LAN9500-ABZJ

Controllers Overview

The LAN9500-ABZJ is a single-chip Hi-Speed USB 2.0 to 10/100 Ethernet controller manufactured by Microchip Technology. It integrates a USB 2.0 device controller, USB PHY, 10/100 Ethernet MAC, and Ethernet PHY with HP Auto-MDIX support. The device supports 480 Mbps high-speed and 12 Mbps full-speed USB modes, alongside 10BASE-T and 100BASE-TX Ethernet standards. It features 30 KB of internal packet buffering (28 KB FIFO, 2 KB TLI), four USB endpoints, and flexible address filtering including multicast hash filtering. Power management includes multiple suspend states and remote wakeup capabilities. The component is housed in a 56-pin QFN package measuring 8x8 mm and operates within a commercial temperature range of 0°C to +70°C.

Controllers Feature Summary

• Integrates Hi-Speed USB 2.0 device controller and 10/100 Ethernet MAC/PHY on a single chip
• Supports bus-powered and self-powered operation with integrated power-on reset circuit
• Provides flexible address filtering modes including perfect address and hash-filtered multicast addresses
• Includes an EEPROM controller for automatic loading of USB configuration and MAC address

Controllers Applications

• Embedded Systems
• Set-Top Boxes
• Personal Video Recorders (PVRs)
• Consumer Electronics Devices
• Networked Printers
• USB Port Replicators
• Standalone USB to Ethernet Dongles
• Test Instrumentation

Controllers Procurement Notes

Verify the specific suffix against official documentation to confirm temperature grade and feature set. The LAN9500 family contains variants with differing power management capabilities, such as NetDetach and Suspend3 support, which are exclusive to the 'A' and 'Ai' sub-series. Ensure the selected part number matches the required environmental operating range and functional specifications for the target design.

Controllers Selection Notes

Select this component for applications requiring a cost-effective USB-to-Ethernet bridge solution. Note that the LAN9500 lacks advanced low-power features like NetDetach found in the LAN9500A variant. Designers must account for the specific external resistor values required for the EXRES pin and crystal oscillator circuitry, which differ from later revisions in the family. Verify driver compatibility with the target operating system before finalizing the selection.

Controllers Part Context

The LAN9500 is part of the broader LAN950x family, which also includes the LAN9500i, LAN9500A, and LAN9500Ai. These devices share pin compatibility but differ in feature sets and external component requirements. The LAN9500 represents the base model within this series, offering standard connectivity without the enhanced power-saving modes available in the 'A' and 'Ai' versions. It serves as a foundational solution for basic USB-to-Ethernet bridging needs.

Controllers Replacement Considerations

LAN9500i-ABZJ: Pin-compatible industrial temperature variant. LAN9500A-ABZJ: Pin-compatible variant with additional low-power features like NetDetach and Suspend3 support.