Introduction - If you have any usage issues, please Google them yourself
In LPC2000, the document application of SDMMC card NXP was accessed through SPI, which was used for lpc2xxx series MCU. English document, easy to understand. Note sd/MMC card hardware specification, communication protocol specification, and reference code for reading and writing of SDMMC. The interface can be used in lpc21xx lpc22xx lpc23xx series. It can also be used as a reference for other cpus and SCM for spi interface.
Packet : 109201269accessing_sdmmc_card_using_spi_on_lpc2000.rar filelist
Accessing_SDMMC_card_using_SPI_on_LPC2000.pdf