CM119A Overview
CM119A is a highly integrated single chip USB audio controller specifically for VoIP (Voice over internet protocol) application. All essential analog modules are embedded in CM119A, including dual DAC and earphone driver, ADC, microphone booster, PLL, regulator, and USB transceiver. It’s also support 8GPIO pins and buzzer output pin for VoIP application.
CM119A Key Features
- pliant with USB 2.0 Full Speed Operation pliant with USB Audio Device class specification v1.0
- Supports USB Suspend/Resume Mode and remote Wakeup with Volume Control pins
- Single 12MHz Crystal input with on-chip PLL and embedded USB transceiver
- Jumper Pin for Speaker Mode (Playback Only) or Headset Mode (Playback + Recording)
- For Headset Mode, USB audio function topology has 2 Input Terminals, 2 Output Terminals, 1 Mixer Unit, 1 Selector Unit,
- Jumper Pin for Operation System Mixer Unit Enable/Disable under Headset Mode
- 0 dB 16 steps
- 12.288/ 11. 2896 MHz
- USB interface
- > 3. 3 regulator