Features
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BlueCore
®
CSR8635 QFN
CSR8635 Stereo ROM Solution
1-mic CVC Audio Enhancement
Fully Qualified Single-chip
Bluetooth
®
v4.0 System
27
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General Description
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Bluetooth
®
v4.0 specification compliant
80MHz RISC MCU and 80MIPS Kalimba DSP
Stereo codec with 1 microphone input
Internal ROM, serial flash memory and EEPROM
interfaces
High-performance Stereo codec
Radio includes integrated balun with RF
performance of 8dBm transmit power and -89dBm
receiver sensitivity
5-band fully configurable EQ
Wideband speech supported by HFP v1.6 and
wideband voice connections including wind noise
reduction
Multipoint support for A2DP connection to 2
Secure simple pairing, CSR's proximity pairing and
Stereo line-in
Serial interfaces: USB 2.0, UART, I²C and SPI
Wired audio support
Integrated dual switch-mode regulators, linear
regulators and battery charger
External crystal load capacitors not required for
typical crystals
3 LED outputs (RGB)
68-lead QFN 8 x 8 x 0.9mm 0.4mm pitch
Green (RoHS compliant and no antimony or
halogenated flame retardants)
3
Production Information
CSR8635A04
Issue 5
rid
ay
XTAL
ROM
SPI/ I
2
C
Serial
Flash /
EEPROM
CSR8635 QFN Data Sheet
-F
RAM
UART/USB
om
.c
BT_RF
2.4GHz
Radio
+
Balun
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Baseband
I /O
PIO
in
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.c
MCU
Audio In / Out
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Kalimba
DSP
Debug SPI
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Applications
Stereo speakers
Speakerphones
1-mic stereo headset or headphones
Handsfree car kits
The enhanced Kalimba DSP coprocessor with 80MIPS
supports enhanced audio and DSP applications.
The integrated audio codec supports stereo input and
output, as well as a variety of audio standards.
See
CSR Glossary
at
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®
CSR8635 QFN is a single-chip
development of Bluetooth ROM stereo applications.
BlueCore
®
CSR8635 QFN consumer audio platform for
wired and wireless applications using the QFN package
integrates an ultra-low power DSP and application
processor with embedded flash memory, a high-
performance stereo codec, a power management
subsystem and LED drivers.
The CSR configuration tools and the development kit
provide a flexible and powerful development platform to
design advanced and high-quality Bluetooth stereo
products using BlueCore
®
CSR8635 QFN single-chip
Production Information
© Cambridge Silicon Radio Limited 2013
Confidential Information - This Material is Subject to CSR's Non-disclosure Agreement
Pr
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CS-303725-DSP5
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