A Highly Integrated USB Audio Single Chip
DESCRIPTION
The CM119B is a highly integrated, crystal-free USB audio single chip solution optimized for USB headset, headphone, and dongle applications such as VoIP (Voice over Internet Protocol). All essential analog modules were embedded in the CM119B including dual DAC and earphone driver, ADC, microphone booster, PLL, regulator, and USB transceiver. It also supports 8GPIO pins. In addition, audio adjustment can be easily controlled via specific HID compliant volume control pins. Many features are programmable with jumper pins or external EEPROM. Vendors can customize unique USB VID/PID/Product String/Manufacture String and min/max/initial volumes to EEPROM. The CM119B also comes with an anti-pop noise circuits design and internal oscillator which can operate without an external crystal oscillator.
DESCRIPTION
The CM119B is a highly integrated, crystal-free USB audio single chip solution optimized for USB headset, headphone, and dongle applications such as VoIP (Voice over Internet Protocol). All essential analog modules were embedded in the CM119B including dual DAC and earphone driver, ADC, microphone booster, PLL, regulator, and USB transceiver. It also supports 8GPIO pins. In addition, audio adjustment can be easily controlled via specific HID compliant volume control pins. Many features are programmable with jumper pins or external EEPROM. Vendors can customize unique USB VID/PID/Product String/Manufacture String and min/max/initial volumes to EEPROM. The CM119B also comes with an anti-pop noise circuits design and internal oscillator which can operate without an external crystal oscillator.
BLOCK DIAGRAM
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