APPLICATIONS
- Wireless high-quality digital audio
- Wireless point-to-point audio link
- Wireless (USB) headphones / headsets
- Wireless (USB) loudspeakers
- Wireless (USB) microphones
- Wireless 2.1 speaker systems
- CC852x supports up to 2 channels
- CC853x supports up to 4 channels
- CC85x1 supports USB

FEATURES
Built-in audio protocol
- 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
External system
- Can be used autonomously, or can be
controlled by an external host MCU for
greatest flexibility
- Seamless connection and control of
external audio codecs, DACs/ADCs and
digital audio amplifiers using I2S and I2C
- HID functions like power control, pairing,
volume control, audio channel selection
etc. can be mapped to I/Os
- RoHS compliant 6mm x 6mm QFN-40
package
RF section
- 5 or 2 Mbps over-the-air data rate
- Bandwidth-efficient modulation format
- Excellent link budget with programmable
output power up to +3.5 dBm and -83/-86
dBm sensitivity
- Seamless support for CC2590 range
extender (+11dBm output power, -87dBm
sensitivity)
- Suited for systems targeting compliance
with worldwide radio frequency
regulations: ETSI EN 300 328 and EN
300 440 class 2 (Europe), FCC CFR47 Part
15 (US) and ARIB STD-T66 (Japan)
Digital audio support
- Digital I2S audio interface supports 1 or 2
audio channels for the CC8520 and 1 to 4
audio channels for the CC8530 at sample
rates of 32, 40.275, 44.1 and 48 kHz, and
supports 16 and 24 bit word-widths
- USB audio support for 32, 44.1 and 48 kHz,
and supports 16 and 24 bit word-widths
- Audio latency down to 10.7 ms
- Data side-channel allows data to be sent
alongside the audio between external host
processors
USB
- Full-speed USB Audio device
- USB Basic Audio Device Class: HT1, HS1
and MT topologies (headphone, headset
and microphone)
- USB Audio Device Class.
- Basic USB HID device class support for
remote control, mouse and keyboard
functionality
- Autonomous operation only.
Development tools
- PC-based PurePath™ Wireless
Configurator for CC85xx configuration
- CC85xx Family User Guide
- CC85XXDK audio development kit
- CC85XXDK-HEADSET development kit

DESCRIPTION
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].