CSR8675_datasheet_CSR8675

CSR8675

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Features

BlueCore

CSR8675 BGA

■

Bluetooth

v4.1 specification fully qualified

■

Radio includes integrated balun

■

80 MHz RISC MCU and 120 MHz Kalimba DSP

■

Up to 120 MIPS DSP for intensive digital signal

processing algorithms

■

24-bit audio

■

16 Mb internal flash; optional support for 64 Mb of

external SPI flash

■

Stereo codec with 2 channels of ADC and up to 6

microphone inputs (includes bias generation and

digital microphone support)

■

Audio interfaces:

■

2 x I²S/PCM

■

1 x SPDIF (independent of I²S/PCM ports)

■

Serial interfaces: UART, USB 2.0 full-speed, I²C

and SPI

■

Integrated dual switch-mode regulators, linear

regulators and battery charger

■

3 hardware LED controllers (for RGB) and ability to

drive LCD segment display directly

■

Support for up to 6 capacitive touch sensor inputs

■

6.5 x 6.5 x 1 mm, 0.5 mm pitch 112‑ball VFBGA

■

CSR8675 BGA application boards back compatible

with CSR8670 BGA

■

Green (RoHS compliant and no antimony or

halogenated flame retardants)

Bluetooth Smart Ready

Low-power Solution for

DSP Intensive Audio Applications

Production Information

CSR8675B

Issue 5

General Description

CSR8675 BGA consumer audio platform for wired and

wireless applications integrates an ultra‑low‑power

DSP and application processor with embedded flash

memory, a high-performance stereo codec, a power

management subsystem, LED and LCD drivers and

capacitive touch sensor inputs in a SoC IC.

2.4 GHz

Radio

Balun

I/O

BT_RF RAM

Baseband

MCU

Kalimba

DSP

Flash

XTAL

Serial Flash

Exter nal

Memory

UART/USB

PIO

Audio In / Out

PCM/I

SPI /I

LED /PIO

Audio

Interface

Capacitive

Sense

Clock

Gener ation

SPDIF

PCM/I

Applications

■

High-end wired/wireless stereo headphones

■

High-end wired/wireless stereo headsets

■

High-end wired/wireless active headsets

■

Wireless stereo speakers

■

Low-end docking stations and soundbars

■

Gaming headsets

The dual-core architecture with flash memory enables

manufacturers to easily differentiate their products with

new features without extending development cycles.

The enhanced Kalimba DSP coprocessor with up to

120 MIPS supports more digital signal processing

requirements in stereo headphones, headsets, gaming

headsets and soundbars.

The audio codec supports 2 ADC channels, up to 6

microphone inputs, stereo output and a variety of audio

standards.

CSR's popular BlueCore

CSR8670

™

and

BlueCore

5‑Multimedia platforms are

software‑portable to the CSR8675 BGA, with easy

migration of a broad range of solutions from CSR's

eXtension partners. This enables rapid time-to-market

deployment for a broad range of consumer electronic

products.

Production Information

Confidential Information - This Material is Subject to CSR's Non-Disclosure Agreement

Page 1 of 112

CS-232426-DSP5

www.csr.com

CSR8675 BGA

Data Sheet

Device Details

Bluetooth low energy

■ Dual‑mode Bluetooth low energy radio

■ Support for Bluetooth basic rate / EDR and low energy

connections

■ 3 Bluetooth low energy connections at the same time as

basic rate A2DP

Bluetooth Radio

■ On‑chip balun (50 Ω impedance in TX and RX modes)

■ No external trimming is required in production

■ Bluetooth v4.1 specification software/hardware

Bluetooth Transmitter

■ Typical RF transmit power

■ Basic rate 10 dBm

■ EDR -1 dB (relative power)

■ Bluetooth low energy 9 dBm

■ 6‑bit DAC level control

■ Class 1, Class 2 and Class 3 support without the need for

an external power amplifier or TX/RX switch

Bluetooth Receiver

■ Typical RF receiver sensitivity:

