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FEATURES

? 128 MHz high performance CPU processor.

? Internal 512KB via ROM.

? Internal 4M bit SPI flash.

? -92dBm RX sensitivity and +9dBm TX output

power capability

? Logic for forward error correction, header

error control, access code correlation, CRC,

demodulation, encryption bit stream

generation, and whitening and transmit pulse

shaping.

? Fully qualified Bluetooth v4.1 + EDR feature

including eSCO and AFH.

? Internal 128KB SRAM. Allows full-speed

data transfer with full piconet support, mixed

voice and data, including all EDR packet

types.

? Audio transcoders for A-law, μ-law and linear

voice from host and A-law, μ-law and CVSD

voice over air.

? UART interface with programmable baud

rate up to 3Mbps for HCI communication.

? Multiple I2C interface for external EEPROM.

? Boot loader with external memory interface

for software debugging.

? Internal 32 KHz oscillator for low power

operation.

? QFN48 package.

? SPI flash support. Operation voltage is 3.3V.

? Battery power display support. Allows user to

use buttons to trigger a tone/speech tone or

a led, to prompt the current battery.

? SPP support. Increased SPP protocol, which

is used to transmit commands and data,

realize interaction control with other

equipment that supports SPP.

? AT Command support. Communicates with

MCU through the UART，controlled by the

MCU，or converted the command to

bluetooth command，sent to the mobile

phone to realize the control of the phone by

MCU.

? Working temperature range -40 to +80 ℃.

? Dual Mic Acoustic Noise Cancellation. Used

to eliminate the stationary and

non-stationary noise on Tx.

? Single-microphone echo Cancellation. Used

to cancel acoustic echo.

? Single-microphone noise suppression. Used

to reduce stationary noise on Tx and Rx

? Packet Loss Concealment. Used to restore

audio quality in difficult RF environment on

Rx.

? Equalizer. Supports six arbitrarily frequency

bands and the bandwidth can be adjusted.

? Automatic Gain Control. Performs automatic

volume adjustment of the signal on Tx and

Rx.

? Speech Tone. Encoded with SBC (Sub-Band

Codec) format and stored in FLASH, to

indicate general event from headset by

specified tone directly.

? Advanced multi-point support. Allows

connecting 2 devices (either phones or pads)

and handling multiple calls or music at the

same time.

? Bluetooth Air path parameter configuration.

? 24 bit Audio codec, -98dB SNR.

? Low radio power realizes 10+meter

communication (class2).

? Fast charger: 30 minutes charging time.

? No Balun filter required for connection.

? Battery monitor designed for smart phones.

? Watch dog for link loss alarm.

? Virtual Surround Sound for headphone and

loudspeakers support. Create a perceived

widened or surrounding sound image.

? Bass Enhancement support. Boosts the low

frequency part of the signal and leaves the

remaining part of the frequency range

unchanged in terms of loudness and timbre.

This gives the possibility to create extreme

bass enhancement.