MCHPLAN9500A-ABZJ-TR
Overview
The LAN9500A-ABZJ-TR is a high-performance, small-form-factor USB 2.0 to 10/100 Ethernet bridge designed for embedded systems requiring network connectivity via a USB port. It integrates a 10/100 Ethernet MAC and PHY with a High-Speed USB 2.0 device controller and an integrated voltage regulator. This solution simplifies design by handling complex networking protocols and USB interfacing in a single 56-pin QFN package.
Why Choose This Part
This controller features hardware-level checksum offload for TCP/UDP/IP/ICMP and automatic 32-bit CRC generation to reduce CPU overhead. It includes HP Auto-MDIX support for automatic cable detection and NetDetach technology for power savings when the Ethernet cable is disconnected. The integrated 30KB RAM and 1.2V regulator minimize external component count and PCB footprint.
Applications
Key Specifications
Getting Started
Designers should refer to the Microchip EVB-LAN9500A-MII evaluation board for circuit validation and performance testing. The device supports an external EEPROM for storing MAC addresses and custom USB descriptors. Hardware integration requires a 25MHz crystal and careful routing of the differential USB and Ethernet pairs.
LAN9500A Family
| Part Number | Difference | Stock |
|---|---|---|
| LAN9500A-ABZJ | QFN-56 | 2,439 |
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