BM83 BM83 Audio Transceiver v1.0.1 Release Note VERSION1.0.1 The following are attributes of the Audio Trainsceiver (AT) firmware, which supports A2DP source. The BM83SM1-00TB modue is programmed with this firmware and defaulted to Host Mode. Navigate at the directory structure below for software. · Firmware Update Items Version Note 8051 Images 1.00.0100_20210526 Include a bug fix · Documents and Tools Update Items Audio UART commandSet isUpdate Software SPKCommandSet Software Version 2.10 3.14 206.009 · Other collateral remains same as version 1.0 1. New Features and Enhancements: · N/A. 2. Issues Fixed: · Fixed that Rx cannot linkback when BM83 start up. · Fixed that MBA cannot establish transparent service with Rx. Note Provide latest UART command set and tools. No new UART command or new feature with the tools. 3. Errata: · Same as version 1.0 ©2020 Microchip Technology Inc. MCHP Confidential page 1. BM83 VERSION1.0 The following are attributes of the Audio Trainsceiver (AT) firmware, which supports A2DP source. The BM83SM1-00TA modue is programmed with this firmware and defaulted to Host Mode. Navigate at the directory structure below for software. IS2083_Turnkey_1.1.0\Software\IS2083 Image\AT v1.0 · Documents and Utility tools Items Version Note [Document] Audio UART commandSet 2.07 [PC Tool] Config Tool Software 1.2.25 [PC Tool] isUpdate Software 297 [PC Tool] SPKCommandSet Software 202.253 [PIC32 MCU] Host MCU FW 1.0.8 4. New Features and Enhancements: · Support both Tx and Rx Mode. See below major supported features for both modes. Features Tx mode Rx mode A2DP v1.3 Source Role Y N HFP v1.7 Audio Gateway role N N A2DP v1.3 Sink Role, HFP v1.7 Handsfree role N Y AVRCP v1.6 Target and Controller roles N Y Embedded and Host Mode supported Y Y Input Audio Source I2S, Aux-In I2S, Aux-In BLE Transparent Service Host Mode only Y BM83 FW update scheme UART, USB UART, USB, OTA Mobile App MBA supported N Y Other MSPK2 v1.2 supported features: WCT, GFP, PBAP, N N SPP, AVRCP Browsing, iAP2 · Dual Link supported: o Tx Mode: Two A2DP connections. o Rx Mode: Two A2DP + 1 HF connections. · Support TX Mode and RX Mode mode switch via GPIO level switch or UART Commands · Tx mode features: o Nearby Bluetooth audio devices discovery and connections: Embedded Mode: Auto connection operation based on RSSI value. ©2020 Microchip Technology Inc. MCHP Confidential page 2. BM83 Host Mode: Filter discoverred devices based on UART command asserted conditions. o Support both I2S IN or AUX IN audio input source. input source is controlled through GPIO or UART Commands. o Auto re-connect with existing paired devices after power on. o Audio streaming toggle operation under dual link: Embedded mode: One key operation. Host Mode: UART command initiated by Host MCU. o Support SBC Encoder with 48 KHz or 44.1 KHz sampling rate. This initialzation setting can be configured via Configuration Tool or UART command. o Dual streaming supported: Streaming to two A2DP Sinks simultaneously. It can be enabled through Configuration tool. o Specific tab in Configuration Tool for Tx mode confiuration. See Configuration tool in detail. · Rx mode features are inherited from BM83 MSPK2 v1.2: o A2DP, AVRCP and HF device role. o Charging, LED and button control behavior. · Bluetooth 5.0 compliant and end product listing. 5. Issues Fixed: · N/A. First release. 6. Errata: · Dual Streaming issues and limitation o While one Bluetooth audio device is connected and playback streaming, audio streaming may be stuttering if the another Bluetooth audio device link back to BM83 AT device. o While one Bluetooth TWS headset is connected and playback streaming, audio break may be observed if BM83 AT is trying to connect to another speaker o Under dual streaming condition, no audio or audio breaks may be observed while 1 connected Bluetooth audio device goes out of range. · BLE + TX Mode Streaming Co-Existence Limitation o When LE is connected using Android MBA app, a short period of audio break is observed in connected Bluetooth audio device due to RF Bandwidth limitation. · IOP issues with HUAWEI FreeBids3 TWS Headset o No audio out while earbuds are taken out from box. Earbud link back to BM83 AT but link is lost suddenly. · Repeated plug in and out, Aux-in cable would cause noise at the receiver · Audio switching between receivers using toggle play back command causes noise at the receiver ©2020 Microchip Technology Inc. MCHP Confidential page 3. Document Revision History Revision Date Section 1.0 6/23/2020 Description Initial Version BM83 ©2020 Microchip Technology Inc. MCHP Confidential page 4. The Microchip Website The Microchip Website Microchip provides online support via our website at http://www.microchip.com/. This website is used to make files and information easily available to customers. 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