BM90

BM90 Bluetooth® 3.0 Multi-Speaker Stereo Audio Module Features System Specification  Compliant with Bluetooth Specification v.3.0 + EDR in 2.4 GHz ISM band module  It supports following profiles : - Hands Free 1.5 - Headset 1.0 - A2DP 1.0 - AVRCP 1.0 Baseband Hardware  Built-in 16MHz main clock input.  Built-in internal ROM for program memory  Support to connect to two hosts ( phones, tablets…) with HFP or A2DP profiles simultaneously  Adaptive Frequency Hopping (AFH) avoids occupied RF channels  Fast Connection supported RF Hardware  Fully Bluetooth 3.0 + EDR system in 2.4 GHz ISM band.  Combined TX/RX RF terminal simplifies external matching and reduces external antenna switches.  Max. +4dBm output power with 20 dB level control from register control.  Built-in T/R switch for Class 2/3 application  To avoid temperature variation, temperature sensor with temperature calibration is utilized into bias current and gain control.  Fully integrated synthesizer has been created. There requires no external VCO, varactor diode, resonator and loop filter.  Crystal oscillation with built-in digital trimming for temperature/process variations.  Built-in PCB antenna. Audio processor  Support A-Law or -Law PCM format, or CVSD (Continuous Variable Slope Delta Modulation) for SCO channel operation.  Noise suppression  Echo suppression  SBC decoding  Packet loss concealment  Build-in one languages (English) voice prompts and 20 events for each one  Support SCMS-T Aud...