[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
â All-CMOS solution interoperable with IEEE
802.11b/g/n WLANs
â Intergrated RF front end with high-output PA,
LNA, Rx/Tx switch
â Internal diversity switch which selects antenna
1 or 2 for baseband signal processing
â Supports optional external LNA, PA
â 2.4 GHz WLAN MAC/BB processing
â BPSK, QPSK, 16 QAM, 64 QAM, DBPSK,
DQPSK, and CCK modulation schemes
â Supports 72.2 Mbps for 20 MHz and 150 Mbps
for 40 MHz channel operations
â Wireless multimedia enhancements quality of
service support (QoS)
â 802.11e-compatible bursting
â Support for IEEE 802.11e and IEEE 802.11i
standards
â WEP, TKIP, and AES hardware encryption
â Reduced (short) guard interval
â Frame aggregation
â Block ACK
â USB 2.0 interface
â Supports the access of a serial peripheral (SPI)
compatible Flash memory, which includes
booting from an SPI Flash and auto
installation
â IEEE 1149.1 standard test access port and
boundary scan architecture supported
â 68-pin, 8 mm x 8 mm LPCC package
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