CSR8640

CSR8640

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 ....

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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 ....

more

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 wh....

more

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 solutio....

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CSR8640, Qualcomm cVc and Qualcomm Kalimba are products of Qualcomm Technologies, Inc., and/or its subsidiaries.

Product license agreement

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: 80 MHz

Bluetooth

Bluetooth Specification Version: Bluetooth 4.1

Standard Profiles: Bluetooth Hands-Free Profile (HFP) 1.6, Bluetooth Audio/Video Remote Control Profile (AVRCP) 1.4, Bluetooth Advanced Audio Distribution Profile (A2DP) 1.2, Bluetooth Device ID Profile (DIP) 1.3, Bluetooth Headset Profile (HSP) 1.2

Links: Dual eSCO, Dual A2DP

Receiver Sensitivity (basic rate, typical): -92 dBm

Maximum Output Power (typical): Up to 9 dBm

USB

USB Version: USB 2.0 (Full Speed)

USB Support: Supports USB charger detection

Voice Services

Digital Assistant Activation:

Audio

Other Audio Capturing Technologies: HD Voice, Talk-Time Extension

Other Audio Processing: 5-band EQ

Qualcomm® cVc™ Echo Cancellation and Noise Suppression (ECNS) technology: Qualcomm® cVc™ Echo Cancellation and Noise Suppression

Power Management

Maximum Input Voltage: 3.3 V

Charging

Maximum Current: 200 mA on chip, 500 mA with external transistor

Memory

RAM: 56 KB RAM

Interfaces

Supported Interfaces: I²S, I²C, PCM, SPI, UART, USB 2.0

Input/Output

Analog-To-Digital Converter (ADC): 2 ADCs

Digital-To-Analog Converter (DAC): 1 DAC

Maximum PIOs: 22

Pulse-Width Modulation (PWM) (LED): 3x

Audio Recording Interfaces

Microphone: 2 analog mics, 1 microphone bias generator, 2 digital mics

Package

Package Type: VFBGA

Pitch: 0.5mm Pitch

Size: 5.5 x 5.5 x 1 mm

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    Chipset
    Receiver Sensitivity (basic rate, typical)MCU Clock SpeedOther Audio Capturing TechnologiesMicrophonePackage TypeSize
    -92 dBm
    80 MHz
    HD Voice
    Talk-Time Extension
    2 analog mics
    1 microphone bias generator
    2 digital mics
    VFBGA
    5.5 x 5.5 x 1 mm
    -92 dBm
    80 MHz
    HD Voice
    Talk-Time Extension
    2 analog mics
    1 microphone bias generator
    2 digital mics
    VFBGA
    5.5 x 5.5 x 1 mm
    -91 dBm
    80 MHz
    Talk-Time Extension
    QFN
    8 x 8 x 0.9 mm
    -91 dBm
    80 MHz
    Talk-Time Extension
    QFN
    8 x 8 x 0.9 mm
    -92 dBm
    80 MHz
    HD Voice
    Talk-Time Extension
    2 analog mics
    1 microphone bias generator
    2 digital mics
    VFBGA
    5.5 x 5.5 x 1 mm
    -91 dBm
    80 MHz
    Talk-Time Extension
    1 analog mic
    1 digital mic
    QFN
    8 x 8 x 0.9 mm
    -92 dBm
    80 MHz
    Talk-Time Extension
    1 analog mic
    1 microphone bias generator
    1 digital mic
    VFBGA
    WLCSP
    3.92 x 3.68 x 0.6 mm 1
    5.5 x 5.5 x 1 mm 2
    -91 dBm
    80 MHz
    Talk-Time Extension
    8 x 8 x 0.9 mm
    1. WLCSP
    2. VFBGA

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