Description

The CM102S+ is a highly integrated single chip for USB stereo speakers that aims to be simple and cost-effective. With the minimum required external components, it is an ideal solution for building USB speaker systems. Unlike other USB speaker systems, it does not require any drivers for audio playback on all major operating systems and provides a plug-and-play experience for external digital audio playback.

Specifications and Features

Some notable features of the CM102S+ include:

• USB 2.0 Full-Speed Compatible and USB IF certification
• USB audio device class specification v1.0 Compatible
• 500mA USB bus powered 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
• Isochronous 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 drivers
• 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 CM102S+ is best suited for use in USB stereo speaker systems. It is a simple and cost-effective solution with minimum external components required.

Comparison

• Simple and cost-effective solution for building USB speaker systems
• No drivers required for audio playback on major operating systems
• USB 2.0 Full-Speed Compatible and USB IF certification for easy integration into various devices

• May not be suitable for more complex speaker systems