CM118B is a highly integrated single chip USB audio solution. All essential analog modules are embedded in CM118B, including dual DAC and headphone amplifier, ADC, microphone booster, PLL, crystal-less design, regulator, anti-pop circuitry and USB transceiver. Many features are programmable with jumper pins or external EEPROM such as microphone only mode for both mono and stereo microphone.
In addition, audio adjustment can be easily controlled via specific HID compliant volume control pins. For value added application, external codec or audio DSP can be connected to CM118B via I2S pin for playback path.