Atheros AR9271
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- The AR9271 is a USB to Wi-Fi single chip, typically used in Wi-Fi dongles.
- For a list of all currently documented Atheros chipsets with specifications, see Atheros.
- Known chip revisions:
- AR9271-AL1A
- AR9271L-AL3A 'The first L stands for "Low-Cost".', per Sujith on ath9k-devel
Properties
- Manufacturer: Atheros
- Part name: AR9271
- Type: chip
- Number of buses: 1
- Bus(es): USB 2.0. Probably Faraday FOTG210_UDC
- Number of bands: 1
- Band(s): 2.4GHz
- Data rate: 150 Mbps
- MIMO configuration:
- 1x1 (1 txchain; 2 RX RF chains; 1 rx stream); see note below
- 802.11 PHY Modes: b,g,n
- SOC Architecture: RISC - Tensilica core (Xtensa LX2.1.0) - see open firmware below.
- SOC clock: 117 MHz
- SOC ROM: 24 Kbyte
- SOC RAM: 160 KByte
- Output power:
- (1Mbps): +19 dBm
- (HT20 MCS7): +17 dBm
- (HT40 MCS7): +16 dBm
- Sensitivity (RX-only chain):
- (1Mbps): -96 dBm typ.
- (HT20 MCS7): -73 dBm typ.
- (HT40 MCS7): -70 dBm typ.
- Sensitivity for RX/TX shared chain:
- 3dB worse than RX-only chain
- Integrated RF: PA, LNA, T/R Switch
- Integrated Functions: 802.11 Baseband, 802.11 MAC
- Externally required functions: 2.4G antenna(s),
- 40MHz crystal, SPI flash, serial EEPROM
- Operating temperature range: 0C° to 110C°, typ 45C°
- Marking on chip: Atheros (R); AR9271-AL1A; DOR379C; 1034; KOREA
- Chip Package: 68 pin, 8mm x 8mm, LPCC package
Note about antenna diversity and MIMO: the chip has 2 RX RF chains with 4 analog (RF) combining methods, selected dynamically in real-time for each packet during reception, resulting in performance much closer to MIMO 1x2:1 than MIMO 1x1:1 even though it's not full MIMO-MRC... assuming a second antenna is connected to the secondary RX port, of course. Most adapters omit this second antenna.
Product Brief and Datasheet
Device ID
Default USB ID:
- 0cf3:9271 (Atheros AR9271)
Non-standard USB IDs:
- Many, see query.
Linux support
Built-in Linux kernel support:
- Linux kernel module: ath9k_htc
- in backports
- Linux kernel version: v2.6.35
- Linux kernel date: 2010-08-01
- Firmware: Open Firmware
- In Ubuntu, the firmware files are already included in the base distribution
- In Debian:
- apt-get install firmware-atheros
- (in Debian the firmware-atheros package includes files:
- /lib/firmware/ar9271.fw /lib/firmware/htc_9271.fw
- Without these modprobe ath9k_htc does not create wlan0 device and dmesg shows:
- => Failed to load firmware )
Pins
- 18 - GPIO5/SPI_SDO
- 19 - GPIO6/SPI_S_L - chip select?
- 20 - GPIO7/SPI_SCK
- 21 - GPIO8/SPI_SDI
- 28 - GPIO0/JTAG TMS - test mode select
- 29 - GPIO1/JTAG TDI - test data input
- 30 - GPIO2/JTAG TCK - test clock
- 31 - GPIO4/JTAG TDO - test data output
- 35 - GPIO12/SPI_BOOT - if UP on power on, CPU will start from SPI
- 48 - GPIO9 and UART Rx
- 49 - GPIO10 and UART Tx (baudrate 19200)
- 67 - XPABIAS - (Analog Output) connected with EN(able) pin of external Power Amp.
- 68 - PDET - (Analog Input) connected with DET ping of external Power Amp.
JTAG
- "Before using those pins configure register “GPIO Input Enable and Value”
- (H_GP_INPT_EN_VAL) Address: 0x1000_4054.
- Bit 17 must be set to 0 that means JTAG enabled (1 means JTAG disabled)."
