AX88772C Datasheet, PDF (4/20 Pages) ASIX Electronics Corporation – AX88772C Product Introduction

AX88772C Product Introduction
1. Introduction
The AX88772C USB 2.0 to 10/100M Fast Ethernet controller with Microsoft AOAC(Always
On Always Connected) support is a high performance and highly integrated ASIC which
enables a low cost, small form factor, and simple plug-and-play Fast Ethernet network
connection capability for desktops, notebook PCs, Ultrabooks, cradles/port replicators/docking
stations, game consoles, digital-home appliances, and any embedded system using a standard
USB port.
The AX88772C can be used in any embedded system with a USB host microcontroller requiring
a twisted pair physical network connection. Featuring a USB interface (compliant with USB
specification V2.0 and V1.1) to communicate with a USB Host Controller, the AX88772C also
integrates on-chip Ethernet MAC and PHY (IEEE802.3 and IEEE802.3u compatible) and
embedded memory. Additionally, the AX88772C needs only a single 25MHz crystal to drive
both the USB and Ethernet PHYs.
The AX88772C offers a wide array of features including IPv4/IPv6 checksum offload engine,
Protocol Offload(ARP & NS), HP Auto-MDIX, and IEEE 802.3x and back-pressure flow
control. The AX88772C also offers multiple power management Wake-on-LAN features,
including Magic Packet, Microsoft Wakeup Frame, Link Status Change, 32 Microsoft Wakeup
Patterns and Wakeup Packet Indication that allows the AOAC platform to enter a low-power
“Connected Standby” state and wake on a desired network pattern.
The AX88772C 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 HomePlug, HomePNA, etc.
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)
USB 2.0 to 10/100M Fast Ethernet Controller with Microsoft AOAC Support
AX88772C -- USB 2.0 to 10/100M Fast Ethernet Controller with Microsoft AOAC Support
This document provides an overview of AX88772C USB 2.0 to 10/100M Fast Ethernet
Controller with Microsoft AOAC Support product.
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