DK-8645-10064-1A Datasheet, PDF (1/5 Pages) –

Features
■ _{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 narrowband and}
wideband voice connections including wind noise
reduction
■ Wideband speech supported by HFP v1.6 profile
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 v2.0 (full-speed),}
I²C and SPI
■ aptX, 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)
BlueCore^® CSR8645™ BGA
CSR8645 Stereo ROM Solution
with aptX^™
2-mic CVC Audio Enhancement
Fully Qualified Single-chip
Bluetooth^® v4.0 System
Pre-production Information
CSR8645A03
Issue 2
XTAL
BT _RF
2.4GHz
Radio
+
Balun
ROM
RAM
External Memory
Serial Flash /
EEPROM
UART/USB
Baseband
I/ O
PIO
MCU
Kalimba
DSP
Audio In/Out
SPI / I²C
General Description
BlueCore^® CSR8645™ 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
CSR8645 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.
Production Information
© Cambridge Silicon Radio Limited 2011
Page 1 of 5
CS-219862-TOP2
www.csr.com