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Product Descriptions

The CM118B is a highly integrated, crystal-less USB audio single chip solution optimized for USB headset, headphone, dongle, microphone and 

application such as VoIP (voice over Internet protocol). All essential analog modules are embedded in the CM118B, including dual DAC and ADC, earphone driver, microphone booster, PLL, regulator, and USB transceiver. It also supports 3 GPIO pins. In addition, audio adjustment can be easily controlled via specific HID compliant volume control pins. Many features such as headset, headphone and microphone only topologies are programmable with jumper pins. Vender can customize unique USB VID / PID / Product String / Manufacture String and min/max/initial volumes to the external EEPROM. The CM118B also offers anti-pop noise circuits design and internal oscillator which can operate without an external crystal oscillator.

Product Features

? Compliant with USB 2.0 Full Speed Operation

? Compliant with USB Audio Device Class v1.0

? Supports USB Suspend/Resume Mode and Remote Wakeup with Volume Control pins

? On-chip oscillator to provide reference sources for PLL and embedded USB transceiver

? Jumper pin for Headset Mode (Playback + Recording), Microphone Mode (Stereo and Mono Recording),or Speaker/Headphone Mode (Playback Only)

? Jumper pin for Mixer Unit enable/disable under Headset Mod, and Power Mode setting

? I2C interface to access internal registers, and I2S Output for external DAC

? In Headset Mode, USB audio function topology has 2 Input Terminals, 2 Output Terminals, 1 Mixer Unit, 1 Selector Unit, and 3 Feature Units

? In Speaker Mode, USB audio function topology has 1 Input Terminal, 1 Output Terminal, and 1 Feature Unit.

? In Microphone Mode, USB audio function topology has 1 Input Terminal, 1 Output Terminal, 1 Selector Unit and 1 Feature Unit.

? Anti-pop noise design for plug and unplug.

  Specifications

Actual product photos

Product Data Book：

For more product information, please download the PDF

Payment&Transportation

Official Certificate&Certificate

Multiple product supply

Company office environment

Warehouse Real Shot

Standard packaging

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