■ Basic rate -90 dBm

■ EDR -92 dBm

■ Bluetooth low energy -93 dBm

■ Integrated channel filters

■ Digital demodulator for improved sensitivity and co‑channel

rejection

■ Real‑time digitised RSSI available to application

■ Fast AGC for enhanced dynamic range

■ Channel classification for AFH

Bluetooth Synthesiser

■ Fully integrated synthesiser requires no external VCO,

varactor diode, resonator or loop filter

■ Compatible with crystals 19.2 MHz to 32 MHz or an external

clock 19.2 MHz to 40 MHz (default 26 MHz)

Kalimba DSP

■ Enhanced Kalimba 5 DSP coprocessor

■ 120 MHz clock, up to 120 MIPS performance

■ 24‑bit fixed-point core

■ Single‑cycle MAC:

■ 24 x 24‑bit multiply

■ 56‑bit accumulate

■ Improved architecture and instructions for better

performance over CSR8670 BGA

■ 32‑bit instruction word

■ Dual 24‑bit data memory

■ 12 K x 32‑bit program RAM including 1 K instruction cache

for executing out of internal flash

■ 2‑bank data RAM:

■ DM1 32 K x 24‑bit

■ DM2 32 K x 24‑bit

Baseband and Software

■ 16 Mb internal flash

■ Memory protection unit supporting accelerated VM

■ 56 KB internal RAM, enables full‑speed data transfer, mixed

voice/data and full piconet support

■ Logic for forward error correction, header error control,

access code correlation, CRC, demodulation, encryption bit

stream generation, whitening and transmit pulse shaping

■ Transcoders for A‑law, µ‑law and linear voice via PCM and

A‑law, µ‑law and CVSD voice over air

Audio Interfaces

■ Audio codec with 2 high‑quality dedicated ADCs

■ 24-bit audio processing support

■ 2 microphone bias generators and up to 2 analogue

microphone inputs

■ Up to 6 digital microphone inputs (MEMS)

■ G.722 compatible, includes improved digital IIR filter path

for stop‑band attenuation required for G.722 compliance

■ Enhanced side‑tone gain control

■ Supported sample rates of 8, 11.025, 16, 22.05, 32, 44.1,

48, 96 kHz and 192kHz (DAC only)

Physical Interfaces

■ UART interface

■ USB 2.0 interface (full‑speed)

■ Master and slave bit‑serialiser (I²C and SPI)

■ Up to 32 PIOs (includes 12 general purpose PIOs and

unused digital interfaces also available as PIOs)

■ SPI debug and programming interface with read access

disable locking

■ 2 x PCM/I²S and 1 x SPDIF supported simultaneously

■ Dual/quad external serial flash memory interface

■ 3 LED drivers (includes RGB) with PWM flasher on sleep

clock

■ Support for up to 6 capacitive touch sensor inputs

■ 2 analogue PIOs

Integrated Power Control and Regulation

■ 2 high‑efficiency switch‑mode regulators with 1.8 V and

1.35 V outputs from battery supply

■ 3.3 V USB pad supply linear regulator

■ Low‑voltage linear regulator for internal digital supply

■ Low‑voltage linear regulator for internal analogue supply

with 1.35 V output

■ Power‑on‑reset detects low supply voltage

■ Power management includes digital shutdown and wake‑up

commands with low‑power crystal drive for ultra‑low power

Park/Sniff/Hold mode

Battery Charger

■ Lithium ion / Lithium polymer battery charger with instant‑on

■ Fast charging support up to 200 mA with no external

components

■ Higher charge currents using external pass device

■ Supports USB BCv1.2 CDP, DCP and SDP charger

detection

■ Charger pre‑calibrated by CSR

■ PSE compliance:

■ Design to JIS‑C 8712/8714 (batteries)

■ Testing based on IEEE 1725

Auxiliary Features

■ Customer application space available

■ Crystal oscillator with built‑in digital trimming

■ Auxiliary ADC and DAC available to applications

Package Option

■ 6.5 x 6.5 x 1 mm, 0.5 mm pitch 112‑ball VFBGA

Production Information

Confidential Information - This Material is Subject to CSR's Non-Disclosure Agreement

Page 3 of 112

CS-232426-DSP5

www.csr.com

CSR8675 BGA

Data Sheet

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