CSR8640 Chipset
Bluetooth® audio ROM platform with Qualcomm® cVc™ Noise Cancellation Technology for entry level to mid-range audio devices.
Bluetooth® audio ROM platform with Qualcomm® cVc™ Noise Cancellation Technology for entry level to mid-range audio devices.
CSR8640, Qualcomm cVc and Qualcomm Kalimba are products of Qualcomm Technologies, Inc., and/or its subsidiaries.
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Product Brief
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.
CSR8640 Block Diagram
Features
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
Specifications
DSP
DSP Technology: Qualcomm® Kalimba™ DSP
MCU
MCU Clock Speed: 80MHz
Bluetooth
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
USB Support: Supports USB charger detection
USB Version: USB 2.0 (Full Speed)
General Audio
Audio Technology: HD Voice, Qualcomm® cVc™ audio technology, Talk-Time Extension, Voice recognition technology
Analog Microphone Input: 2 analog mics
Digital Microphone Input: 2 digital mics
Microphone Bias Generator: 1 microphone bias generator
Equalizer: 5-band EQ
HFP multipoint support: 2 handsets
Power Management
Maximum Input Voltage: 3.3V
Charging
Maximum Current: 200 mA on chip, 500 mA with external transistor
Memory
RAM: 56KB RAM
Interface
Supported Interfaces: I²S, I²C, PCM, SPI, UART, USB 2.0
Input/Output
ADC: 2 ADCs
DAC: 1 DAC
Maximum PIOs: 22
PWM (LED): 3
Package
Package Type: 5.5 x 5.5 x 1 mm 0.5 mm pitch VFBGA