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CSR BC7830 藍(lán)牙芯片

名稱：IC集成電路

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簡(jiǎn)介：BC7830 addresses the need for diverse wireless feature sets in an even smaller form factor than CSR’s industry-leading B...

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Description

BC7830圖片
 

BC7830 addresses the need for diverse wireless feature sets in an even smaller form factor than CSR’s industry-leading BC7820. With Bluetooth, GPS and FM Rx/Tx, BC7830 heralds a previously unprecedented level of integration. BC7830 measures a mere 11mm2 making it the world’s smallest GPS combination device, with the nearest competing device being over 50% larger.

Key features

  • Multi-band GNSS radio
  • Fully qualified Bluetooth v2.1 + EDR system with on-chip balun
  • BC7830 can be used as part of a fully compliant Bluetooth v3.0 + HS system
  • Integrated FM radio receiver and transmitter with full RDS/RBDS encoding and decoding, including support for TMC encoding and decoding
  • Both analogue and digital stereo audio input and output stages
  • Integrated digital core and analogue regulators
  • Green (RoHS and no antimony or halogenated flame retardants)
 

Benefits

  • Includes a multi-band GNSS radio and decimation chain optimised for use with a software GPS receiver. It is specifically architected to support multiple radio technologies.
  • It is capable of operating within challenging RF environments such as within a cellular phone using a clock in the range 19.2MHz to 52MHz. Also, it can be used in PNDs or PMPs. eGPS Fine Time and Fine Frequency Aiding are also supported using the high-precision signal timestamp mechanism via a PIO.
  • Includes AuriStream Bluetooth audio transfer which offers significant power reduction over the CVSD-based system when used at both ends of the link.
  • The device incorporates auto-calibration and BIST routines to simplify development, type approval and production test.
  • Can support receiving or transmitting FM radio broadcasts with simultaneous use of Bluetooth voice or data connections and GPS.


 

Product details

GPS Radio

  • GNSS radio with balanced RF input
  • Integral on-chip LNA with 2.5dB noise figure
  • Optional support for an external LNA

GPS Receiver

  • GNSS receive chain comprising digital decimator, quantiser and packet builder
  • Coaster for host MIPS/power-saving
  • Tone canceller for interference mitigation
  • Current consumption 45mA for simultaneous BT HV3 connection and GPS operation

Bluetooth Radio

  • On-chip balun (50Ω impedance in Tx and Rx modes)
  • No external trimming is required in production
  • Bluetooth v2.1 + EDR specification compliant

Bluetooth Transmitter

  • 10dBm RF transmit power with level control from on-chip 6-bit DAC over a dynamic range >30dB
  • Class 1, Class 2 and Class 3 support without need for external power amplifier or TX/RX switch

Bluetooth Receiver

  • -93dBm π/4 DQPSK sensitivity
  • Integrated channel filters
  • Digital demodulator for improved sensitivity and cochannel rejection
  • Real time digitised RSSI available on HCI interface
  • Fast AGC for enhanced dynamic range
  • Channel classification for AFH

FM Receiver

  • -108dBm sensitivity
  • Simultaneous operation with Bluetooth
  • Support of US/Europe (87.5 to 108MHz) and Japanese (76 to 90MHz) FM bands
  • Wide dynamic range AGC
  • Soft mute and stereo blend
  • Adjustment-free stereo decoder and AFC
  • Autonomous search tuning function (up/down) with programmability (threshold setting)
  • RDS and RBDS demodulator
  • Audio output available over Bluetooth audio interface or dedicated audio output
  • Adaptive filter to suppress narrow band interference in the FM channel

FM Transmitter

  • 118dBμV RF software-controllable transmit power level, specifically designed to overcome global differences in regulatory limits and variations in antenna implementations
  • Simultaneous operation with Bluetooth
  • Support of US/Europe (87.5 to 108MHz) and Japanese (76 to 90MHz) FM bands
  • RDS modulator PA output stage capable of PS, AF, PTY, RT, TP and TA transmissions
  • PCM/I2S digital audio input supported
  • Single-ended stereo analogue audio input

Synthesiser

  • Fully integrated synthesiser requires no external VCO varactor diode, resonator or loop filter
  • Compatible with external clock 19.2MHz to 52MHz

Audio

  • Single-ended stereo analogue audio line input and output
  • Digital audio input and output

Baseband and Software

  • AuriStream® (16, 24, 32, 48, 64, 80kbps) CODEC offering significant power reduction over the CVSDbased system when used at both ends of the link
  • Internal RAM allows full-speed data transfer, mixed voice and data, and full piconet operation, including all medium rate packet types
  • Logic for forward error correction, header error control, access code correlation, CRC, demodulation, encryption bit stream generation, whitening and transmit pulse shaping. Includes support for eSCO and AFH
  • Transcoders for A-law, μ-law and linear voice from host and A-law, μ-law and CVSD voice over air

Physical Interfaces

  • SDIO and CSPI (CSR SPI)
  • Synchronous serial interface up to 4Mbits/s for system debugging
  • UART interface with programmable baud rate up to 4Mbits/s
  • Two digital audio PCM/I2S interfaces (input and output)
  • Analogue stereo

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
  • Device can run in low power modes from an external 32.768kHz clock signal
  • Auto Baud Rate setting, depending on host interface
  • On-chip linear regulators: 1.8V output from typical 2.3-4.8V input and second low dropout linear regulators producing core voltages from 1.8V
  • Power-on-reset cell detects low supply voltage
  • Arbitrary sequencing of power supplies is permitted

Bluetooth Stack

  • CSR's Bluetooth Protocol Stack runs on the on-chip MCU in the configuration Standard HCI over UART, SDIO or CSPI

Package

  • 55-ball 3.2 x 3.6 x 0.6mm, 0.4mm pitch WLCSP

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