Design Applications

Cell Phones and PDAs

As cell phones and PDAs include more memory for storing

rich media, faster USB transfer rates become more important.

The NET2272 is designed to easily add Hi-Speed USB 2.0

functionality to today’s communication devices.

With the USB Communications Device class driver, PCs can

easily use cell phones, connected through USB, to setup a high

speed wireless internet connection. PLX provides device

firmware supporting the USB Communications Device

standard. This means that PCs can recognize these devices

without additional host drivers.

The small packaging of the NET2272 (6x6mm) is well-suited

for adding Hi-Speed USB to these portable devices. The low

power consumption of the NET2272 facilitates the design of

bus-powered or battery-powered devices. Flexible I/O

voltages (1.8V to 5V) allow the NET2272 to connect

gluelessly to a diverse mix of CPUs and DSPs.

Portable Media Players

The NET2272 is designed into many portable media players

on the market today. Most portable media players contain a

hard disk for media storage, a high-quality LCD display, video

input and output connections, and a Hi-Speed USB port for

data transfer. The NET2272’s small package, high

performance, and low power consumption makes it an ideal

solution for this battery-powered device.

The NET2272 supports Microsoft’s Media Transfer Protocol

(MTP), which allows playback of WMA and WMV files with

Digital Rights Management (DRM). PLX also provides

device firmware supporting the USB Mass Storage standard.

This means that PCs can recognize these devices without

additional host-side drivers.

Application notes showing sample connections between the

NET2272 and various CPUs are available online from the

PLX website. These application notes detail schematics,

timing diagrams, and register settings.

Figure 2: Adding a Hi-Speed USB port to cell phones

Development Tools

The NET2272 PCI-Based Reference Design Kit

The NET2272 PCI-RDK includes a PCI board that easily

plugs into any standard PCI slot (3.3V or 5V). This PCI board

allows a standard PC to emulate a USB device. With known

good hardware, firmware development can begin even before

the final device is ready. Schematics, layout, and BOM

information is shipped with the kit.

Both USB host and peripheral-side software is included with

the NET2272 PCI-RDK. The host-side software consists of

USB drivers and test applications. The peripheral-side

firmware is used to configure the NET2272 to resemble a

standard USB class device (like a printer or mass storage

device) for which no USB host drivers will need to be written.

For custom applications, firmware APIs are provided to

abstract the USB transactions to reads and writes. While this

software is available for various operating systems, it is

written in standard C with portability in mind. A porting

guide is shipped with each kit.

PLX Technology, Inc.

870 Maude Ave.

Sunnyvale, CA 94085 USA

Tel: 1-800-759-3735

Tel: 1-408-774-9060

Fax: 1-408-774-2169

Product Ordering Information

Part Number

Description

NET2272REV1A-LF

Local Bus to USB 2.0 Hi-Speed Peripheral Controller –

10x10mm 64-Pin TQFP Package

NET2272REV1A-BC F

Local Bus to USB 2.0 Hi-Speed Peripheral Controller –

6x6mm 64-Ball BGA Package

NET2272PCI-RDK

NET2272 Reference Design Kit

Please contact your local PLX sales representative for ordering information.

© 2005 PLX Technology, Inc. All rights reserved. PLX and the PLX logo are registered trademarks of PLX Technology, Inc. All other product names that appear in this material are for

identification purposes only and are acknowledged to be trademarks or registered trademarks of their respective companies. Information supplied by PLX is believed to be accurate and reliable,

but PLX Technology, Inc. assumes no responsibility for any errors that may appear in this material. PLX Technology, Inc. reserves the right, without notice, to make changes in product design or

specification.

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