原标题：双耳真无线蓝牙耳机 (TWS-M7B无线对耳)

　　应用领域：便携产品

　　方案类型：成品

　　方案概述

　　TWS-M7B无线对耳

　　规范

　　芯片:AB1526P / RTL8763B / BES2000U

　　版本:4.2/5.0

　　概要:A2DP;AVRCP;HFP;HSP;SPP

　　电池:50mAh A+级锂离子电池

　　充电时间:小于2h

　　谈话时间:3 h / 4 h

　　待机时间:100小时

　　操作距离:10 m

　　充电箱规格

　　电池类型:A+级锂离子电池

　　容量:480 mAh

　　耳机充电次数:4-5 times

　　【AB1526P】

　　General Description

　　AB1526P is an advanced single-chip solution which integrates baseband and radio for intensive audio applications. It is Bluetooth 5.0 dual mode certified and supports wide band speech which is defined at HFP1.7, AAC decoder, and 2-Mic for better noise reduction and echo cancellation performance. AB1526P embeds serial flash which is more flexible for customer SW upgrading and 3rd party SW porting is supported. With optimized MCU structure, interface arrangement and better DSP algorithm, AB1526P provides higher performance and crystal voice and music quality in most of the Bluetooth audio application like Headset and Headphone. With very small BGA package type and only a few outside components, AB1526P can fit the ultra-small type headset application. AB1526P supports TWS, which can let end users have great stereo experience without wire connection.

　　Features

　　BT 5.0 dual mode including low energy profiles

　　Support EDR function

　　A2DP profile version 1.3 compliant

　　HFP profile version 1.7 compliant

　　HSP profile version 1.2 compliant

　　AVRCP profile version 1.5 compliant

　　SPP profile version 1.2 compliant

　　Embedded 96MIPS dual-MAC DSP coprocessor

　　2-Mic Noise reduction and Echo cancellation

　　Programmable EQ

　　Support Packet loss concealment

　　Support Wide band speech, wide band voice prompt and customized voice prompt

　　Support Voice command

　　Support AAC_LC decoder

　　Support iOS and Android APP

　　Support over the air update

　　Build in Battery service, proximity profiles

　　Integrated Li-ion battery charger supports 250mA fast charging and over-discharging protection

　　Applications

　　Stereo headset

　　TWS headset

　　Package

　　5mmx5mm 64-ball BGA package

       蓝牙5.0双模芯片：RTL8763B

　　瑞昱半导体成立于1987年，位于台湾「硅谷」的新竹科学园区，凭借当年几位年轻工程师的热情与毅力，走过艰辛的草创时期到今日具世界领导地位的专业IC设计公司，瑞昱半导体劈荆斩棘，展现旺盛的企图心与卓越的竞争力，开发出广受全球市场肯定与欢迎的高性能、高品质与高经济效益的IC解决方案。瑞昱半导体自成立以来一直保持稳定的成长，归功于瑞昱对产品/技术研发与创新的执着与努力，同时也归因于瑞昱的优良传统。

　　General Features

　　
Bluetooth 5 specification compliant

　　
Supports HFP 1.7, HSP 1.2, A2DP 1.3,AVRCP 1.6, SPP 1.2 and PBAP 1.0

　　
Single-end RF radio output with highperformance 10dBm of transmitter power and-94dBm 2M EDR receiver sensitivity

　　
Supports Bluetooth classic (BDR/EDR)

　　
Supports Bluetooth Low Energy (BLE)

　　 Generic access service

　　 Device information service

　　 Proprietary services for datacommunication

　　 Apple Notification Center Service(ANCS)

　　
Real Wireless Stereo (RWS)

　　
Supports USB type-C audio

　　
Supports iAP2

　　
Realtek’s latest RCV (Real Clear Voice) technology for narrowband and widebandvoice connection, including wind noisereduction

　　
Supports high resolution audio codec up to24bits, 192kHz audio data format

　　
Supports dual analog and digital MIC,AUX-IN, I2S digital audio, analog output

　　
Supports high speed UART, I2C, SPI and USB2.0 compatible interface

　　
Supports high resolution 12-bits multi-channel ADC

　　
Supports PWM I/O and smart LED controller

　　
Supports USB BC1.2 battery charging

　　
Smart I/O distribution scheme with MUX

　　
Built-in 8Mbits FLASH memory (RTL8763BF/RTL8763BFR)

　　
Integrated dual switch mode power regulator,linear regulators, and battery charger;charging current up to 400mA

　　
Built-in battery voltage monitoring andthermal protection scheme with externalthermal resistor

　　
SBC, AAC decoder support

　　
Package: 5x5mm2 QFN40 (RTL8763BM,RTL8763BF, RTL8763BFR), 6x6mm2QFN48 (RTL8763BS) and 8x8mm2 QFN68(RTL8763BA) with 0.4mm pitch

　　
Supports OTA and USB firmware upgrade

　　
GSM 217Hz interference block out design

　　
Low BOM cost

　　
Green (RoHS compliant and no antimony orhalogenated flame retardants)

　　
Supports PTA (Packet Traffic Arbiter) whenco-existing with Wi-Fi

　　Baseband Features

　　
40MHz main clock

　　
Supports serial flash for FW storage and parameter upgrade

　　
Adaptive Frequency Hopping (AFH)

　　
Multi-link support

　　
Supports Serial Copy Management System (SCMS-T) content protection

　　RAM and ROM Size

　　
ROM size 768KB

　　
MCU RAM size 16KB x 8 Data RAM + 8KB X 2 cache RAM

　　
DSP RAM 8KB x 22

       【BES2000U(TWS)蓝牙芯片】

　　BES2000U芯片简介:

　　TWS对耳 真正的无线立体声耳机

　　左右声道延时1ms以内

　　超越APTX编解码效率的编解码算法，保持更高更好的音质

　　更远的左右声道通讯距离，左右耳播放流畅

　　• ARMTM Cortex-M4F with On-chip and Flash

　　• The smallest package and lower power consumption

　　• Better performance on suppression of harmonic, good sensitivity, and have better

　　feel about cross body

　　• Support SBC ,AAC,OPUS for better performance

　　• Application: BES2000T/L/H support the stereo application. BES2000U/A/C support the TWS application

　　• Open and powerful platform to easy the products differentiation ➢ RF/Analog/PMU/Audio/CPU/RAM/Flash fully Integrated

　　➢ ARMTM Cortex-M4F Run Up to 400MHz

　　➢ Flexible Interface: USB, Type C, I2S, SPDIF, UART, I2C, SDIO…….

　　➢ Up to 32Mb psram and 32Mb flash to support rich soft feature

　　• Advanced 40nm low power process

　　➢ Support Dynamic Voltage Frequency Scaling

　　➢ Smaller Size for Portable Set Application

　　➢ Efficient power management technology to control power consumption

　　• HiFi audio performance

　　➢ Sample Rate 384KHz, 24bit ADC/DAC

　　➢ SNR: 105dBc