Specification
Radio
- Common Tx/Rx terminal simplifies external matching; eliminates external antenna switch
- BIST minimises production test time. No external trimming is required in production
- Full RF reference designs available
- Bluetooth® v1.2 Specification compliant
- Antenna matching and filtering within the IC
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 8 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
Auxiliary features
- Crystal oscillator with built-in digital trimming
- Power management includes digital shut down, and wake up commands with an integrated low power oscillator for ultra-low power Park/Sniff/Hold mode
- 'Clock request' output to control an external clock
- On-chip linear regulator; 1.8V output from a 2.2‑4.2V input
- Power-on-reset cell detects low supply voltage
- Arbitrary power supply sequencing permitted
- 8-bit ADC and DAC available to applications
Kalimba DSP core
- DSP co-processor, 32MIPS, 24-bit fixed point core
- Single cycle MAC; 24 x 24-bit multiply and 56-bit accumulator
- 32-bit instruction word, dual 24-bit data memory
- 4kword program memory, 2 x 8kword data memory
- Flexible interfaces to BlueCore™3 subsystem
Baseband and software
- Internal 8Mbit Flash for complete system solution
- Internal 32Kbyte RAM, allows full speed data transfer, mixed voice and data, and full piconet operation
- 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
Physical interfaces
- Synchronous serial interface up to 4Mbaud for system debugging
- UART interface with programmable baud rate up to 1.5Mbaud with an optional bypass mode
- Full speed USB v1.1 interface supports OHCI and UHCI host interfaces
- Bi-directional serial programmable audio interface supporting PCM, I2S and SPDIF formats
- Optional I2C™ compatible interface
Stereo audio CODEC
- 16-bit resolution, standard sample rates of 8kHz, 11.025kHz, 16kHz, 22.05kHz, 32kHz, 44.1kHz and 48kHz (DAC only)
- Dual ADC and DAC for stereo audio
- Integrated amplifiers for driving microphone and speakers with minimum external components
Bluetooth stack
- CSR's Bluetooth protocol stack runs on the on-chip microcontroller in a variety of configurations:
- Standard HCI (UART or USB)
- Fully embedded RFCOMM
- Customised builds with embedded application code
Package options
- 120-ball VFBGA, 7x7mm