CSR 7810 蓝牙芯片
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简介：CSR 7810 蓝牙芯片 offers uniquely voice processing and Bluetooth on a single chip, addressing OEMs need for noise reduction ...
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CSR 7810 蓝牙芯片 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.
CSR 7810 蓝牙芯片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)
CSR 7810 蓝牙芯片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 CSR 7810 蓝牙芯片speaker selection
■Dynamically adapts received speech intelligibility according to environmental noise at the near end for the benefit of CSR 7810 蓝牙芯片the handset user
■Integrated Bluetooth v2.1 + EDR eliminates the requirement for a separate chip
CSR 7810 蓝牙芯片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
CSR 7810 蓝牙芯片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
CSR 7810 蓝牙芯片Bluetooth Radio
■Common TX/RX terminal simplifies external matching; eliminates external antenna switch
■BIST minimises production test time
■Bluetooth v2.1 + EDR specification compliant
CSR 7810 蓝牙芯片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
CSR 7810 蓝牙芯片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
CSR 7810 蓝牙芯片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
CSR 7810 蓝牙芯片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 CSR 7810 蓝牙芯片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
CSR 7810 蓝牙芯片Package options
■WLCSP 90-ball, 3.88 x 4.92 x 0.6mm, 0.4mm pitch
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