Description

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

Specifications and 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
• 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

Application Scenarios

The CM102-A+/102S+ series is ideal for USB stereo speakers application, especially for those who require a simple and cost-effective solution.

Comparison

• Simple and very cost-effective solution
• Minimum external components
• Truly plug-and-play feature for external digital audio playback
• No driver is necessary for audio playback on all major OS

• The compact 18 pin PDIP and SOP package may limit the functionality of some extensive audio projects