1 Device Details
Radio
■
Common TX/RX terminal simplifies external
matching; eliminates external antenna switch
■
BIST minimises production test time
■
Bluetooth v2.1 + EDR Specification compliant
Transmitter
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+8dBm 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
■
Receiver sensitivity of -90dBm
■
Integrated channel filters
■
Digital demodulator for improved sensitivity and co-
channel rejection
■
Real-time digitised RSSI available on HCI interface
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Fast AGC for enhanced dynamic range
Synthesiser
■
Fully integrated synthesiser requires no external
VCO varactor diode, resonator or loop filter
■
Compatible with crystals between 12 and 52MHz or
an external clock
■
Accepts 14.40, 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
Baseband and Software
■
Internal 6-Mbit ROM
■
Internal 48-Kbyte 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
mandatory Bluetooth v2.1 + EDR 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
Auxilliary Features
■
Crystal oscillator with built-in digital trimming
■
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
■
On-chip regulators: 1.5V output from 1.7V to 2.8V
input and 1.9V output from 2.7V to 5.6V input
■
On-chip high-efficiency switched-mode regulator;
1.5V output from 2.2V to 4.9V input
■
Power-on-reset cell detects low supply voltage
■
Arbitrary sequencing of power supplies permitted
■
10-bit ADC and 8-bit DAC available to applications
■
Battery charger with programmable current
(25-100mA) for Lithium Ion/Polymer battery
■
Two LED drivers with faders
Physical Interfaces
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Synchronous serial interface up to 4Mbaud for
system debugging
■
UART interface with programmable baud rate up to
3Mbaud with optional bypass mode
■
Optional I
2
C compatible interface
Audio CODEC
■
AuriStream (16, 24, 32, 40 kbps) CODEC, which
offers significant power reduction over the CVSD
based system when used at both ends of the link
■
16-bit resolution, 8kHz sampling frequency
■
Digital enhancements to add bass cut, side tone and
treble boost
■
Analogue enhancements to support single-ended
speaker drive capability and reference availability
Bluetooth Stack
CSR's Bluetooth Protocol Stack runs on the on-chip
MCU in the following configuration:
■
Standard HCI over UART
Package Option
■
48-lead 7 x 7 x 0.9mm 0.5mm pitch QFN
Device Details
CS-114838-DSP2
Advance Information
©CSR plc 2007
Page 5 of 16
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