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
Transmitter
- 7dBm RF transmit power with level control from on-chip 6-bit DAC over a dynamic range typically >30dB
- Class 2 and Class 3 support without the need for an external power amplifier or TX/RX switch
Receiver
- Receiver sensitivity of -90dBm
- Integrated channel filters
- Digital demodulator for improved sensitivity and cochannel 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 16 and 26MHz or an external clock 12MHz to 52MHz
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Kalimba DSP
- Very low power Kalimba DSP coprocessor, 64MIPS, 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
- 4K x 32-bit program RAM, 8K x 24-bit + 4K x 24-bit data RAM
- 64 x 32-bit program memory cache when executing from ROM
Audio CODEC
- 16-bit resolution mono CODEC
- ADC and DAC
- Integrated amplifiers for driving 16Ω speakers; no need for external components
- Support for single-ended speaker termination and line output
- Integrated low-noise microphone bias
Physical Interfaces
- Synchronous serial interface for system debugging
- I²C compatible interface to external EEPROM containing device configuration data (PS Keys)
- UART interface with data rates up to 3Mbits/s
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