BlueCore™5 FM WLCSP

General Description
The BlueCore™5-FM WLCSP is a single-chip radio and baseband IC for Bluetooth 2.4GHz systems including enhanced data rates (EDR) to 3Mbits/s. It includes an integrated FM receiver with stereo audio output stage and an RDS demodulator.
With the on-chip CSR Bluetooth software stack, it provides a fully compliant Bluetooth system to v2.0+EDR (with preliminary support for V2.1) of the specification for data and voice communications.
BlueCore™5-FM WLCSP has been designed to reduce the number of external components required which ensures production costs are minimised.
The device incorporates auto-calibration and built-in self-test (BIST) routines to simplify development, type approval and production test. All hardware and device firmware is fully compliant with the Bluetooth v2.0+EDR specification (all mandatory and optional features).
To improve the performance of both Bluetooth and 802.11b/g co-located systems a wide range of co-existence features are available including a variety of hardware signalling: basic activity signalling and Intel WCS activity and channel signalling.

Bluetooth Radio
Common TX/RX terminal simplifies external matching; eliminates external antenna switch
No external trimming is required in production
Bluetooth v2.0 + EDR Specification compliant

Bluetooth Transmitter
Class 2 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
Class 1 support using external power amplifier with RF power controlled by an internal 8-bit DAC

Bluetooth Receiver
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
Channel classification for AFH

Synthesiser
Fully integrated synthesiser requires no external VCO varactor diode, resonator or loop filter
Compatible with all common crystal frequencies between 12 and 52MHz or an external clock

FM Radio
Simultaneous operation with Bluetooth
Support of US/Europe (87.5 to 108MHz) and Japanese (76 to 90MHz) FM band
Wide dynamic range AGC
Soft mute and stereo blend
Adjustment-free stereo decoder and AFC
Autonomous search tuning function (up/down) with programmability (threshold setting)
RDS demodulator
Audio output available over Bluetooth audio interface or dedicated audio output
Control of FM via Bluetooth HCI or I2C
Adaptive filter to suppress narrow band interference in the FM channel

Audio
Single-ended stereo analogue output
16-bit 48kHz, digital audio bit stream output

Baseband and Software
Internal 48kbyte RAM, allows full speed data transfer, mixed voice and data, and full piconet operation, including all medium rate 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 Bluetooth v2.0 + EDR features incl. eSCO and AFH
Transcoders for A-law, μ-law and linear voice from host and A-law, μ-law and CVSD voice over air

Bluetooth Stack
CSR's Bluetooth Protocol Stack runs on the on-chip MCU
in the configuration: Standard HCI over UART