This post explains for the semiconductor CSR8670.
The Part Number is CSR8670.
The function of this semiconductor is Low-power Solution for DSP Intensive Audio Applications.
Manufacturers : CSR
Preview images :
Features ■ ■ ■ BlueCore® CSR8670™ BGA Low-power Solution for DSP Intensive Audio Applications Production Information CSR8670C Issue 2 ■ Bluetooth® v3.0 specification fully qualified software Bluetooth v4.0 specification compliant hardware Radio includes integrated balun and RF performance of 10dBm transmit power and -90dBm receive sensitivity 80MHz RISC MCU and 80MIPS Kalimba DSP 16Mb internal flash memory (64-bit wide, 45ns); optional support for 64Mb of external SPI flash Stereo codec with 2 channels of ADC and up to 6 microphone inputs (includes bias generators and digital microphone support) Support for CSR’s latest CVC technology for narrow-band and wideband voice connections including wind noise reduction Audio interfaces: I²S, PCM and SPDIF Serial interfaces: UART, USB 2.0 full-speed, master and slave bit-serialiser (I²C and SPI) Integrated dual switch-mode regulators, linear regulators and battery charger 3 hardware LED […]