DESCRIPTION

The HS-100C is a highly-integrated,crystal-free USB audio single chip solution optimized typically for USB headset,headphone,and dongle(wireless adapter enabled)applications.All necessary analog and digital modules were embedded in the HS-100C,including stereo DAC and earphone driver;mono ADC;microphone pre-amp booster;PLL;regulator;and USB transceiver.Many features of the HS-100C are programmable with jumper pins or external EEPROM.Customers can customize unique USB VID/PID/Product String/Manufacture String and max/min/initial volume settings via an external EEPROM.In addition,the HS-100C supports HID compliant volume control pins such as Playback Mute,Volume Up/Down and a Record Mute pin which interacts with the playback operation LED and record mute LED control pins.The HS-100C also comes with an anti-pop noise circuits design and internal oscillator which can operate without an external crystal oscillator.

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

?On-chip oscillator that provides reference sources for PLL and embedded USB transceiver

?Jumper pin for Headset Mode(Playback+Recording)and Speaker/Headphone Mode(Playback Only)

?Jumper pin for Mixer Unit enable/disable under Headset Mode

?Jumper pin for Power Mode setting

?USB audio function topology that has 2 Input Terminals,2 Output Terminals,1 Mixer Unit,1 Selector Unit,and 3 Feature Units.(Headset Mode)

?USB audio function topology that has 1 Input Terminal,1 Output Terminal,and 1 Feature Unit.(Speaker Mode)

?Anti-pop noise design for device plugged and vice-versa.