CM6642 Datasheet | C-Media

DESCRIPTION The CM6642 is a low power single chip USB 2.0 High-Speed audio codec built-in MCU for flexible applications. With integrated PWM LED driver and two (2)-channel ADC/DAC and S/PDIF interface that makes it suitable for headset, headphone, docking, speakers, and microphone applications. The internal MCU can also be developed to a lot of different applications, such as Microsoft™ Lync / Skype/Vo IP device, Mobile Phone or Tablet/Slate docking device. The CM6642 is patible with USB Audio Class 1.0 and USB 2.0 Full-Speed, thus it can plug & play without any additional software installation on major operating systems. The internal DAC support from 44.1~192 KHz and ADC support from44.1~192 KHz sampling rate with 16/24 bits resolution. The CM6642 also integrates 16K Byte OTP and crystal but requires few passive ponents to make a finish product. Thus, it can save the total BOM cost and PCB area can be smaller. FEATURES - USB 1.1/2.0 Full-Speed and High-Speed pliant - USB Audio Class 1.0 and 2.0 pliant - Two (2)-channel DAC for audio output interface - Two (2)-channel ADC for audio input interface - Built-in S/PDIF transmitter - Built-in Hardware ANC (Active Noise Cancellation) - Supports USB suspend/resume/reset functions - Embedded low-power MCU with 16K Byte OTP - Supports OMTP and CTIA auto switch on a 4-pole jack - Integrated PWM LED driver - Master/Slave H/W I2C/SPI control interface for external audio devices or FLASH access - Supports embedded oscillator without external crystal - Built-in Class-G Ultra low Power headphone amplifier - On chip watchdog timer - Audio jack detection function - Support JD,4-Button Headset in line with customizable multi function control support BLOCK DIAGRAM USB Interface Control Bus Analog JD Internal Clock OTP 16K ADC ADC ADC DAC DAC Mixer SLEEVE RING2 LINE_L LINE _R HP OUT_L HP OUT_R SPDIF OUT GPIO x 10 PWM LED X 1 I2C, SPI Page 1 / 13 Rev.0.91 .cmedia..tw Copyright© C-Media Electronics Inc. USB 2.0...