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此人体感应蓝牙耳机，主要由QUALCOMM蓝牙CSR8670芯片和SEMTECH公司的SX9310传感器芯片，两部分组成的高端人体感应蓝牙耳机。对比其他的蓝牙耳机，额外具备“当来电 或 音乐时，耳机可以检测是否为佩戴状态，以决定语音 或 音乐是否转回手机播放”高级功能。
SX9310 是电容比吸收率控制器（SAR）。拥有三个感应器件( CS0, CS1, CS2)，可以使用其三个中的两个来精确地连接到SAR的智能引擎,来做无生命的物体和人体区分。第三个传感器输入可独立用于标准电容传感。I2C的通信接口，在检测到接近物时由NIRQ脚输出信号。SX9310包含一个片上的自校正控制器,定期进行敏感度调整以保持在宽温度变化下的峰值性能，湿度和噪声环境，提供简化产品开发和提高性能。
实物图：
核心技术优势
CSR8670 Features:
■ Bluetooth® v4.0 specification fully qualified
software
■ Radio includes integrated balun
■ 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 CSR's 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, I²C
■ 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)
方案规格
SX9310 PRODUCT FEATURES
■ 2.7 – 5.5V Core Supply (VDD)
* 1.65 – 2V Host Interface Supply (SVDD)
* 1.65 – 5.5V Compliant Host Interface (VPULL)
■ Up to 3 SAR Capacitive Sensor Inputs
* Patented On-Chip Smart Engine For SAR (Body versusInanimate Object Detection)
* Capacitance Resolution down to 0.08 fF
* Capacitance Offset Compensation up to 100 pF
* Integrated RF Shield
* Advanced Temperature Compensation
■ Automatic Calibration
■ Built-in Start-up Proximity Detection
■ Ultra Low Power Consumption
* Active Mode: 70 uA
* Doze Mode: 8 uA
* Sleep Mode: 2.5 uA
■ 400kHz I2C Serial Interface
■ Programmable Interrupt or Real-Time Status Pin
■ User NVM for Custom Default Registers Values(Standalone Mode)
■ Two Reset Sources: POR, Soft Reset
■ -40°C to +85°C Operation
■ Compact Size: 1.36 x 1.33 mm WLCSP package
■ Pb & Halogen Free, RoHS/WEEE compliant
方案来源于大大通。
