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。
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)
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
原文作者：游子
