm that system design components, such as the EXRES resistor value (12.0K Ohm) and absence of R3, align with the LAN9500A/Ai specifications rather than the base LAN9500/i variants. Ensure driver compatibility with target OS environments like Windows, Linux, or Win CE.

Controllers Selection Notes

Select the LAN9500AI-ABZJ when industrial temperature operation (-40°C to +85°C) is required alongside Hi-Speed USB 2.0 connectivity. This variant offers enhanced power management features compared to the base LAN9500, including Suspend State Good Packet wakeup and increased wakeup frame filters. It is suitable for designs needing integrated PHY, Auto-MDIX, and flexible GPIO configurations within a compact 56-pin QFN footprint.

Controllers Part Context

The LAN9500AI-ABZJ belongs to the LAN950x family, which includes the LAN9500, LAN9500i, LAN9500A, and LAN9500Ai. While pin-compatible with other family members, the AI variant specifically targets industrial environments with extended temperature ranges and advanced power-saving capabilities like NetDetach. It shares the same 56-pin QFN package form factor but requires specific external component values distinct from the commercial or non-Ai counterparts.

Controllers Replacement Considerations

LAN9500A-ABZJ is the commercial temperature equivalent. LAN9500i-ABZJ is the industrial variant without Ai-specific power features. Verify schematic compatibility regarding EXRES and R3 components when substituting between these models.

Controllers FAQ

What is the difference between LAN9500A and LAN9500Ai?

The LAN9500Ai supports additional low-power features such as NetDetach, Suspend State Good Packet wakeup, and increased wakeup frame filters compared to the LAN9500A.

Does the LAN9500AI-ABZJ support external PHY connections?

Yes, it provides an external MII interface that allows connection to an external Fast Ethernet PHY, HomePNA, or HomePlug PHY.

How is the MAC address configured?

The device includes an EEPROM controller that can automatically load the MAC address and USB configuration data from an external EEPROM upon reset.