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USB-to-Ethernet controller enables fast plug-and-play

Posted: 24 Jun 2010 ?? ?Print Version ?Bookmark and Share

Keywords:USB? Ethernet? USB-to-Ethernet controller? embedded system?

AX88772B USB to 100Base-FX 1x9 SC Ethernet demo board

From ASIX Electronics Corp. comes the AX88772B USB-to-Ethernet controller with low power and low pin count for the embedded Ethernet applications. The new controller has been designed to provide a small form factor solution that enables embedded system designers to deliver Ethernet connectivity while leveraging the proliferation of USB 2.0 technology.

The AX88772B low-pin-count (64-pin LQFP) USB 2.0 to 10/100M Fast Ethernet controller 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, UMPCs, cradles/port replicators/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 controller integrates on-chip Fast Ethernet MAC and PHY, which is IEEE802.3 10Base-T and IEEE802.3u 100Base-TX/ 100BASE-FX compatible. The AX88772B can be used in any embedded system with a USB host microcontroller that needs a twisted pair physical connection or fiber PECL interface to external 100Base-FX optical transceiver module.

The AX88772B supports advanced low-power features, including very low power Wake-on-LAN (WOL) mode and dynamic power management, to reduce power dissipation during idle or light traffic period. The controller also supports AutoDetach power saving, detaching from USB host when Ethernet cable is unplugged.

The AX88772B offers a wide array of features, including IPv4/IPv6 checksum offload engine, HP Auto-MDIX, and IEEE 802.3x and back-pressure flow control. The controller supports two operating temperature rangescommercial grade from 0C to 70C and industrial grade from -40C to 85C.

To help customers evaluate and develop applications with the AX88772B product family, ASIX provides comprehensive technical support including hardware and software application notes, user guides, schematics, PCB layout guides, and drivers for Windows/Linux/WinCE/Mac OS.

- Toni McConnel
Embedded.com





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