Integrated Bluetooth® audio ROM platform with Qualcomm® aptX™ audio and Qualcomm® cVc™ noise cancellation technology.
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The CSR8645 dual-mode ROM audio SoC 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 costefficient 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.
High performance audio with aptX technology
aptX audio technology supports high-quality wireless audio, bringing pro-audio quality to consumer electronic devices.
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.
Features
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Bluetooth 4.0 specification compliant
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Flexible ROM-based platform with fully configurable MMI and tool chain
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Support for various profiles including: HFP 1.6, A2DP 1.2 AVRCP 1.4
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80MHz Qualcomm® Kalimba™ DSP with integrated multipoint A2DP and HFP audio applications
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2-mic cVc 6th Generation voice processing technology with wideband speech
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Audio tuning suite with audio enhancements and 5-band EQs
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Internal ROM, serial flash memory and EEPOM interfaces
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aptX, MP3, AAC and SBC audio codecs
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GAIA V1 and associated Android and iOS apps for connectivity with mobile devices
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Reference speaker and headset applications pre-loaded on the ROM
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Fast charging support up to 200mA with no external components
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Pin compatible with CSR8640
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 Version: USB 2.0 (Full Speed)
USB Support: Supports USB charger detection
General Audio
Audio Technology: HD Voice, Voice recognition technology, Qualcomm® aptX™ audio technology, Qualcomm® cVc™ audio technology, Talk-Time Extension
Equalizer: 5-band EQ
HFP multipoint support: 2 handsets
Audio Recording
Microphone: 2 analog mics, 1 microphone bias generator, 2 digital mics
Power Management
Maximum Input Voltage: 3.3V
Charging
Maximum Current: 200 mA on chip, 500 mA with external transistor
Memory
RAM: 56 KB 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: VFBGA
Pitch: 0.5mm Pitch
Package Size: 5.5 x 5.5 x 1 mm
