Bluecore™6-ROM

General Description
The BlueCore™6-ROM is a single-chip radio and baseband IC for Bluetooth 2.4MHz systems including enhanced data rates (EDR) to 3Mbits/s.
With the on-chip CSR Bluetooth software stack, it provides a fully compliant Bluetooth system to v2.1 +EDR of the specification for data and voice communications.

Applications
Cellular handsets
Personal Digital Assistants (PDAs)
Automotive
Personal Navigation Devices

BlueCore™6-ROM has been designed to reduce the number of external components required which ensures production costs are minimised.
BlueCore™6-ROM includes AuriStream, which offers significant power reduction over the CSVD-based system when used at both ends of the link.
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 v2.1 + EDR specification.
To improve the performance of both Bluetooth 802.11b/g co-located systems a wide range of coexistence features are available including a wide 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 v2.1 + EDR Specification compliant

Bluetooth Transmitter
+6dBm RF transmit power with level control from on-chip 6-bit DAC over a dynamic range >30dB

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 crystals between 16 and 26MHz or an external clock between 12 and 52 MHz

Baseband and Software
AuriStream (16, 24, 32, 40 kbps) CODEC
Internal 48kbyte RAM, allows full speed data transfer, mixed voice and 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 Bluetooth v2.1 features including ESCO and AFH
Transcoders for A-law, μ-law and CVSD voice over air

Physical Interfaces
SDIO and CSPI
Synchronous serial interface up to 4Mbits/s for system debugging
UART interface with programmable data rate up to 4Mbaud
Bi-directional serial programmable audio interface supporting PCM and I2S formats

Auxiliary Features
Crystal oscillator with built-in digital trimming
Clock request output to control an external clock
Device can run in low-power modes from an external 32768Hz clock signal
Power management includes digital shutdown and wake up commands with an integrated low-power oscillator for ultra low power Park/Sniff/Hold mode
Auto Baud Rate setting, subject to host interface in use
On-chip linear regulators: 1.8V output from typical 2.7-5.5V input to power I/O ring (load current 100mA) and second low dropout linear regulator producing 1.5V core voltage from 1.8V
Power-on-reset cell detects low supply voltage
Arbitrary sequencing of power supplies is permitted

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