BT Audio 2 Click Board™

Product Code: MIKROE-4117

How Does The BT Audio 2 Click Board™ Work? The BT Audio 2 Click Board™ includes advanced audio features, such as multi-band dynamic range control, parametric multi-band equalizer, audio widening and virtual bass are inbuilt. The audio effect algorithms improve the user's audio listening experience in terms of better audio quality after audio signal processing. The input and output audios have different stages and each stage can be programmed to vary the gain response characteristics. A Digital Signal Processor (DSP) is used to perform speech and audio processing. The advanced speech features, such as acoustic echo cancellation and noise reduction are inbuilt. To reduce nonlinear distortion and to help echo cancellation, an outgoing signal level to the speaker is monitored and adjusted to avoid saturation of speaker output or microphone input. The BT Audio 2 Click Board™ supports one analog (line-in) signal from the external audio source. The analog (line-in) signal can be processed by the DSP to generate different sound effects (multi-band dynamic range compression and audio widening), which can be configured by using the DSP tool.

Also, module has an AFH function to avoid RF interference. It has an algorithm to check the nearby interference and to choose clear channel for transceiver Bluetooth signal. The on-chip Power Management Unit (PMU) has two main features: lithium-ion and lithium-polymer battery charger, and voltage regulator. A power switch is used to switch over the power source between the battery and an adapter. Also, the PMU provides current to drive two LEDs. The LED and button settings can be configured. The BT Audio 2 Click Board™ uses the UART communication interface and is designed to be operated only with a 3.3V logic level. A proper logic voltage level conversion should be performed before the Click board™ is used with MCUs with different logic levels. SPECIFICATIONS Type BT/BLE Applications Portable speaker, Multiple speakers, Headset and many more On-board modules BM62SPKS1MC2-0001AA Key Features The BT Audio 2 Click Board™ is qualified for Bluetooth v5.0 specification, high resolution up to 24-bit, 96 kHz audio data format, Bluetooth Low Energy data rate up to 1Mbits/s, connection of two hosts with HFP/A2DP profiles simultaneously Interface GPIO,UART Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V Pinout Diagram This table shows how the pinout of the BT Audio 2 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes External address bus negative EAN 1 AN PWM 16 MFB Multi-function button / power-on key System reset RST 2 RST INT 15 SC2 System configuration pin System configuration pin SC1 3 CS RX 14 TX UART data transmit NC 4 SCK TX 13 RX UART data receive NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC NC 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description PWR LD1 - Power LED Indicator STAT1 LD2 - Configurable indication LED 1 STAT2 LD3 - Configurable indication LED 2 MFB - - Multi-Function button REV - - Reverse command button VOL_DN - - Volume-down command button FWD