The CEC CSC3720 high-speed USB On-The-Go (OTG) embedded system integrated controller is designed for data system with cards and embedded flash control combined with voice recording function. It is built-in dual 480Mbps high-speed USB OTG, dual SD/MMC/MS series card interface (support SanDisk iNAND and eMMC) and ADPCM for recording 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.