CSR8640

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CSR8640 Chipset

Single Chip Bluetooth Audio ROM Platform

The CSR8640 chipset is a 2 Mic Stereo ROM solution designed to support our customers develop a range of highly differentiated home entertainment and wearable audio products - more easily, in less time and cost effectively.

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CSR8640 Specs

Bluetooth

Bluetooth Version

  • Bluetooth 4.1

Bluetooth Radio

  • Up to +9dBm output power (typical)
  • -92dBm receiver sensitivity (basic rate, typical)

Bluetooth Profiles

  • HFP v1.6
  • AVRCP v1.4
  • A2DP v1.2
  • DI v1.3
  • HSP v1.2

USB

USB Version

  • USB 2.0 (Full Speed)

USB Support

  • Supports USB charger detection

Audio

Audio Technology

  • Qualcomm® cVc™ audio technology
  • Voice recognition technology
  • Talk-Time Extension
  • HD Voice

A2DP multipoint support

  • 2 A2DP sources

Analog Microphone Input

  • 2 analog mics

Digital Microphone Input

  • 2 digital mics

Equalizer

  • 5-band EQ

HFP multipoint support

  • 2 handsets

Microphone Bias Generator

  • 1 microphone bias generator

DSP

DSP Technology

  • Qualcomm® Kalimba™ DSP

DSP Bit Architecture

  • 24-bit

MCU

MCU Clock Speed

  • 80MHz

Power Management

Maximum Input Voltage

  • 3.3V

Charging

Maximum Current

  • 200 mA on chip
  • 500 mA with external transistor

Memory

RAM

  • 56KB RAM

Interface

Supported Interfaces

  • UART
  • USB 2.0
  • PCM
  • I²S
  • SPI
  • I²C

Input/Output

ADC

  • 2 ADCs

DAC

  • 1 DAC

Maximum PIOs

  • 22

PWM (LED)

  • 3

Package

Package Type

  • 5.5 x 5.5 x 1 mm 0.5 mm pitch VFBGA