AR9271 devices
with internal images
ALFA Network AWUS036NHA |
Netgear DGN1000 |
TP-LINK TL-WN722N v1.x |
ThinkPenguin TPE-N150USB |
Ubiquiti Networks WiFiStation EXT |
with accessible UART
ALFA Network AWUS036NHA |
AzureWave AW-NU148 |
Microsoft Xbox 360 Internal Wireless Module (1399) |
Quanta Microsystems US305 |
Ubiquiti Networks WiFiStation |
Ubiquiti Networks WiFiStation EXT |
Table of Systems
- First seen (FCC): 2009-07-27
- Wireless adapters using this device: 47 devices
- Embedded systems using this device: 4 devices
Interface | FF | USB conn. | Antenna connector | Manuf | Manuf. mdl | Vendor ID | Device ID | Chip1 model | PHY modes | MIMO config | OUI | Est. year | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ALFA Network AWUS036NHA | USB | corded (modular) adapter | Female Mini-B | RP-SMA | AWB | WUS620C-H | 0cf3 | 9271 | AR9271 | bgn | 1x1:1 | 00:C0:CA | 2012 |
AVM FRITZ!WLAN USB Stick v2 | USB | dongle | Male A | none specified | 057c | 8403 | AR9271 | bgn | 1x1:1 | BC:05:43 | |||
AboCom WU5108 | USB | micro dongle | Male A (unshielded) | none specified | AR9271L | bgn | 1x1:1 | 2011 | |||||
Altai WA1011N-GU | USB | corded (modular) adapter | Female Micro-B | U.FL | AboCom | AR9271 | bgn | 1x1:1 | 2011 | ||||
Askey WLL6120 | USB (non-standard connector) | U.FL | AR9271 | bgn | 1x1:1 | 2009 | |||||||
Atheros AR5BUB173 | USB (non-standard connector) | module | U.FL | AR9271 | bgn | 1x1:1 | 2010 | ||||||
AzureWave AW-NU137 | USB (non-standard connector) | U.FL | 13d3 | 3327 | AR9271 | bgn | 1x1:1 | 2010 | |||||
AzureWave AW-NU138 | USB | micro dongle | Male A | none specified | AR9271 | bgn | 1x1:1 | 74:2F:68 | 2010 | ||||
AzureWave AW-NU148 | USB (non-standard connector) | module | U.FL | 0cf3 | 9271 | AR9271 | bgn | 1x1:1 | 00:19:9D | 2010 | |||
AzureWave AW-NU150 | USB | micro dongle | Male A | none specified | AR9271 | bgn | 1x1:1 | 74:2F:68 | 2010 | ||||
AzureWave AW-NU153H | Mini PCIe (USB, half) | U.FL | AR9271 | bgn | 1x1:1 | 2010 | |||||||
AzureWave AW-NU240 | USB (non-standard connector) | module | none specified | AR9271 | bgn | 1x1:1 | 2012 | ||||||
D-Link DWA-126 | USB | dongle | Male A | RP-SMA | Cameo | 07d1 | 3a10 | AR9271 | bgn | 1x1:1 | 2009 | ||
Foxconn J20H049 | USB (non-standard connector) | module | U.FL | Foxconn | AR9271 | bgn | 1x1:1 | 90:34:FC | 2010 | ||||
Lite-On WN4606A | USB (non-standard connector) | U.FL | AR9271 | bgn | 1x1:1 | 00:19:9D | 2011 | ||||||
Microsoft Xbox 360 Internal Wireless Module (1399) | USB (non-standard connector) | internal wireless module | none specified | Askey | WLU6150 | AR9271 | bgn | 1x1:1 | 24:EC:99 | 2011 | |||
Mitsumi Electric DWM-W046 | USB (non-standard connector) | U.FL | AR9271 | bgn | 1x1:1 | 2010 | |||||||
Netgear WNA1100 | USB | dongle | Male A | none specified | SerComm | 0846 | 9030 | AR9271 | bgn | 1x1:1 | 00:26:F2 00:8E:F2 2C:B0:5D 30:46:9A E0:46:9A E0:91:F5 | 2010 | |
OPPO Digital AK093 | USB | dongle | Male A | none specified | TP-LINK | AR9271 | bgn | 1x1:1 | 2010 | ||||
Onkyo UWF-1 | USB | micro dongle | Male A | none specified | Wistron NeWeb | AR9271 | bgn | 1x1:1 | 90:A4:DE | 2011 | |||
Philips PTA01 | USB | dongle | Male A | U.FL | Alpha Networks | WUS-N11 | 0471 | 209e | AR9271 | bgn | 1x1:1 | 5C:33:8E | 2010 |
Philips WUB1110 | USB | dongle | Male A | none specified | Alpha Networks | WUS-N11 | AR9271 | bgn | 1x1:1 | 5C:33:8E | 2010 | ||
Proware PW-DN421 | USB | dongle | Male A | none specified | Proware | AR9271 | bgn | 1x2:1 | 00:12:7B | 2011 | |||
