BM83 BM83 Bluetooth Stereo Audio Module Data Sheet Introduction The BM83, based on Microchips dual-mode IS2083 system-on-chip (SoC) device, is an RF-certified, fully integrated module with high-performing voice and audio post-processing capability for Bluetooth audio applications. Tuning for Noise Reduction, Acoustic Echo Cancellation (AEC) and EQ filtering can be customized with an easy-to-use GUI Configuration Tool. This flexible platform provides multiple digital and analog audio interfaces including stereo 2 microphones, I S, Line-In and a stereo audio DAC. It supports easy firmware upgrades via UART, USB and Over-the- Air (OTA). This turn-key solution module is pre-programmed with firmware that enables Bluetooth audio playback for a plug-and- play solution, and an audio transceiver solution for A2DP source/sink. Control settings for LED drivers and other peripherals can be set via the Configuration Tool. Advanced developers can use the Software Development Kit (SDK) to implement their applications. Note: Contact your local sales representative for more information about the Software Development Kit (SDK). Figure 1.BM83 Module Block Diagram BM83 PCB ANTENNA IS2083BM BLUETOOTH XTAL DSP TRANSCEIVER AUDIO CODEC POWER CORE MANAGEMENT UNIT FLASH ROM RAM MEMORY BAT IN ADAP IN I/O PORT Datasheet DS70005402D-page 1 2021 Microchip Technology Inc. MIC-1 (STEREO DIGITAL) MIC-1 (ANALOG) MIC-2 (ANALOG) LINE-IN 2 I C USB 2 I S GPIO DEBUG INTERFACE UART BM83 The BM83 module supports the following Bluetooth profiles and codecs: Profiles: Hands-free Profile (HFP) 1.7.2, Headset Profile (HSP) 1.2, Advanced Audio Distribution Profile (A2DP) 1.3, Serial Port Profile (SPP) 1.2, Audio/Video Remote Control Profile (AVRCP) 1.6 and Phone Book Access Profile (PBAP) 1.2 Codecs: Advanced Audio Codec (AAC) and Sub-band Coding (SBC) Features Qualified for Bluetooth v5.0 Specification: HFP 1.7.2, HSP 1.2, A2DP 1.3, SPP 1.2, AVRCP 1.6 and PBAP 1.2 Bluetooth classic (BR/EDR) and Bluetooth Low Energy General Attribute Profile (GATT) and General Access Profile (GAP) Bluetooth Low Energy Data Length Extension (DLE) and secure connection SDK: 8051 MCU debugging 24-bit program counter and data pointer modes Multi-Link: A2DP (maximum 3 devices) HFP (maximum 1 device) Multi-Speaker (MSPK) Solution: Microchip s proprietary solution to connect a central speaker to one or more peripheral speakers With MSPK firmware, the BM83 can provide Concert mode and Stereo mode Audio Transceiver (AT) Solution: With AT firmware, the BM83 can work as either an A2DP source (where BM83 is the transmitter) or A2DP/HFP sink (where BM83 is a receiver) Audio Interfaces: Stereo line input Two analog microphones One stereo digital microphone Stereo audio Digital-to-Analog converter (DAC) 2 Inter-IC (I S) Sound input/output 2 I S Host Clock (MCLK)/reference clock USB, UART, and Over-the-Air (OTA) Firmware Upgrade Built-In Lithium-Ion and Lithium Polymer Battery Charger (Up to 350 mA Charging Current) Compact Surface Mount Module: 32 mm x 15 mm x 2.5 mm Castellated surface mount pads Module shield Integrated 3V and 1.8V Configurable Switching Regulator and Low-Dropout (LDO) RF/Analog Frequency Spectrum: 2.402 GHz to 2.480 GHz Receive Sensitivity: -90 dBm (2 Mbps EDR, at 0.01% BER) Programmable Transmit Output Power: Up to +10.4 dBm (typical) for Basic Data Rate (BDR) Up to +9.2 dBm (typical) for Enhanced Data Rate (EDR) DS70005402D-page 2 Datasheet 2021 Microchip Technology Inc.