The SOM-9331 is a complete, small form factor and surface mountable System-On-Module (SOM) that is optimized for low-cost, low-power and highly integrated networking devices. The module supports a full spectrum of functionality on a 39×25×2mm PCB design, requiring only a 3.3V power supply. It features the AR9331 MIPS 24K SoC, which is accompanied by a 64MByte DDR2 memory and 16MB SPI NOR Flash as a boot device. The SoC provides a complete CPU infrastructure, with a variety of connectivity interfaces: besides WAN/LAN, USB, SPI and SPDIF interfaces, the SOM includes a fully functional Wifi core that complies with the IEEE 802.11 b/g/n with internal PA and LNA. Further, it supports IEEE 802.11 b/g at standard data rates and IEEE 802.11n operations up to 7.2Mbps and 150Mbps for for 20MHz and 40MHz channels, respectively. The module is compatible with Linux operating systems and can run OpenWrt.
The SoC has many interface options, which are multiplexed on the connection pins. As a result, this yields a lot of available function; however, not all of them can be utilised in the same configuration. The specifications below name the number of functions in a typical configuration, as well as the maximum number of usable ones in certain setups. OEM/ODM customers can get support in developing their own carrier board for the target application using proven interface designs.
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