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Altera_Forum
Honored Contributor
Honored ContributorSD card access
Is there some resource (eg datasheet) describing how to access an SD card from my DE2-115 board? The manual mentions using custom controllers to access the card in "SPI mode and SD Card 4-bit ...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- The manual mentions using custom controllers to access the card in "SPI mode and SD Card 4-bit or 1-bit mode". What is meant by these? --- Quote End --- "Custom" in this sense means they don't supply the controller. You either design it yourself, or purchase Intellectual Property (IP) from one of the vendors such as SLS, Cast, Eureka, or El Camino that has developed it. Terasic may have one that they recommend. If you're referring to the modes, those are standard means of communicating with SD cards. See here (http://en.wikipedia.org/wiki/secure_digital#transfer_modes).
