BlueCore™5-Stereo (ROM)

General Description
The BlueCore™5-Stereo is a single-chip radio and baseband IC for Bluetooth® 2.4GHz systems.
BlueCore™5-Stereo contains 8Mbit ROM. When used with CSR Bluetooth® stack, it provides a fully compliant Bluetooth® system to v2.0+EDR of the specification for data and voice.
BlueCore™5-Stereo contains the Kalimba DSP co-processor with double the MIPS of BlueCore™3-Multimedia, allowing for support of enhanced audio applications.
BlueCore™5-Stereo 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.
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.

Radio
Common Tx/Rx terminal simplifies external matching; eliminates external antenna switch
BIST minimises production test time
Bluetooth® v2.0+EDR specification compliant

Transmitter
+6dBm 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
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

Synthesiser
Fully integrated synthesiser requires no external VCO, varactor diode, resonator or loop filter
Compatible with crystals between 8MHz and 32MHz (in multiples of 250kHz or an external clock
Accepts 7.68, 14.44, 15.36, 16.2, 16.8, 19.2, 19.44, 19.68, 19.8 and 38.4MHz TCXO frequencies for GSM and CDMA devices with sinusoidal or logic level signals

Baseband and Software
Internal 8Mbit ROM
Internal 48kbyte RAM, allows full speed data transfer, mixed voice/data and full piconet
Logic for forward error correction, header error control, access code correlation, CRC, demodulation, encryption bit stream generation, whitening and transmit pulse shaping
Transcoders for A-law, μ-law and linear voice from host and A-law, μ-law and CVSD voice over air

Kalimba DSP
Very low power Kalimba DSP co-processor, 64MIPS, 24-bit fixed point core
Approximately 60mW power consumption when streaming music
Single cycle MAC; 24 x 24-bit multiply and 56-bit accumulator
32-bit instruction word, dual 24-bit data memory
24kbyte (6kword) program RAM, 24kbyte + 24kbyte (8kword + 8kword) data RAM
64 words x 32-bit program memory cache when executing from ROM

Stereo Audio CODEC
Very high quality internal stereo CODEC
Dual ADC and DAC for stereo audio
Integrated amplifiers for driving 16Ω speakers; no need for external components
Support for single-ended speaker termination
Integrated low-noise microphone bias
16-bit resolution, standard sample rates of 8kHz, 11.025kHz, 16kHz, 22.05kHz, 32kHz, 44.1kHz and 48kHz (DAC only)

Bluetooth Stack
CSR's Bluetooth Protocol Stack runs on the on-chip MCU in a variety of configurations:
Standard HCI (UART or USB)
Fully embedded profiles of applications including DSP code
Customised builds with embedded application code