CM119B/BN
INTRODUCTION
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.
PRODUCT FEATURES
  • Compliant with USB 2.0 Full Speed Operation
  • Compliant with USB Audio Device Class Specification v1.0
  • Supports USB Suspend / Resume Mode and Remote Wakeup with Volume Control Pins
  • Crystal-less Design 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, and 3 Feature Units
  • Jumper Pin for Mixer Unit Enable / Disable under Headset Mode
  • For Speaker Mode, USB Audio Function Topology has 1 Input Terminal, 1 Output Terminal, and 1 Feature Unit
  • Support One Control Endpoint, One Isochronous Out Endpoint, One Isochronous In Endpoint, and One Interrupt In Endpoint
  • Supports AES/EBU, IEC60958, S/PDIF Consumer Formats for Stereo PCM Data at S/PDIF Output
  • Volume Up, Volume Down, and Playback Mute Pins support USB HID device class for Host Control Synchronization
  • Record Mute Pin with LED Indicator for Record Mute Status
  • External EEPROM Interface for Vendor Specific USB VID, PID, and Volume Settings
  • 8 GPIO Pins
  • Improved ESD Protection Mechanism
  • Built-in Pop Noise Reduction Circuitry
  • Jumper Pin to Set the Power Mode (100mA or 500mA, Bus Power or Self Power)
  • Isochronous Transfer uses Adaptive Mode with Internal PLL for Synchronization
  • 48K / 44.1KHz Sampling Rate for Both Playback and Recording for Headset and Headphone Mode
  • Soft Mute Function
  • Embedded 16-Bit Stereo Audio DAC with Earphone Phone Amplifier
  • Embedded 16-Bit Mono ADC Input with Microphone Boost
  • Embedded Power-On-Reset Block
  • Embedded 5V to 3.3V Regulator for Single External 5V Operation
  • CM119B is 48 Pin LQFP Package (7m x 7m, 12-12-12-12)
  • CM119BN is 48 Pin QFN Package (5m x 5m, 14-10-14-10)
BLOCK DIAGRAM
USB Audio,PCIe audio,USB audio ic,USB sound chip
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