BlueCore™6-Audio ROM QFN

General Description
BlueVox™2 is a low-cost fully-featured ROM chip solution for mono headsets with extremely low power consumption. It's based on CSR's BlueCore™6 Audio ROM IC, offering a Bluetooth radio, baseband, DAC/ADC, AuriStream CODEC, switch-mode power supply and battery charger in a low-cost compact 7x7mm QFN package. An ultra-small 4.5 x 5.5mm BGA package is also available.
BlueVox™2 also includes a configurable echo and noise reduction feature in hardware which reduces headset echo and wind noise allowing the headset user to be heard more clearly.
It supports the latest Bluetooth v2.1 + EDR specification which includes Secure Simple Pairing, greatly simplifying the pairing process.
The device incorporates auto-calibration and built-in self-test (BIST) routines to simplify development, type approval and production test.
BlueCore™6‑Audio ROM QFN has been designed to reduce the number of external components required.
The device includes AuriStream™, which offers significant power reduction over the CVSD based system when used at both ends of the link.
All hardware and device firmware is fully compliant with the Bluetooth v2.1 + EDR specification (all mandatory features).

Transmitter
8dBm RF transmit power with level control from on-chip 6-bit DAC over a dynamic range >30dB
Class 2 and Class 3 support without the need for an external power amplifier or TX/RX switch

Receiver
Receiver sensitivity of -92dBm
Integrated channel filters
Digital demodulator for improved sensitivity and co-channel rejection
Real-time digitised RSSI available on HCI interface
Fast AGC for enhanced dynamic range

Baseband and Software
Internal ROM
48Kbyte internal RAM allows full speed data transfer, mixed voice & data and full piconet operation, including all EDR packet types.
Logic for forward error correction, header error control, access code correlation, CRC, demodulation, encryption bit-stream generation, whitening and transmit pulse shaping. Supports all mandatory Bluetooth v2.1 + EDR specification features including eSCO and AFH.
Transcoders for A-law, μ-law and linear voice from host and A-law, μ-law and CVSD voice over air.
AuriStream™ CODEC offers significant power reduction over the CVSD based system when used at both ends of the link.
Configurable mono headset ROM software to setup headset features and user interface (UI).
Support for HFP 1.5 (including three-way calling) and HSP 1.0
Support for Bluetooth v2.1 + EDR specification Secure Simple Pairing
Multipoint support allows the headset to connect to two phones or one phone and a VoIP dongle.
Built-in echo and noise reduction hardware.