■
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
Baseband and Software
■
16Mbit external Flash
■
48Kbyte internal RAM, allows full-speed data transfer, mixed voice/data and full piconet support
■
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
■
SPI with clock speeds up to 64MHz in Master mode and 32MHz in Slave mode
■
I2C master compatible interface
■
UART interface with programmable data rate up to 3Mbits/s with an optional bypass mode
■
USB v2.0 interface
■
Bi-directional serial programmable audio interface supporting PCM, I2S and SPDIF formats
■
Two LED drivers with faders
Kalimba DSP
■
Very low power Kalimba DSP co-processor, 64MIPS, 24-bit fixed point core
■
SBC decode takes approximately 4mW power consumption while streaming music
■
Single-cycle MAC; 24 x 24-bit multiply and 56-bit accumulator
■
32-bit instruction word, dual 24-bit data memory
■
6K x 32-bit program RAM, 16K x 24-bit + 12K x 24- bit data RAM
■
64-word x 32-bit program memory cache when executing from Flash
Stereo Audio Codec
■
16-bit internal stereo codec
■
Dual ADC and DAC for stereo audio
■
Integrated amplifiers for driving 16
Ω
speakers; no need for external components
■
Support for single-ended speaker termination and line output
■
Integrated low-noise microphone bias
■
ADC sample rates are 8, 11.025, 16, 22.05, 32 and 44.1kHz
■
DAC sample rates are 8, 11.025, 12, 16, 22.05, 24, 32, 44.1 and 48kHz
