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AR9287 PDF Data sheet ( 特性 )

部品番号 AR9287
部品説明 Single-Chip 2x2 MIMO MAC/BB/Radio
メーカ Atheros
ロゴ Atheros ロゴ 


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AR9287 Datasheet, AR9287 PDF,ピン配置, 機能
Data Sheet
February 2010
AR9287 Single-Chip 2x2 MIMO MAC/BB/Radio with PCIE
Interface for 802.11n 2.4 GHz WLANs
General Description
The Atheros AR9287 is a highly integrated
single-chip solution for 2.4 GHz 802.11n-ready
WLANs to enable high-performance 2x2 MIMO
configurations for applications demanding
robust link quality and maximum throughput
and range. The AR9287 integrates a multi-
protocol MAC, baseband processor, analog-to-
digital and digital-to-analog (ADC/DAC)
converters, 2x2 MIMO radio transceiver
including LNA, PA, and RF switch, and PCI
Express interface in an all-CMOS device for low
power and small form factor applications.
The AR9287 implements half-duplex OFDM,
CCK, and DSSS baseband processing, supporting
up to 150 Mbps for 20 MHz and 300 Mbps for
40 MHz channel operations respectively, and
IEEE 802.11b/g data rates. Additional features
include signal detection, automatic gain control,
frequency offset estimation, symbol timing, and
channel estimation. The AR9287 MAC supports
the 802.11 wireless MAC protocol, 802.11i
security, receive and transmit filtering, error
recovery, and quality of service (QoS).
The AR9287 supports two simultaneous traffic
streams using up to two integrated transmit
chains and receive chains for high throughput
and range performance. Transmit chains combine
baseband in-phase (I) and quadrature (Q) signals,
convert them to the desired frequency, and drive
the RF signal to multiple antennas. Receive
chains convert RF signal to baseband I and Q
outputs. The frequency synthesizer supports
one-MHz steps to match frequencies defined by
IEEE 802.11b/g/n specifications.
The AR9287 supports frame data transfer to and
from the host using a PCIE interface providing
interrupt generation and reporting, power save,
and status reporting. Other external interfaces
include serial EEPROM and GPIOs. The AR9287
operates with standard legacy 802.11b/g devices.
Features
All-CMOS MIMO solution interoperable with
IEEE 802.11b/g/n WLANs
2x2 MIMO technology improves effective
throughput and range over existing
802.11b/g products
Integrated LNAs, PAs, and RF switches
eliminate the need for external front-end
modules
Supports spatial multiplexing, cyclic-delay
diversity (CDD), and maximal ratio
combining (MRC)
2.4 GHz WLAN MAC/BB processing
BPSK, QPSK, 16 QAM, 64 QAM, DBPSK,
DQPSK, and CCK modulation schemes
Data rates of up to 150 Mbps for 20 MHz
channels and 300 Mbps for 40 MHz channels
Wireless multimedia enhancements for QoS
802.11e-compatible bursting
Support for IEEE 802.11e, h, and i standards
WEP, TKIP, and AES hardware encryption
20 and 40 MHz channelization
PCIE 1.1 compliant
Support for 2–3 wire Bluetooth coexistence
Reduced (short) guard interval
Frame aggregation
Block ACK
IEEE 1149.1 standard test access port and
boundary scan architecture supported
9 mm x 9 mm 76-pin LPCC package
AR9287 System Block Diagram
© 2009-2010 by Atheros Communications, Inc. All rights reserved. Atheros®, Atheros Driven®, Align®, Atheros XR®, Driving the Wireless Future®, Intellon®, No New Wires®,
Orion® , PLC4Trucks®, Powerpacket®, Spread Spectrum Carrier®, SSC®, ROCm®, Super A/G®, Super G®, Super N®, The Air is Cleaner at 5-GHz®, Total 802.11®, U-Nav®,
Wake on Wireless®, Wireless Future. Unleashed Now.®, and XSPAN®, are registered by Atheros Communications, Inc. Atheros SST™, Signal-Sustain Technology™, Ethos™,
Install N Go™, IQUE™, ROCm™, amp™, Simpli-Fi™, There is Here™, U-Map™, U-Tag™, and 5-UP™ are trademarks of Atheros Communications, Inc. The Atheros logo is a
registered trademark of Atheros Communications, Inc. All other trademarks are the property of their respective holders. Subject to change without notice.
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