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CSR BC7810 藍牙芯片

名稱：IC集成電路

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簡介：Description CSR7810 offers uniquely voice processing and Bluetooth on a single chip, addressing OEMs need for noise redu...

國家高新技術企業
科技創新小巨人
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產品介紹

Description

CSR7810 offers uniquely voice processing and Bluetooth on a single chip, addressing OEMs’ need for noise reduction in their products. Users frequently struggle to make themselves heard on a mobile phone, due a multitude of reasons such as traffic, roadworks and people. In CSR7810 CSR offers both its industry-leading voice processing technology on its Kalimba DSP and Bluetooth in a small, efficient, cost-effective package.

Key features

3 Voice processing modes: dual-mic, single-mic and loudspeaker
CVC 2-mic noise suppression
Can be used as part of a fully compliant Bluetooth v3.0 + HS system
Low-power 1.5V operation, 1.8 to 3.6V I/O
Green (RoHS and no antimony or halogenated flame retardants)

Benefits

CVC 2-mic algorithm for normal handset use
CVC 1-mic algorithm for use with wired headsets
CVC hands-free algorithm for effective echo cancellation in loudspeaker mode
Stationary and dynamic noise removal enabled by dual microphone signal separation in normal handset use
Removes echo in the outbound speech signal
Send and receive EQs and AGCs enable an improved user experience allowing compensation for cost driven microphone and speaker selection
Dynamically adapts received speech intelligibility according to environmental noise at the near end for the benefit of the handset user
Integrated Bluetooth v2.1 + EDR eliminates the requirement for a separate chip

Product details

Voice Processing Software

Up to 32dB of noise suppression
3 modes of CVC operation
- 1-mic for use when a wired headset is attached; single microphone, single or dual earpieces
- 2-mic for use with dual-microphone handsets
- Loudspeaker/hands-free for use with handset loudspeaker mode with advanced echo cancellation
Dual-microphone signal separation
Full-duplex acoustic echo cancellation
TX/RX noise suppression
TX/RX parametric equalisation
TX/RX automatic gain control
Noise dependent volume control
RX adaptive equaliser
Side tone generation
GUI application provides real time monitoring and tuning

Stereo Audio CODEC

16-bit internal stereo CODEC
ADC for dual-microphone input
Integrated low-noise microphone bias
ADC sample rates: 8, 11.025, 16, 22.05, 24, 32 and 44.1kHz

Bluetooth Radio

Common TX/RX terminal simplifies external matching; eliminates external antenna switch
BIST minimises production test time
Bluetooth v2.1 + EDR specification compliant

Bluetooth Transmitter

6dBm 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

Bluetooth Receiver

Receiver sensitivity of -88dBm
Integrated channel filters
Digital demodulator for improved sensitivity and co-channel rejection
Real time digitised RSSI available on HCI interface
Fast AGC for enhanced dynamic range

Synthesiser

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

Physical Interfaces

Synchronous serial interface for system debugging
UART interface with data rates up to 3Mbits/s

Baseband and Software

Very low power Kalimba DSP coprocessor optimised for audio applications
8Mb of internal ROM
48KB of 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
CSR7810 interfaces to host processor using BCHS interface, ideal for cell phones and devices requiring many different Bluetooth profiles
Interface to host via CSR's BCHS Bluetooth Stack

Auxiliary features

Power management includes digital shutdown and wake-up commands with an integrated low-power oscillator for ultra-low power Park/Sniff/Hold mode
Clock request output to control external clock
On-chip regulators: 1.5V output from 1.8V to 2.7V input
Power-on-reset cell detects low-supply voltage
10-bit ADC available to applications

Package options

WLCSP 90-ball, 3.88 x 4.92 x 0.6mm, 0.4mm pitch

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