Qualcomm® BlueCore™ Audio Platform CSR8640 Bluetooth dual-mode ROM audio System on Chip (SoC) Bluetooth® audio ROM platform with Qualcomm® cVc™ technology for entry level to mid-range audio products Solution Highlights The CSR8640 offers various capabilities found in the CSR8670 SoC, including cVc voice processing technology in a ROM-based package, ideal for entry-level to mid-range wireless audio products with support for voice and music. The CSR8640 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 CSR8640 supports Bluetooth Advanced Audio Distribution Profile (A2DP) decoding and cVc audio processing technology to deliver high quality voice and music capabilities in a cost-efficient ROMbased single-chip package. The battery charger architecture enables the CSR8640 BGA to operate independently from the charger supply, ensuring dependable operation for all battery conditions. The CSR8640 is an easy and cost-effective platform for developing wireless audio products and supports reduced development time. It is ideal for stereo headphones, speakers, speakerphones and headsets. Qualcomm BlueCore, Qualcomm cVc, and CSR8640 are products of Qualcomm Technologies International, Ltd. Ideal for entry-level to mid-range wireless audio products The CSR8640 SoC has a reduced feature set supporting the essential features expected from Bluetooth audio products while providing cost efficiency for entry-level products. 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 required Pre-loaded Bluetooth and audio applications allow manufacturers to develop end-products without writing code, while customization tools support quick modification of device behaviour and user interface. cVc 6th generation 2-mic audio technology 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 Bluetooth headsets, handsets, hands-free devices, and automotive. This material is subject to change without notice. CSR8640_PB_0217A Bluetooth Audio Applications Speakerphones Stereo Speakers Stereo Headphones Features Stereo Headsets Earbuds Soundbars CSR8640 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 applications £ £ 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 £ MP3, AAC and SBC audio codecs CSR8640 Specifications GAIA V1 and associated Android and iOS apps for connectivity with mobile devices Bluetooth £ £ Reference speaker and headset applications pre-loaded on the ROM MCU Fast charging support up to 200mA with no external components Audio Integrated dual-mode radio and balun (50 Ω) -92dBm (typical) receiver sensitivity; +9dBm transmitter power Bluetooth v4.0 firmware £ £ 80MHz non-programmable RISC processor for application code and user interface Integrated non-programmable 24-bit fixed-point 80MHz Kalimba DSP Pin compatible with CSR8645 £ Product Part Number CSR8640 BGA CSR8640A04-IBBC-R CSR8640 BGA Dev Kit DK-8640-10061-2A CSR8640 BGA Dev Board DB-8640-10085-1A Battery Support & Power Management Audio Interfaces Physical Interfaces To learn more visit: qualcomm.com or developer.qualcomm.com Memory Packaging Li-Ion battery charger with support up to 200mA 2x high-efficiency switch-mode regulators with 1.8V & 1.35V outputs from battery supply 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, 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.