AX88772
USB to 10/100 Fast Ethernet/HomePNA Controller
Document No: AX88772_11/4/24/07
Features
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Single chip USB to 10/100 Fast Ethernet and
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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
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
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Supports 4 endpoints on USB interface
High performance packet transfer rate over USB
bus using proprietary burst transfer mechanism
(submitted for US patent application)
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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
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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.
Provides optional MII interface for Ethernet PHY
and HomePNA/ HomePlug PHY interface
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
RJ11
RJ45
Magnetic
Magnetic
RJ45
Home LAN PHY
10/100 PHY (FX)
Magnetic
EEPROM
AX88772
USB I/F
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.
ASIX ELECTRONICS CORPORATION
4F, NO.8, Hsin Ann Rd., Science-Based Industrial Park, Hsin-Chu City, Taiwan, R.O.C.
Released Date: 4/24/2007
TEL: 886-3-579-9500
FAX: 886-3-579-9558
http://www.asix.com.tw
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