ASIX ELECTRONICS CORPORATION

Released Date: 4/24/2007

4F, NO.8, Hsin Ann Rd., Science-Based Industrial Park, Hsin-Chu City, Taiwan, R.O.C.

TEL: 886-3-579-9500

FAX: 886-3-579-9558

http://www.asix.com.tw

AX88772

USB to 10/100 Fast Ethernet/HomePNA Controller

Features

•

Single chip USB to 10/100 Fast Ethernet and

HomePNA and HomePlug Network Controller

•

Integrates on-chip 10/100Mbps Fast Ethernet PHY

•

USB specification 1.1 and 2.0 compliant

•

Supports USB Full and High Speed modes with Bus

power capability

•

Supports 4 endpoints on USB interface

•

High performance packet transfer rate over USB

bus using proprietary burst transfer mechanism

(submitted for US patent application)

•

IEEE

802.3

10BASE-T

and

100BASE-TX

compatible

•

Embedded 20KB SRAM for RX packet buffering

and 8KB SRAM for TX packet buffering

•

Supports

both

full-duplex

and

half-duplex

operation in Fast Ethernet

•

Provides optional MII interface for Ethernet PHY

and HomePNA/ HomePlug PHY interface

•

Supports Suspend mode and Remote Wakeup via

Link-up, Magic packet, or external pin

•

Optional PHY power down during Suspend mode

•

Supports 256/512 bytes (93c56/93c66) of serial

EEPROM (for storing USB Descriptors)

•

Supports automatic loading of Ethernet ID, USB

Descriptors and Adapter Configuration from

EEPROM after power-on initialization

•

External PHY loop-back diagnostic capability

•

Integrates on-chip 3.3V to 2.5V voltage regulator

and requires only single power supply: 3.3V

•

Small form factor with 128-pin LQFP package

•

12MHz and 25Mhz clock input from either crystal

or oscillator source

•

Operating temperature range: 0°C to 70°C.

*IEEE is a registered trademark of the Institute of Electrical and

Electronic Engineers, Inc.

*All other trademarks and registered trademark are the property of their

respective holders.

Product Description

The AX88772 USB to 10/100 Fast Ethernet/HomePNA/HomePlug controller is a high performance and highly integrated

ASIC with embedded 28KB SRAM for packet buffering. It enables low cost and affordable Fast Ethernet network

connection to desktop, notebook PC, and embedded system using popular USB ports. It has an USB interface to

communicate with USB host controller and is compliant with USB specification V1.1 and V2.0. It implements

10/100Mbps Ethernet LAN function based on IEEE802.3, and IEEE802.3u standards or HomePNA standard. It

integrates an on-chip 10/100Mbps Ethernet PHY to simplify system design and provides an optional media-independent

interface (MII) for implementing Fast Ethernet and HomePNA functions.

System Block Diagram

Always contact ASIX for possible updates before starting a design.

This data sheet contains new products information. ASIX ELECTRONICS reserves the rights to modify product specification without notice. No

liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product.

USB I/F

AX88772

10/100 PHY (FX)

Magnetic

RJ45

EEPROM

Home LAN PHY

Magnetic

RJ11

Document No: AX88772_11/4/24/07

Magnetic

RJ45