CM119B/CM119BN is a highly integrated single chip USB audio solution. CM119B is in 48LQFP package and CM119BN is in 48 QFN package. All essential analog modules are embedded in the chip, including dual DAC and headphone amplifier, mono 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 speaker only mode and headset mode. In addition, audio adjustment can be easily controlled via specific HID compliant volume control pins.