CSR BlueCore CSR8640 BGA, User Manual

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Features
BlueCore
®
CSR8640™ BGA
■ 80MHz RISC MCU and 80MIPS Kalimba DSP
■ Internal ROM, serial flash memory and EEPROM
interfaces
■ Stereo codec with 2 microphone inputs
■ Radio includes integrated balun
■ 5-band fully configurable EQ
■ CSR's latest CVC technology for narrow-band
and wideband voice connections including wind
noise reduction
■ HFP v1.6 includes wideband speech and mSBC
codec
■ Voice recognition support for answering a call,
enables true hands-free use
■ Multipoint HFP connection to 2 phones for voice
■ Multipoint A2DP connection enables a headset
(A2DP) connection to 2 A2DP source devices for
music playback
■ Secure simple pairing, CSR's proximity pairing
and CSR's proximity connection
■ Audio interfaces: I²S and PCM
■ Serial interfaces: UART, USB 2.0 (full-speed),
I²C and SPI
■ SBC, MP3 and AAC decoder support
■ Wired audio support (USB and analogue)
■ Support for smartphone/tablet applications
■ Integrated dual switch-mode regulators, linear
regulators and battery charger
■ External crystal load capacitors not required for
typical crystals
■ 3 LED outputs
■ 68‑ball VFBGA 5.5 x 5.5 x 1mm 0.5mm pitch
■
Green (RoHS compliant and no antimony or
halogenated flame retardants)
Stereo Headset Solution
Low-power Solution for
DSP Intensive Audio Applications
2-mic CVC Audio Enhancement
Fully Qualified Single-chip
Bluetooth
®
v3.0 System
Advance Information
CSR8640A03
Issue 1
2.4GHz
Radio
+
Balun
I/O BT_RF
RAM
Baseband
MCU
Kalimba
DSP
ROM XTAL
Serial Flash /
EEPROM
UART/USB
Audio In/Out
SPI/I 2 C
External Memory
PIO
General Description
The BlueCore
®
CSR8640™ BGA is a product from
CSR's Connectivity Centre. It is a single-chip radio and
baseband IC for Bluetooth 2.4GHz systems.
The integrated peripherals reduce the number of
external components required, including no
requirement for external codec, battery charger,
SMPS, LDOs, balun or external program memory,
ensuring minimum production costs.
The battery charger architecture enables the
CSR8640 BGA to independently operate from the
charger supply, ensuring dependable operation for all
battery conditions.
Applications
■ Stereo headsets
■ Wired stereo headsets and headphones
■ Portable stereo speakers
The enhanced Kalimba DSP coprocessor with
80MIPS supports enhanced audio and DSP
applications.
The integrated audio codec supports 2 channels of
ADC, 2 digital microphone inputs and stereo output, as
well as a variety of audio standards.
See
CSR Glossary at www.csrsupport.com .
Advance Information
This material is subject to CSR's non-disclosure agreement
© Cambridge Silicon Radio Limited 2011
Page 1 of 110
CS-209182-DSP1
www.csr.com
CSR8640 BGA
Data Sheet