2024年5月9日发(作者：)

AR9285

Single-chip PCIe based on 802.11n

1–stream specification

Technology Overview

Solution Highlights

• Supports up to 150 Mbps

• Highly integrated single chip PCI Express CMOS solution with

MAC/baseband processor and 2.4 GHz radio

• Backward-compatible to 802.11g; forward–compatible to

multi-stream 802.11n

• Supports all mandatory IEEE 802.11n features:

– including several IEEE 802.11n optional features

such as HT40, half-guard internal in HT40 and

Rx Space Time Block Coding

• Compliant with IEEE 802.11b, 802.11d, 802.11e, 802.11g standards

and 802.11i specification

The AR9285 single-chip PCI Express

®

solution

features Atheros Align technology, which leverages

the 802.11n 1–stream specification to provide the

optimal upgrade path from legacy 802.11 solutions.

The single-stream feature enables a new class of

Wi-Fi devices that deliver performance enhancements over the existing

802.11g technology, at comparable price points. Align

®

solutions are

forward compatible to higher-performance, multi-stream, MIMO–based

802.11n, and are available in reference designs to serve the networking,

computing and consumer electronics markets. The enhanced throughput

of Align 1–stream solutions improves network efficiency by occupying the

wireless channel for shorter periods than slower 11g devices – reducing

congestion and increasing capacity for additional wireless devices.

Align employs all the mandatory and select optional features of the

11n specification, and Atheros’ advanced radio design techniques, to

effectively double the wireless coverage over legacy WLAN.

Product Overview

The Atheros AR9285, our 4th generation, highly integrated solution

targeting the value computing market. The AR9285 integrates a complete

WLAN solution–media access controller (MAC), baseband, and a high–

performance 2.4 GHz radio in a low–cost digital CMOS design.

The Atheros AR9285 single-chip PCI Express (PCIe) solution is a highly

integrated MAC/Baseband/Radio solution that is backward compatible to

802.11g and forward compatible to multi-stream 11n. It enables PC OEMs

to cost-effectively migrate their 11g-based platforms to the enhanced,

future-proofed performance of Align. Targeting the growing value

computing products market segment with 150 Mbps PHY rate capability,

Align is the ideal technology for computing users seeking robust through-

put, enhanced range and extended battery life for data networking

applications such as web surfing, instant messaging and e-mail.

Single-Chip 802.11n-Compatible PCI Express

CMOS MAC/Baseband/Radio

•

Highly compact, small footprint package

•

Fourth-generation solution with integrated power amplifier

and low noise amplifier for best total solution cost

•

PCI Express Based Specification 1.1 compliant

•

Low power sleep modes supported

AR9285 Architecture

2.4 GHz

PA

RF Switch

Frequency

Synthesizers

Transmitter

LNA

Receiver

Bias/Control

ADC

DAC

Baseband

PHY and

Wireless

MAC

Host

Interface

40 MHz

Crystal

3.3v

Supply

AR9285

30 mm

2

6

.

8

m

m

Single-chip PCIe based on 802.11n

1–stream specification

AR9285 Specifications

Frequency Band 2.4 GHz

802.11b, 802.11g, 802.11n

OFDM with BPSK, QPSK,

16 QAM, 64 QAM;

DBPSK, DQPSK, CCK

1/2, 2/3, 3⁄4, 5/6

AES, TKIP, WEP

802.11e

CSMA/CA

PCI Express

GPIOs, LEDs

1 to 11 Mbps

6 to 54 Mbps

6.5 to 150 Mbps

1.2V +/-5%

3.3V +/-10%

8 mm x 8 mm

68-pin LPCC

HB95

Network Standard

Modulation Modes

FEC Coding Rate

Hardware Security

Quality of Service

AR9285

Reference Design Highlights

Media Access Technique

Communication Interface

Peripheral Interface

Supported Data Rates

IEEE 802.11b

IEEE 802.11g

IEEE 1-stream 802.11n

Operating Voltage

Package Dimensions

Package

• Low RBOM component count and cost

• Aggressive 2 layer, Half-Mini Card design for optimized PCB cost

• PCI Express Half-Mini Card 1.1 specification compliant

• Worldwide regulatory compliant (country list available on request)

• Single worldwide SKU

• Driver support on Windows Vista and XP as well as Linux

Atheros Communications is a leading developer of semiconductor

system solutions for wireless and other network communications

products. Atheros combines its wireless and networking systems

expertise with high-performance radio frequency (RF), mixed signal

and digital semiconductor design skills to provide highly integrated

chipsets that are manufactured on low-cost, standard complementary

metal-oxide semiconductor (CMOS) processes. Atheros technology

is used by a broad base of leading customers, including networking

equipment, computing and consumer device manufacturers.

For more information on the AR9285 or other solutions from Atheros

contact your local representative:

Atheros Communications, s Hong Kong Limited

t +1 408.773.5200t +852 8206.1131

f +1 408.773.9940f +852 8206.1301

Atheros Communications KK-JapanAtheros (Shanghai) Co., Ltd.

t +81 3.5501.4100t +86 21.5108.3626

f +81 3.5501.4129 f +86 21.5027.0100

Atheros Communications Intl, LLC-TaiwanAtheros Korea

t +886 2.8751.6385t +82 31.786.0428

f +886 2.8751.6397

For more information on Atheros and Atheros wireless technology please visit

Specification subject to change © 2010 Atheros Communications, all rights reserved

Atheros, the Atheros logo, Align and the Align logo are registered trademarks of Atheros

Communications, Inc. There is Here is a trademark of Atheros Communications, Inc.

All other trademarks mentioned in this document are the property of their respective owners.

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