SD Card Interface Using FPGA for Multimedia Applications

Field Programmable Gate Array (FPGA) is an application that is based on chips that can process audio, video, and image. For FPGA systems, onboard memory may be used; however, it cannot be readily expanded by putting in extra cards. Since microcontrollers can read and write Secure Digital (SD) cards, they are more useful. The primary goal is to develop a low-cost, non-volatile, flash-memory, detachable, portable, and user-friendly storage solution for Field Programmable Gate Array (FPGA) that can store vast quantities of data. Verilog enables complete access to the SD card's contents, eliminating the need for a microcontroller or general-purpose CPU on-chip. In this work, Spartan 6 and Artix-7 FPGA are utilized. For this, the proposed study utilizes a Strontium 4GB micro SDHC (class 6) card. The SD card stores files in the FAT32 format. The objective is to extract a BMP image file from an SD card. The proposed design has achieved the hardware resources in 916 look-up tables (LUT) and 464 flip-flops.