USB-SD Memory with multiple DMA channels, and data storing method thereof

摘要

USB interface and SD card interface, and having a plurality of DMA (Direct Memory Access) channel through the data storage device that reads and writes storage methods are disclosed. According to the present invention, there is provided a storage device having a USB interface and SD card interface, a plurality of flash memory; A plurality of flash control section for controlling reading and writing data to the flash memory; DMA control unit having a plurality of DMA channels to transfer data by the DMA unit in the flash memory, and received by means of the DMA data from the flash memory; Remove the USB interface and the data and the address in the received signal from the SD card interface, a microcomputer to deliver the separated data to the DMA controller; And in accordance with the separate address, and writes the received data to any location in the flash memory, characterized in that it includes an address decoder for calculating whether the read data from any location. Thereby, the data read and write speed of a flash memory is improved.