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AX88772B Product Introduction

1. Introduction

The AX88772B Low-power USB 2.0 to 10/100M Fast Ethernet controller is a high

performance and highly integrated ASIC which enables low cost, small form factor, and simple

plug-and-play Fast Ethernet network connection capability for desktops, notebook PC’s, Ultra-

Mobile PC’s, docking stations, game consoles, digital-home appliances, and any embedded

system using a standard USB port.

The AX88772B features a USB interface to communicate with a USB Host Controller and is

compliant with USB specification V1.1 and V2.0. The AX88772B implements a 10/100Mbps

Ethernet LAN function based on IEEE802.3, and IEEE802.3u standards with embedded SRAM

for packet buffering. The AX88772B integrates an on-chip 10/100Mbps Ethernet PHY to

simplify system design.

The AX88772B provides an optional Multi-Function-Bus portion A and B (MFA and MFB)

for external PHY or external MAC for different application purposes. The MFA/MFB can be a

reduce-media-independent interface (RMII) for implementing 100BASE-FX Ethernet or

HomePNA functions. The MFA/MFB can also be a Reverse Reduced-MII (Reverse-RMII) for

glueless MAC-to-MAC connections to any MCU with Ethernet MAC RMII interface. In

addition, the MFA/MFB can be configured as general purpose I/O.

The following URL provides detailed online resources of ASIX Electronics high-speed USB-

to-LAN solutions:

(Refer to http://www.asix.com.tw/products.php?op=ProductList&PLine=71)

Low-power USB2.0 to 10/100M Fast Ethernet Controller

AX88772B -- Low-Power USB2.0 to 10/100M Fast Ethernet Controller

This document provides an overview of AX88772B Low-Power USB to 10/100M Fast

Ethernet controller product.