CSR8645 - Qualcomm

CSR8645 - Qualcomm
Qualcomm® BlueCore™
Audio Platform
Bluetooth dual-mode ROM
audio System on Chip (SoC)
The CSR8645 is designed to offer extensive
voice and music capabilities in a ROM-based
package, including aptX and cVc, making it
ideal for a variety of wireless audio products
with support for voice and music.
The CSR8645 is part of the CSR86xx portfolio,
a range of silicon platforms for wireless audio
applications which integrate a dual-mode Bluetooth
radio, a low power DSP, an application processor,
a battery charger, memory and various audio and
hardware interfaces into a single-chip solution.
Developed for entry-level to mid-range wireless
audio devices, the CSR8645 SoC supports cVc voice
processing technology and aptX codec technology to
deliver high quality voice and music capabilities in a
cost-efficient ROM-based single-chip package.
The CSR8645 is an easy and cost-effective platform
for developing wireless audio products and supports
reduced development time. It is an ideal solution for
a range of highly differentiated home entertainment
and wearable audio products including stereo
headphones, speakers, speakerphones, headsets
and hands-free devices.
Integrated Bluetooth® audio ROM
platform with Qualcomm® aptX™
and Qualcomm® cVc™ audio technology
Solution Highlights
High performance audio with
aptX technology
aptX audio technology supports high-quality wireless
audio, bringing pro-audio quality to consumer electronic
Integrated single-chip solution
for smaller designs
Application processor, Bluetooth and Bluetooth low
energy radios, DSP and memory integrated into a single
SoC helps reduce system complexity and eBOM while
supporting small form factor designs.
No software development
Pre-loaded Bluetooth and audio applications support
development of end-products without writing code, while
customization tools support quick modification of device
behavior and user interface.
cVc 6th generation 2-mic audio
cVc technology is a suite of algorithms designed to work
on the transmit and receive path of voice calls to deliver
optimum voice quality on various Bluetooth headsets,
handsets and hands-free devices.
Qualcomm BlueCore, Qualcomm cVc,, Qualcomm aptX and CSR8645 are products of Qualcomm Technologies International, Ltd.
This material is subject to change without notice.
Bluetooth Audio Applications
Stereo Speakers
Stereo Headphones
Stereo Headsets
CSR8645 Block Diagram
Bluetooth 4.0 specification compliant
£ Flexible ROM-based platform with fully
configurable MMI and tool chain
£ Support for various profiles including:
HFP 1.6, A2DP 1.2 AVRCP 1.4
£ 80MHz Qualcomm® Kalimba™ DSP with
integrated multipoint A2DP and HFP audio
£ £
2-mic cVc 6th Generation voice processing
technology with wideband speech
Audio tuning suite with audio
enhancements and 5-band EQs
£ Internal ROM, serial flash memory and
EEPOM interfaces
£ aptX, MP3, AAC and SBC audio codecs
CSR8645 Specifications
GAIA V1 and associated Android and iOS
apps for connectivity with mobile devices
£ £ Integrated dual-mode radio and balun (50 Ω)
-92dBm (typical) receiver sensitivity; +9dBm transmitter power
Bluetooth v4.0 firmware
Reference speaker and headset
applications pre-loaded on the ROM
Fast charging support up to 200mA with
no external components
Integrated non-programmable 24-bit fixed-point
80MHz Kalimba DSP
Battery Support &
Power Management Li-Ion battery charger with support up to 200mA
2x high-efficiency switch-mode regulators with
1.8V & 1.35V outputs from battery supply
£ £
80MHz non-programmable RISC processor
for application code and user interface
Pin compatible with CSR8640
£ Product
Part Number
CSR8645 BGA Dev Kit
CSR8645 BGA Dev Board
Audio Interfaces
Physical Interfaces
To learn more visit:
qualcomm.com or
Packaging Stereo 16-bit ADC; up to 48kHz sampling frequency
Stereo 16-bit DAC; up to 96kHz sampling frequency
Microphone inputs: up to 2x analog or digital (MEMS)
I2S and PCM interfaces
Up to 22x GPIOs, USB2.0, I2C, SPI, UART
3x hardware LED controllers
Integrated ROM memory
56kB system MCU RAM
64k x 24-bit data & 12k x 32-bit program memory dedicated to DSP
5.5 x 5.5 x 1mm, 0.5mm pitch 68-ball VFBGA
Qualcomm Kalimba is a product of Qualcomm Technologies International, Ltd.
©2017 Qualcomm Technologies International, Ltd. All Rights Reserved. Qualcomm is a trademark of Qualcomm Incorporated, registered in
the United States and other countries. CSR, BlueCore, aptX, cVc and Kalimba are trademarks of Qualcomm Technologies International, Ltd.,
registered in the United States and other countries. The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth
SIG, Inc. and any use of such marks by Qualcomm Technologies International, Ltd. is under license. Other products and brand names may be
trademarks or registered trademarks of their respective owners.
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