Method and system for improving SDIO functionality

The invention relates to the technical field of information transmission, and relates to a method and system for improving SDIO functionality. The method comprises the steps that a HOST module is added, the module supports a central control chip of an RISC-V framework, and the module communicates with peripheral equipment through an AXI protocol; a bus bridge module is configured and supports an AXI to AHB protocol and an AXI to APB protocol; a USI CTRL module is integrated, conventional functions, including UART, SPI and IIC, of USI are supported, and the USI is upgraded to support DSPI and QSPI; an SDIO controller module is realized, an SDIO protocol is supported, pins are multiplexed with a USI CTRL module, input of various protocols is realized, and an FIFO module is added to optimize data transmission efficiency. According to the invention, the flexibility of the system and the compatibility with different peripherals are improved, and meanwhile, the reliability and the stability of the system are improv