USB 2.0 IrDA & USB Audio

USB Virtual 7.1 Channel Sound Adapter


  • 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

  • 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, 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

  • Alternate zero Bandwidth setting for releasing Playback Bandwidth on USB Bus

  • when this Device is Inactive

  • Supports AES/EBU, IEC60958, S/PDIF Consumer Formats for Stereo PCM Sata

  • at S/PDIF Output

  • Volume Up, Volume Down, and Playback Mute support USB HID for Host

  • Control Synchronization

  • Recrd Mute Pin with LED Indicator for Record Mute Status

  • External EEPROM Interface for Vendor Specific USB VID, PID, and Serial

  • Number

  • EEPROM Write Function via Vendor Specific request for Mass Production

  • Convenience

  • Customized Embedded VID, PID, and Product String by Customer Request

  • 4 GPIO Pins with Read/Write via HID

  • Jumper Pin for Output Voltage Swing (3.5V or 2.5V)

  • Jumper Pin for Power Mode Setting

  • Isochronous Transfer uses Adaptive Mode with Internal PLL for Synchronization

  • 48K/44.1KHz Sampling Rate for both Playback and Recording

  • Soft Mute Function

  • Embedded High Performance 16 bit audio DAC with Earphone Phone Buffer