The CEC CSC3730 high-speed USB On-The-Go (OTG) embedded system integrated controller is designed for data system with cards and embedded flash control combined with audio function. It is built-in dual 480Mbps high-speed USB OTG, dual SD/MMC/MS series card interface (support SanDisk iNAND and eMMC), MP3 and ADPCM for audio function, Uart/I2C/SPI/PWM serial interface, and up to 10 configurable I/O ports. It has special mechanism for products with fast data transfers requirement with either two storage devices. With dual ports capability, it can easily connect two USB devices or two memory cards and interoperability with each others.

The CSC3730 also provides audio features for voice record and music playback, which makes its applications more diversity.