DESCRIPTIONS AND OVERVIEW
CM102-A+/102S+ series is a highly integrated single chip for USB stereo speakers application. Minimum external components are needed for building an USB speaker system, which makes CM102-A+/102S+ a simple and very cost-effective solution. Since no driver is necessary for audio playback on all major OS. CM102-A+/102S+ provides a truly plug-and-play feature for external digital audio playback.

FEATURES
● USB 2.0 Full Speed Compatible and USB IF Certification
● USB audio device class specification v1.0 Compatible
● USB bus powered 500mA operation with suspend mode support
● USB audio function topology has 1 input terminal, 1 output terminal, and 1 feature unit
● Embedded high performance 16 bit stereo audio DAC
● Embedded Digital Control Power Amplifier for Speaker Driving
● Embedded power on reset block and Power amplifier enable / disable control pin
● Embedded X2 Modulation for Higher Audio Quality
● Embedded Anti-Pop Circuit with Internal Feedback Structure
● Embedded 5V to 3.3V Regulator with Voltage Level Detector for Single 5V External Power Supply
● Alternate zero bandwidth setting for releasing bandwidth on USB bus during inactive operation
● Single 12MHz crystal input with on-chip PLL and embedded USB transceiver
● Support Dynamic Range Control (DRC) Feature to Provide a Better Listen Experience
● Volume control input with simple external VR circuit
● Isochroous transfer using adaptive synchronization with internal PLL
● High performance 16-Bit Stereo, 48 / 44.1 KHz Sampling Rate for Audio Playback
● 3.3V IO with 5V tolerance; 3.3V core logics design
● GPIO pin for application specific usage
● Support S/PDIF output interface
● LED Indicator Pin During Playback
● Compatible with Win 98SE / Win ME / Win 2000 / Win XP, and Mac OS 9 / OS X without additional driver
● USB Software Drive Xear 3D Sound Technology With HRTF 3D, EAXTM, Speaker Shifter and Virtual 7.1CH effects for free bundle
● Compact 18 pin PDIP and SOP package