CM6120L series is a highly integrated single chip for USB speaker application with 2-Channel Class-D output. Minimum external components are needed for building an USB speaker system, which makes CM6120L a simple and very cost-effective solution. Since no driver is necessary for audio playback on all major OS. CM6120L provides a truly plug-and-play feature for external digital audio playback.
For energy saving, USB suspend mode and resume is supported by CM6120L. This new single chip not only support 44.1KHz and 48KHz sampling rate playback but also with X2 modulation for hi-frequency quality. Better yet, simplify anti-pop noise solution was embedded on chip for general pop noise issues. All of the functions have been approved by USB IF certification program. This one chip solution not only embedded USB transceiver but also integrated digital control power amplifier function for USB digital sound application.
CM6120L support USB standard HID interface which provide Vol_up / Vol_dn / Play_mute / buttons for pure digital volume and media play control. CM6120L also provide EEPROM (24c02) connection interface for customers to define vendor specific VID / PID / Manufacture String / Product String / default volume setting, and even special hardware configuration.
Moreover, CM6120L support audio line-in interface for external audio analog source, CM6120L provides high performance analog modulator path for internal high-efficient power amplifier.
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