USB Audio Codec improved on HS-100 with crystal-less design

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Cmedia’s HS-100B is highly-integrated USB audio single chip optimized for consumer headset solutions. This document is a user guide for the demonstration boards (demo boards) of HS-100B, which describes the board’s functions, I/O jacks, LEDs, controls and some user notes.

HS-100B supports standard HID compliant volume control pins and playback mute/ recording mute, and it also offers playback operation and playback/record mute LED indicators in order that users know the current status.

All necessary analog and digital modules are embedded in HS-100B, including stereo DAC, headphone driver, Mono ADC, microphone pre-amp booster, PLL, regulator, and USB transceiver.

In addition, internal cost effective embedded oscillator generates steady clock signal for the operating clock, so the system designers of the products can reduce the BOM cost by eliminating the crystal oscillator and the necessary circuit around it. End users will get good sound experience either on PC or on game console.

Symmetry Electronics (and its e-commerce division: is an authorized Cmedia distributor.


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Cmedia HS-100B User Manual

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