[ATHEROS]

General Description

The Atheros AR9271 is a highly integrated singlechip solution for 2.4 GHz 802.11n-ready wireless local area networks (WLANs) that enables a highperformance 1x1 configuration for wireless station applications demanding robust link quality and maximum throughput and range. The AR9271 integrates a multi-protocol MAC, baseband processor, analog-to-digital and digital-to-analog (ADC/DAC) converters, 1x1 radio transceiver, RF switch, and USB interface in an all-CMOS device for low power and small form factor applications.

Features

■ All-CMOS solution interoperable with IEEE

802.11b/g/n WLANs

■ Intergrated RF front end with high-output PA,

LNA, Rx/Tx switch

■ Internal diversity switch which selects antenna

1 or 2 for baseband signal processing

■ Supports optional external LNA, PA

■ 2.4 GHz WLAN MAC/BB processing

■ BPSK, QPSK, 16 QAM, 64 QAM, DBPSK,

DQPSK, and CCK modulation schemes

■ Supports 72.2 Mbps for 20 MHz and 150 Mbps

for 40 MHz channel operations

■ Wireless multimedia enhancements quality of

service support (QoS)

■ 802.11e-compatible bursting

■ Support for IEEE 802.11e and IEEE 802.11i

standards

■ WEP, TKIP, and AES hardware encryption

■ Reduced (short) guard interval

■ Frame aggregation

■ Block ACK

■ USB 2.0 interface

■ Supports the access of a serial peripheral (SPI)

compatible Flash memory, which includes

booting from an SPI Flash and auto

installation

■ IEEE 1149.1 standard test access port and

boundary scan architecture supported

■ 68-pin, 8 mm x 8 mm LPCC package