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DWM-AR9331 A minimal OpenWrt Linux system Core module for mini routers and IoT solution

DWM21031502

The DWM-AR9331 is a minimal system which installed with OpenWrt Linux system and support 2.4G WiFi It is compatible with 802.11b/g/n.widely use as an IoT gateway core modules.

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Description

The DWM-AR9331  is a minimal system which installed with OpenWrt Linux system and support 2.4G WiFi It is compatible with 802.11b/g/n has rich interface such as Ethernet, USB, UART and plenty of GPIOs and use small outline package, it is used widely in mini routers and IoT projects.

Specification

  • CPU: ATHEROS AR9331 chipset, which integrates MIPS 24Kc processor, CPU 400MHz, Switch (MAC, PHY) and integrates with MAC, RF, PA and LNA for WiFi. 
  • RAM : 64MB;
  • Flash : 16MB
  • Interfaces: 2 x RJ45, 1 x USB Host, 1 x UART, USB2.0, SPI, I2S, SLIC, SPDIF, JTAG, 4xLEDs and 19 GPIOs
  • OS: Open Source OpenWrt 
  • Power: 3.3v power input
  • WiFi: Support 150M 2.4Ghz WiFi, 802.11 b/g/n
  • Frequency range: 2.4~2.4835GHz
  • Modulation: BPSK, QPSK, CCK and OFDM (BPSK/QPSK/16-QAM/ 64-QAM)
  • Sensitivity @PER : 135M : -65dBm@10%PER; 65M : -65dBm@10%PER; 54M : -68dBm@10%PER; 11M : -84dBm@8% PER; 6M : -88dBm@10% PER; 1M : -90dBm@8% PER
  • Typical Distance: Indoor: 60m (max); Outdoor 150m (max) (with 2 dBi antenna) 
  • RF Power: 11n: 13dBm; 11g: 13-15dBm, 11b: 16-18dBm,
  • Connector: I-PEX connector. Provide Optional ANT pin out for SMT
  • Dimension:39x23x8.5mm

 Pin definition

Pin Number Pin Name  Pin Description
1
VDD33
DC 3.3V
2 VDD33
DC 3.3V
3 GND Ground
4 GND Ground
5
GPIO26
 standard GPIO Port
6
GPIO12
 standard GPIO Port
7 GPIO27 standard GPIO Port , SYSTEM LED
8
GPIO11
 Internal 10K drop-down resistor to ground, default WIRELESS LED function, high-level effective
9
GPIO17
 Internal 10K pull-up resistor to 2.6 v, default to Wan LED function, low level effective
10
GPIO16
 Internal 10K pull-down resistor to ground, standard GPIO Port
11 GND  Ground
12
GPIO15
 INTERNAL 10K drop-down resistance to ground, default RESET/FACTORY NEW KEY function, high-level effective
13 GPIO14 Internal 10K pull-down resistor to ground, standard GPIO Port
14
GPIO13
 Internal 10K pull-up resistor to 2.6 v, default LAN1 LED function, low-level effective.
15
GPIO01
 Internal 10K pull-up resistor to 2.6 v, standard GPIO Port
16
GPIO00
 INTERNAL 10K drop-down resistance to ground, standard GPIO Port
17 GND Ground
18
UART_RX
 Serial RX (for general debugging)
19 UART_TX Serial TX (for general debugging)
20
GPIO20
 Standard GPIO Port or I2S SD pin function, default to GPIO
21 GPIO19 Standard GPIO Port or I2S WS pin function, default to GPIO
22 GPIO18 Standard GPIO Port or I2S CK pin function, default to GPIO
23 GPIO21 Standard GPIO Port or I2S MCK pin function, default to GPIO
24 GPIO22 Standard GPIO Port or I2S MICIN pin function, default to GPIO
25 GND  Ground
26 RX4_P Ethernet port 4 receiving positive end
27
RX4_N
 Ethernet port 4 receiving negative end
28
TX4_P
 Ethernet port 4 transmitting positive end
29
TX4_N
 Ethernet port 4 transmitting negative end
30
VDD20
 Ethernet Power supply
31
RX0_P
 Ethernet port 0 receiving positive end
32
RX0_N
 Ethernet port 0 receiving negative end
33
TX0_P
 Ethernet port 0 transmitting positive end
34
TX0_N
 Ethernet port 0 transmitting negative end
35 GND Ground
36
USB_N
 USB negative port
37
USB_P
 USB positive  port
38 GND Ground


Applications: 

  • Internet of Things
  • Voice over IP
  • Mesh WiFi
  • 3G/4G router
  • Industrial Control

 

Useful Link:

Product Details
DWM21031502
297 Items
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DWM-AR9331 A minimal OpenWrt Linux system Core module for mini routers and IoT solution

The DWM-AR9331 is a minimal system which installed with OpenWrt Linux system and support 2.4G WiFi It is compatible with 802.11b/g/n.widely use as an IoT gateway core modules.

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