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1、Microchip BM64 蓝牙 42 立体声音频模块解决方案时间：2016-10-10 09:39:44 作者：Microchip 来源：中电网Microchip 公司的 BM62/BM64 立体声音频模块是完全合格的蓝牙 4.2 双模式模块,能在产品中增加无线音频和语音应用.支持 HFP 1.6, HSP 1.2, A2DP 1.3, SPP 1.2,AVRCP 1.6, 支持蓝牙(BR/EDR/BLE)指标, 支持分辨率高达 24 位 96kHz 音频数据格式, 频率范围 2.402 GHz 到 2.480 GHz,接收灵敏度-90 dBm (2 Mbps EDR),BM64 输出功率
2、+15dBm,支持 64 kbps A 律和 u 律 PCM 格式/ 连续可变斜率增量调制(CVSD),主要用在条形音箱和超低音音箱,蓝牙扬声器和多个扬声器 .本文介绍了 BM64 主要特性,多种应用框图,BM64 评估板(EVB)主要特性和主要元件以及电路图.The BM62/64 Stereo Audio module is a fully qualifiedBluetooth 4.2 dual-mode module for designers to addwireless audio and voice applications to their products.The BM62/6
3、4 module is a Bluetooth Special InterestGroup (SIG) certified module that provides a completewireless solution with Bluetooth stack, integrated PCBantenna, and worldwide radio certifications in acompact surface-mount package.The BM62/64 module has several SKUs. The BM62 isa Class 2 device and the BM
4、64 is available in bothClass 1 and Class 2 versions.BM64 主要特性: Qualified for Bluetooth v4.2 specifications Worldwide regulatory certifications are planned Supports HFP 1.6, HSP 1.2, A2DP 1.3, SPP 1.2,AVRCP 1.6 Supports Bluetooth (BR/EDR/BLE) specifications(FW dependent) Stand-alone module with on-bo
5、ard PCB antennaand Bluetooth stack Supports high resolution up to 24-bit, 96 kHzaudio data format Supports to connect two hosts with HFP/A2DPprofiles simultaneously Transparent UART mode for seamless serial dataover UART interface Supports virtual UART cable transport betweenhost MCU and smartphone
6、applications by BluetoothSPP or BLE link Easy to configure with Windows GUI or directlyby external MCU Supports firmware field upgrade Supports 1 microphone Compact surface mount module:- BM62: 29 x 15 x 2.5 mm- BM64: 32 x 15 x 2.5 mm Castellated surface mount pads for easy andreliable host PCB moun
7、ting RoHS compliant Ideal for portable battery operated devices Internal battery regulator circuitryRF/Analog Frequency spectrum: 2.402 GHz to 2.480 GHz Receive sensitivity: -90 dBm (2 Mbps EDR) Class 2 output power (+2 dBm typical) for BM62,BM64 and Class 1 output power (+15 dBm typical)for BM64DSP
8、 Audio Processing Supports 64 kbps A-Law, u-Law PCM format/Continuous Variable Slope Delta (CVSD) Modulationfor SCO channel operation Supports 8/16 kHz noise suppression Supports 8/16 kHz echo cancellation SBC and optional AAC decoding Packet loss concealment (PLC) Supports Serial Copy Management Sy
9、stem(SCMS-T) content protectionAudio Codec SBC and optional AAC decoding 20-bit digital-to-analog (DAC) with 96 dB SNR 16-bit analog-to-digital (ADC) with 90 dB SNR Up to 24-bit, 96 kHz I2S digital audioPeripherals Built-in lithium-ion and lithium-polymer batterycharger (up to 350 mA) Integrated 1.8
10、V and 3V configurable switchingregulator and low-dropout (LDO) Built-in ADC for battery monitoring and voltagesense Built-in ADC for charger thermal protection Built-in undervoltage protection (UVP) An AUX-In port for external audio input Two LED drivers Multiple I/O pins for control and statusHCI I
11、nterface High-speed HCI-UART interface (supports up to921,600 bps)MAC/Baseband Processor Supports Bluetooth 4.2 dual mode (FW dependent)- BR/EDR transport for audio, voice, and SPPdata exchange- BLE transport for proprietary transparentservice and ANCS data exchangeOperating Condition Operating volt
12、age: 3.2V to 4.2V Operating temperature: -20 to +70Compliance Bluetooth SIG QDID: 83345 (BM62, BM64 Class2) and 83336 (BM64 Class 1) Certifications planned for the United States(FCC), Canada (IC), European Economic Area(CE), Korea (KCC), Taiwan (NCC), Japan (JRF),and China (SRRC)BM64 应用 : Soundbar a
13、nd Subwoofer Bluetooth speaker Multi-speaker图 1.BM64 模块应用框图图 2.BM64 模块条形音箱和超低音音箱应用框图图 3.采用 BM64 和智能手机的条形音箱和超低音音箱应用框图图 4.BM64 模块多扬声器应用框图图 5.BM64 模块立体声耳机参考电路图 6.用于立体声耳机的 BM64 参考电路(1)图 7.用于立体声耳机的 BM64 参考电路(2)BM64 评估板 (EVB)The BM64 EVB enables the user to evaluate and demonstrate the functionalities of
14、theBM64 module. The BM64 EVB includes status LEDs and an integrated configurationand programming interface for plug-and-play capability, which enables rapidprototyping and faster time to market.Along with the BM64 EVB, software tools and applications are provided to demonstratethe Bluetooth connecti
15、ons to the on-board BM64 module with options for configuring orprogramming it.The BM64 EVB kit includes the following items: One BM64 EVB, which contains the BM64SPKS1MC1 module One micro-USB cable One 15V DC power adapter Two speaker cables图 8.BM64 评估板 (EVB)套件外形图AO-Electronics 傲壹电子 官网： 中文网：ALPS ADI
16、 IR JRC/NJR KEC OTAX Seoul Semiconductor TI Walsin TechnologyBM64 评估板 (EVB)主要特性 : The BM64 EVB includes a BM64 module, qualified for Bluetooth 4.2 specifications On-board MCU (PIC18F85J10) and DSP (YDA174) for easy operation andfeature demonstration On-board keypad matrix that is controlled by MCU, which makes it easy forplayback control Built-in Nea
