80MHz RISC MCU and 80MIPS Kalimba DSP ■ Internal ROM， serial flash memory and EEPROM interfaces ■ Mono codec with 1 analogue input and 1 digital microphone （MEMS） interface ■ Radio includes integrated balun ■ 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 2.0 （full-speed）， I2C and SPI ■ 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）