原标题：TI CC85xx无线数字音频流PurePath解决方案

　　TI 公司的CC8520 & CC8530是2.4 GHz RF SoC，是无线数字音频流PurePath平台。用于高质量的数字音频的无线传输，器件内置了无线音频传输协议，可控制所选择的外部设备。本文介绍了CC8520 & CC8530主要特性，方框图，应用电路以及无线耳机基本应用框图，主控器工作系统框图和CC85xx 开发套件主要特性和详细电路图。

　　2.4 GHz RF SoC FOR WIRELESS DIGITAL AUDIO STREAMING CC8520 & CC8530 - PurePath™ Wireless

　　The PurePath™ Wireless platform is a cost-effective and low-power solution optimized for wireless transmission of high-quality digital audio.

　　The CC85xx includes a robust built-in wireless audio transmission protocol and can control selected external audio devices. Utilizing numerous coexistence mechanisms allows the CC85xx to avoid interfering with, or being interfered by other 2.4 GHz radio systems.

　　The CC85xx operates autonomously, and can be used with or without an external MCU. An external host processor can be connected through SPI and control some aspects of its operation. The CC85xx interfaces easily with other TI audio ICs and DSPs (using I2S and DSP/TDM interfaces). More details can be found in the CC85xx Family User Guide [2].

　　CC8520 & CC8530主要特性：

　　应用：

　　Wireless high-quality digital audio

　　Wireless point-to-point audio link

　　Wireless headphones

　　Wireless loudspeakers

　　Wireless 2.1 speaker systems

　　CC8520 supports up to 2 channels

　　CC8530 supports up to 4 channels

　　内置音频协议：

　　CD-quality uncompressed audio

　　Excellent robustness and co-existence through multiple techniques

　　Adaptive Frequency Hopping

　　Forward Error Correction

　　Buffering and Retransmission

　　Error Concealment

　　Optional high quality audio compression

　　No software development needed when used in autonomous mode

　　外接系统：

　　Can be used autonomously, or can be controlled by an external host MCU for greatest flexibility

　　Seamless connection and control of selected TI audio codecs, DACs/ADCs and digital audio amplifiers using I2S and I2C

　　图1。CC8520 & CC8530方框图

　　图2。CC8520/CC8530应用电路

　　图3。无线耳机基本应用框图

　　图4。带主控的无线耳机基本应用框图

　　图5。自治的无线耳机基本应用框图

　　图6。主控器工作系统框图

　　CC85xx 开发套件

　　CC85XXDK will let the user fully evaluate PurePath Wireless technology and the CC8520 for wireless audio applications. Audio interfaces available with the kit include S/PDIF optical + coax input/output, line input/output, headphone output and microphone input. A TLV320AIC3101 audio codec is mounted on the PurePath Wireless Audio Evaluation Board, which also has connectors compatible with other TI Codecs. CC85XXDK works with PurePath Wireless Configurator PC tool which helps designers configure and test PurePath Wireless Audio devices.

　　CC85xx 开发套件目标应用：

　　wireless audio signal cable replacement

　　wireless headphones

　　wireless subwoofer

　　Features

　　PurePath 无线CC85xxDK开发套件包括：

　　2 x PurePath Wireless Audio Evaluation Boards

　　2 x CC85XXEM RF Evaluation Modules

　　2 x CC85XX-CC2590EM RF Evaluation Modules

　　2 x 2.4GHz antennas

　　1 x CC Debugger

　　2 x Mini USB cable

　　1 x Mini Jack to RCA male audio cable

　　1 x RCA male to RCA male audio cable

　　Documentation

　　Either a CC85XXEM or a CC85XX-CC2590EM RF Evaluation Board can be plugged onto the PurePath Wireless Audio Evaluation B

　　图7。CC85xx 开发套件外形图