Doc Title Wireless smart audio module
Number
WMB20150921
Document No.: WMB20150921 Page 5 of 21
1．Overview
LinkPlay Wi-Fi Audio module A31, is our second generation smart audio modules developed to be used in
wireless speaker, wireless docking station, Wi-Fi base station, home automation and smart toy. It supports
802.11b/g/n standard with up to 300Mbps bandwidth. It could work at AP, AP client or station modes. It is fully
compatible with Apple AirPlay and digital living network alliance (DLNA) streaming standards. It supports Hi-Fi
audio up to 192KHz, 24-bit with most popular audio formats. It supports multi-room and multi-channel audio
streaming with perfect synchronization.
With this module, you can play the music on your speaker wirelessly from iPhone, iPad, iPod touch, Android
devices or PC. More important, it enables the traditional speaker system to become the Internet enabled device
through the wired or wireless connection provided by the module. Thus, you could freely playback any Internet
audio contents such as music, podcast, radio or either the accompany audio in the movie directly from the Internet.
1.1. Parameters
Items Performance
Wireless
Certification FCC/CE/Reach/RoHS
Standard 802.11 b/g/n 1T1R
Frequency 2.412GHz-2.484GHz
Transmit
802.11b: 20±1dBm
802.11g: 17.5±1dBm
802.11n: 17.5±1dBm
Receive sensitivity
802.11b: < -85dBm
802.11g: < -75dBm
802.11n(HT20): < -71dBm(MCS0)
802.11n(HT40): < -68dBm(MCS7)
Antenna options
External：I-PEX
Hardware
Work voltage 3.5V ~ 5.5V
Work current 130 mA ~ 320 mA
Peak current 320 mA
Standby current 20 mA
Work temperature 0℃ - 40℃
Storage temperature -5℃ - 45℃
Status LED AP status, client status, power, Wi-i data transfer
I2S input/output 24 bit, up to 192KHz
Wi-Fi distance 80 meters
IO extension Ethernet, USB, UART, GPIO, I2C
Size 38.7mm x 28.5mm 36-pin DIP
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