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Technical content

Features CSR8670™ BGA ■ Bluetooth® v3.0 specification fully qualified software ■ Bluetooth v4.0 specification compliant hardware ■ Radio includes integrated balun and RF performance of 10dBm transmit power and -90dBm receive sensitivity ■ 80MHz RISC MCU and 80MIPS Kalimba DSP ■ 16Mb internal flash memory (64-bit wide, 45ns); optional support for 64Mb of external SPI flash ■ Stereo codec with 2 channels of ADC and up to 6 microphone inputs (includes bias generators and digital microphone support) ■ Support for latest CVC technology for narrow- band and wideband voice connections including wind noise reduction ■ Audio interfaces: I²S, PCM and SPDIF ■ Serial interfaces: UART, USB 2.0 full-speed, master and slave bit-serialiser (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 1mm, 0.5mm pitch 112‑ball VFBGA ■ Green (RoHS compliant and no antimony or halogenated flame retardants) Low-power Solution for DSP Intensive Audio Applications Production Information CSR8670 Issue 2 2. 4GHz Radio Balun I/OBT_RF RAM Baseband MCU Kalimba DSP FlashXTAL Serial FlashExternal Memory UART/USB PIO Audio In / Out PCM/I2S/ SPDIF SPI /I2C LED /PO Audio Interface Capacitive Sense Clock Generation General Description CSR8670 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. The dual-core architecture with flash memory enables manufacturers to easily differentiate their products with new features without extending development cycles. BlueCore5-Multimedia® platform is software-portable to the CSR8670, with easy migration of a broad range of solutions from eXtension partners. This migration enables rapid time-to-market deployment of a broad range of consumer electronics products. The enhanced Kalimba DSP coprocessor with 80MIPS supports enhanced audio and DSP applications.

Applications

Home Entertainment Ecosystem ■ TVs ■ Smart remote controllers ■ Wired or wireless soundbars ■ Wired or wireless speakers and headphones Tablets / PCs / Mobile Connectivity ■ Wearable audio (on-the-go) ■ Wearable audio with sensors (health and well- being applications) ■ Wired or wireless stereo headphones for music/ gaming/multimedia content ■ Wired or wireless speakers ■ Wired or wireless speakerphones ■ Mono headsets for voice The audio codec supports 2 ADC channels, up to 6 microphone inputs, stereo output and a variety of audio standards. Production Information This material is subject to CSR's non-disclosure agreement © Cambridge Silicon Radio Limited 2011 Page 1 of 116 CS-127997-DSP2 www.csr.com CSR8670 BGA Data Sheet

■ On-chip balun (50Ω impedance in TX and RX modes) ■ No external trimming is required in production ■ Bluetooth v3.0 specification compliant Bluetooth Transmitter ■ 10dBm RF transmit power with level control from on-chip 6-bit DAC over a dynamic range >30dB ■ Class 1, Class 2 and Class 3 support without the need for an external power amplifier or TX/RX switch Bluetooth Receiver ■ Receiver sensitivity of -90dBm ■ Integrated channel filters ■ Digital demodulator for improved sensitivity and co- channel rejection ■ Real-time digitised RSS I 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 19.2MHz to 42MHz or an external clock 19.2MHz to 42MHz frequencies for GSM and CDMA devices with sinusoidal or logic level signals Kalimba DSP ■ Enhanced Kalimba DSP coprocessor, 80MIPS, 24‑bit fixed point core ■ 2 single-cycle MACs; 24 x 24-bit multiply and 56-bit accumulator ■ 32-bit instruction word, dual 24-bit data memory ■ 12K x 32-bit program RAM inc luding 1K instruction cache for executing out of internal flash ■ 32K x 24-bit + 32K x 24-bit 2-bank data RAM Audio Interfaces ■ Audio codec with 2 high-quality dedicated ADCs ■ 2 microphone bias generators and up to 2 analogue microphone inputs ■ Up to 6 digital microphone (MEMS) inputs ■ G.722 compatible, includes improved digital FIR 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 and 96kHz (DAC only) Baseband and Software ■ 16Mb internal flash ■ Memory protection unit supporting accelerated VM ■ 56KB 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 Physical Interfaces ■U A R T i n t e r f a c e ■ USB 2.0 interface (full-speed) ■ Master and slave bit-serialiser (I²C and SPI) ■ Up to 29 PIOs, i.e. 14 general purpose PIOs and unused digital interfaces are available as PIOs ■ SPI debug and programming interface with read access disable locking ■ PCM, I²S and SPDIF interfaces ■ Dual/quad external serial flash memory interface ■ 3 LED drivers (includes RG B) with PWM flasher on sleep clock ■ Support for up to 6 capacitive touch sensor inputs Integrated Power Control and Regulation ■ 2 high-efficiency switch-mode regulators with 1.8V and 1.35V outputs from battery supply ■ 3.3V USB pad supply linear regulator ■ Low-voltage linear regulator fo r internal digital supply with 0.80V to 1.25V output ■ Low-voltage linear regulator f or internal analogue supply with 1.35V output ■ Power-on-reset detects low supply voltage ■ Power management includes digital shutdown and wake- up commands with an integrated low-power oscillator for ultra-low power Park/Sniff/Hold mode Battery Charger ■ Lithium ion / Lithium polymer battery charger with instant- on ■ Fast charging support up to 200mA with no external components ■ Higher charge currents using external pass device ■ Supports USB charge enumeration Charger pre-calibrated ■ 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 ■ Clock request output to control external clock ■ Auxiliary ADC and DAC available to applications Package Option ■ 6.5 x 6.5 x 1mm, 0.5mm pitch 112‑ball VFBGA Production Information This material is subject to CSR's non-disclosure agreement © Cambridge Silicon Radio Limited 2011 Page 2 of 116 CS-127997-DSP2 www.csr.com CSR8670 BGA Data Sheet