Bluetooth® audio ROM platform with Qualcomm® cVc™ noise cancellation technology for entry level to mid-range audio devices.
The CSR8640 dual-mode ROM audio SoC offers various capabilities found in the CSR8670 SoC, including cVc noise cancellation 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 ROM-based 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.
CSR8640, Qualcomm cVc and Qualcomm Kalimba are products of Qualcomm Technologies, Inc., and/or its subsidiaries.
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.
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.
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 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.
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
GAIA V1 and associated Android and iOS apps for connectivity with mobile devices
Reference speaker and headset applications pre-loaded on the ROM
Fast charging support up to 200mA with no external components
Pin compatible with CSR8645
DSP Technology: Qualcomm® Kalimba™ DSP
MCU Clock Speed: 80MHz MCU
Bluetooth Version: Bluetooth 4.1
Bluetooth Profiles: HFP v1.6, AVRCP v1.4, A2DP v1.2, DI v1.3, HSP v1.2
A2DP multipoint support: 2 A2DP sources
Bluetooth Radio: Up to +9dBm output power (typical), -92dBm receiver sensitivity (basic rate, typical)
USB Version: USB 2.0 (Full Speed)
USB Support: Supports USB charger detection
Audio Technology: HD Voice, Voice recognition technology, Qualcomm® cVc™ audio technology, Talk-Time Extension
Equalizer: 5-band EQ
HFP multipoint support: 2 handsets
Microphone: 2 analog mics, 1 microphone bias generator, 2 digital mics
Maximum Input Voltage: 3.3V
Maximum Current: 200 mA on chip, 500 mA with external transistor
RAM: 56 KB RAM
Supported Interfaces: I²S, I²C, PCM, SPI, UART, USB 2.0
ADC: 2 ADCs
DAC: 1 DAC
Maximum PIOs: 22
PWM (LED): 3
Package Type: VFBGA
Pitch: 0.5mm Pitch
Package Size: 5.5 x 5.5 x 1 mm