TI 公司的CC8520 & CC8530是2.4 GHz RF SoC，是無線數字音頻流PurePath平臺。用于高質量的數字音頻的無線傳輸，器件內置了無線音頻傳輸協議，可控制所選擇的外部設備。本文介紹了CC8520 & CC8530主要特性，方框圖，應用電路以及無線耳機基本應用框圖，主控器工作系統框圖和CC85xx 開發套件主要特性和詳細電路圖。
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：
應用：
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
內置音頻協議：
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
外接系統：
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
圖1。CC8520 & CC8530方框圖
圖2。CC8520/CC8530應用電路
圖3。無線耳機基本應用框圖
圖4。帶主控的無線耳機基本應用框圖
圖5。自治的無線耳機基本應用框圖
圖6。主控器工作系統框圖
CC85xx 開發套件
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 開發套件目標應用：
wireless audio signal cable replacement
wireless headphones
wireless subwoofer
Features
PurePath 無線CC85xxDK開發套件包括：
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
圖7。CC85xx 開發套件外形圖
圖8。CC85xx 開發套件電路圖（1）
圖9。CC85xx 開發套件電路圖（2）
圖10。CC85xx 開發套件電路圖（3）
圖11。CC85xx 開發套件電路圖（4）
圖12。CC85xx 開發套件電路圖（5）
圖13。CC85xx 開發套件電路圖（6）
詳情請見：
http://focus.ti.com/lit/ds/symlink/cc8530.pdf
和
http://focus.ti.com/lit/ug/swru251/swru251.pdf
以及
http://focus.ti.com/lit/ug/swru250f/swru250f.pdf
