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Device Details
1
Device Details
Radio
Auxiliary Features
Transmitter
5.5dBm RF transmit power with level control from
Receiver sensitivity of -88dBm
LED[0] outputs
Baseband and Software
Fast AGC for enhanced dynamic range
Fully integrated synthesiser; requires no external
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
■ Compatible with crystals 8MHz to 32MHz
Audio Codec
CSR's Bluetooth Protocol Stack runs on-chip in a variety
of configurations:
Embedded Bluetooth mono headset solution
speaker drive capability and reference availability
Physical Interfaces
■ Common TX/RX terminal simplifies external ■ Crystal oscillator with built-in digital trimming
matching; eliminates external antenna switch ■ Power management includes digital shutdown and
■ BIST minimises production test time. No external wake up commands with an integrated low power
trimming is required in production oscillator for ultra low-power Park/Sniff/Hold mode
■ Bluetooth v2.1 + EDR specification qualified ■ Clock request output to control external clock
■ On-chip linear regulator; 1.8V output from a
2.2 to 4.2V input, can also be used to generate
■ microphone bias
on-chip 6?bit DAC over a dynamic range >30dB ■ Power-on-reset cell detects low supply voltage
■ Class 2 and Class 3 support without the need for an ■ Arbitrary power supply sequencing permitted
external power amplifier or TX/RX switch ■ Battery charger with programmable current (25 to
100mA) for Lithium Ion/Polymer battery
Receiver ■ LED intensity control for dedicated LED[1] and
■
■ Integrated channel filters
■ Digital demodulator for improved sensitivity and co-
channel rejection ■ Internal ROM
■ Real-time digitised RSSI available on HCI interface ■ 48KB internal RAM to support EDR. Allows full
■ speed data transfer, mixed voice and data, and full
Piconet operation
Synthesiser ■ Logic for forward error correction, header error
■
VCO, varactor diode, resonator or loop filter
■
host and A-law, μ-law and CVSD voice over air
■ Proximity Pairing (headset initiated pairing)
■ 15-bit resolution, 8kHz sampling frequency
■ Digital enhancements to add bass cut, side tone and Bluetooth Stack
treble boost
■ Analogue enhancements to support single-ended
■
■ Standard HCI
■
■
■
Synchronous serial interface up to 4Mbaud for
system debugging
UART interface with programmable baud rate up to
3Mbaud with an optional bypass mode
I2C compatible interface used to communicate with
an external EEPROM which contains all of the
device configuration (PS Keys)
Package Option
■ 8 x 8 x 0.9mm, 0.5mm pitch QFN
CS-127511-TOP2
Production Information
? Cambridge Silicon Radio Limited 2009
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