完美无线2.4G音频传输方案

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基于SYNIC 的IA2 2.4G无线音频传输模块解决方案，此无线音频模块声音响应频率为20Hz至20KH，而且不需要安装任何软件可以通过I2S 与USB接口连接到 iPod、PMP、手机或笔记本电脑，且一台发射端，可以同时把声音传到几百个接收端；利用这一技术生可产仿杜比的耳机，不但成本低廉，声音仍然为高保真的效果，戴上耳机，让你有着置身于电影院的感觉；此技术方案，也可应用于各种无线音箱系统，如TV无线音箱，PC无线音箱，car 无线音箱等；以及应用于KTV的小话筒等等；
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 IA2无线音频模块其中一些主要的参数如下：
 一  RF Features:
 
IA2 Wireless Audio Module 
? Worldwide 2.4 GHz ISM band operation by 2406 MHz ~ 2472MHz.
? Up to 2 Mbps RF data rate
? GFSK modulation.
? Long distance > 50m (Line of sight)
? Broadcasting mode
? RF frequency hopping in 34 channels;
? Embedded uP/MAC mode settings IA2 RF normal operation mode that support 15 hopping channel/Per  Sequence.  It's  included  4  Sequence  group/per  system. 
? According FHSS specification protocol.

二   Audio Quality and Interface:
Support Compressed audio
Analog output: THD+N up to -60dB, SNR up to 92dB.
Support I2S (Audio In/Out) and USB (Tx Audio Input) with 2 channels downstream.
Support I2S downstream 32/44.1/48KHz at resolution of 16 bits (2 channels).
IA2 wireless audio module that support in master mode for Tx and Rx audio interface.
USB  1.1  device  controller,  Supports  LPCM  and  compressed  format  at  16-bit  2-channels  at sampling frequency of 32, 44.1, and 48KHz downstream.
 Control Channel (CCH) up to 2 kbps for downstream by I2C interface via wireless.

三   General Features:
Programmable audio latency 20ms/50ms
Integrated pipelined 8-bit CPU, with embedded 4K bytes program RAM, with embedded RFIC
in IA2 audio processor.
Serial 4K byte EEPROM for Boot Register Update.
　 I2C interface support blank EEPROM code download, External I2C device read/write, and data exchange with external MCU (By IA2 EVB).
 四     Tx Charging Features (Option):
Support Rechargeable ? AAA? size Ni-MH battery for 900mAH to 1000mAH capacity by Tx module internal charging circuit and firmware control.