热销中 CM6400 骅讯USB单芯片音频解决方案

　　Description and Overview

　　CM6400 is an advanced highly-integrated USB audio single chip optimized for featured USB headset or other audio applications. All necessary analog and digital modules are embedded in CM6400, including stereo DAC,16/32-ohms headphone amplifier, capless HP-out, stereo ADC,microphone pre-amplifier, independent mic voltage bias,PLL, power regulator, and USB transceiver.Moreover,CM6400 also integrates 5-band hardware digital equalizer (EQ) processing unit with 4 default preset modes (default/music,movies, gaming,communication).Customers could also customize full EQ preset parameters for compensating the headphone Sound Pressure Level (SPL) performance over all in-band audio frequencies. In addition,embedded Mic Auto-Gain-Control (AGC) functionality could automatically adjust variant sound input signals to avoid large signal clipping caused by environmental noises, acoustics echo, or speaking too loudly, and also maintain more constant and comfortable recording level range during voice communication.Clipping-Detection LED feature could also give users a feedback alert indicator for too-large sound input when recording.

　　CM6400 supports standardHID compliant volume control pins and playback control pins including Play_Pause / STOP / Previous / Next hot-key buttons. It also provides analog DC VR volume control option.CM6400 is compliant with Windows®Vista/7 WHQL logo program audio quality and stereo Mic requirements and delivers ≧96dB Signal-to-Noise Ratio high-quality audio for both DAC and ADC.Both DAC/ADC support 16-bit resolution and variant 48KHz,44.1KHz,32KHz,22.05KHz,16KHz,11.025KHz, 8KHz sampling rates.

　　With versatileCM6400 USB single-chip audio solution, customers could make more valuable,differentiated, but cost-effective featured USB headsets or other audio applications.