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® v2.1+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
- Class1 support using external power amplifier, with RF power controlled by an internal 8-bit DAC
- Supports DQPSK (2Mbps) and 8DPSK (3Mbps) modulation
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
- Supports DQPSK and 8DPSK modulation
- Channel classification
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, 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 high-efficiency switch-mode regulator, 1.8V output from a 2.5 - 4.2V input
- Alternative on-chip linear regulator; 1.8V output from a 2.2 - 4.2V input
- Clock for low power mode can be either supplied from an external 32kHz clock signal or an internal oscillator
- Auto baud rate setting for different TCXO frequencies
- Power-on-reset cell detects low supply voltage
- Arbitrary power supply sequencing permitted
- 8-bit ADC and DAC available to applications
Baseband and software
- Internal 48Kbyte RAM, allows full speed data transfer, mixed voice and data, and full Piconet operation, including all medium rate preset 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 v1.2 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
Physical interfaces
- Synchronous serial interface up to 4Mbaud for system debugging
- UART interface with programmable baud rate up to 3Mbits/s with an optional bypass mode
- Full speed USB v2.0 interface supports OHCI and UHCI host interfaces
- Synchronous bi-directional serial programmable audio interface
- Optional I2C™ compatible interfaces
- Audio PCM interface
- Optional co-existence interfaces
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
- 84-ball VFBGA, 6x6mm
- CSP, 4x3.8mm