Proware PW-DN4210 | USB | dongle | Male A | RP-SMA | Proware | AR9271 | bgn | 1x1:1 | 2011 | ||||
Proware PW-DN4210D | USB | dongle | Male A | RP-SMA | Proware | 0cf3 | 9271 | AR9271 | bgn | 1x1:1 | 6C:FD:B9 | 2011 | |
Proware PW-MN421 | USB (non-standard connector) | U.FL | AR9271 | bgn | 1x1:1 | 2011 | |||||||
Quanta Microsystems US305 | USB (non-standard connector) | U.FL | Quanta Microsystems | AR9271L | bgn | 1x1:1 | 00:19:9D | 2011 | |||||
Rosewill RNX-N150HG | USB | dongle | Male A | RP-SMA | TP-LINK | 0cf3 | 9271 | AR9271 | bgn | 1x1:1 | 68:1C:A2 | 2011 | |
SMC SMCWUSBS-N4 | USB | dongle | Male A | none specified | TP-LINK | AR9271 | bgn | 1x1:1 | 2012 | ||||
Sharp VR-WL25 | USB | micro dongle | Male A | none specified | Wistron NeWeb | AR9271 | bgn | 1x1:1 | 90:A4:DE | 2010 | |||
Shenzhen Kingnet Technology K2-364 | USB (non-standard connector) | U.FL | AR9271 | bgn | 1x1:1 | 2011 | |||||||
Shenzhen Kingnet Technology K2-544DW | USB | dongle | Male A (unshielded) | none specified | AR9271 | bgn | 1x1:1 | 2011 | |||||
Silex SX-USBGN | USB | module (no casing) | Male A | none specified | Alpha Networks | WUS-N11 | AR9271 | bgn | 1x1:1 | 2012 | |||
Sony IFU-WLM3 | USB | micro dongle | Male A | none specified | Wistron NeWeb | DNUA-93FS | AR9271 | bgn | 1x1:1 | 2012 | |||
SparkLAN WUBA-171GN | USB (non-standard connector) | U.FL | AR9271 | bgn | 1x1:1 | 2013 | |||||||
TP-LINK TL-WN322G v3 | USB | dongle | Male A | none specified | 0cf3 | 1006 | AR9271 | bg | |||||
TP-LINK TL-WN422G v2 | USB | dongle | Male A | RP-SMA | 0cf3 | 1006 | AR9271 | bg | 54:E6:FC | ||||
TP-LINK TL-WN721N | USB | dongle | Male A | none specified | 0cf3 | 9271 | AR9271 | bgn | 1x1:1 | 2009 | |||
TP-LINK TL-WN722N v1.x | USB | dongle | Male A | RP-SMA | 0cf3 | 9271 | AR9271L | bgn | 1x2:1 | D8:5D:4C E8:94:F6 | 2009 | ||
Tehnoetic TET-N150 | USB | micro dongle | Male A | none specified | Unex | DNUA-93F | 0cf3 | 9271 | AR9271L | bgn | 1x2:1 | 2010 | |
Tehnoetic TET-N150HGA | USB | dongle | Male A | RP-SMA | TP-LINK | TL-WN722N | 0cf3 | 9271 | AR9271L | bgn | 1x2:1 | 2009 | |
ThinkPenguin TPE-N150USB | USB | micro dongle | Male A | none specified | Wistron NeWeb | DNUA-93F | 0cf3 | 9271 | AR9271L | bgn | 1x2:1 | 2013 | |
ThinkPenguin TPE-N150USBL | USB | corded (modular) adapter | Female Mini-B | RP-SMA | AR9271 | bgn | 1x1:1 | ||||||
Ubiquiti Networks WiFiStation | USB | corded (modular) adapter | Female B | none | 0cf3 | b002 | AR9271 | bgn | 1x1:1 | 00:15:6D 00:27:22 | 2010 | ||
Ubiquiti Networks WiFiStation EXT | USB | corded (modular) adapter | Female Micro-B | RP-SMA | 0cf3 | b003 | AR9271 | bgn | 1x1:1 | 00:15:6D 00:27:22 | 2010 | ||
Unex DNUA-93 | USB | none specified | 0cf3 | 9271 | AR9271 | bgn | 1x1:1 | ||||||
Unex DNUA-93F | USB | micro dongle | Male A | none specified | 0cf3 | 9271 | AR9271 | bgn | 1x2:1 | ||||
VIA VNT9271BB05B | USB (non-standard connector) | U.FL | AboCom | AR9271 | bgn | 1x1:1 | 2012 | ||||||
Wistron NeWeb DNUA-93C2 | USB (non-standard connector) | U.FL | AR9271 | bgn | 1x1:1 | 2012 | |||||||
Wistron NeWeb DNUA-93F | USB | micro dongle | Male A | none specified | 0cf3 | 9271 | AR9271 | bgn | 1x1:1 | 2010 | |||
Wistron NeWeb DNUA-93S | USB (non-standard connector) | module | U.FL | AR9271 | bgn | 1x1:1 | 00:0B:6B | 2011 | |||||
Z-Com ZCN-722M | USB (non-standard connector) | U.FL | Z-Com | AR9271 | bgn | 1x1:1 | 00:19:70 | 2011 | |||||
Zcomax XN-723M | USB (module) | module | non-standard connector | U.FL | Zcomax | AR9271 | bgn | 1x1:1 |