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Altera_Forum's avatar
Altera_Forum
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10 years ago

SD card interface

Hi, I want to add a SD card reader to the hardware of a cyclone3. I have the JTAG/ISP SPI interface wired out. If the system is booted from flash, can I bolt a SD card reader to the programme...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

If you set these dual-purpose pins as "Use as regular I/O" in the Quartus project settings, you can use them like any other I/O pin.

The configuration file instructs the fpga to initialize them in the orrect way.

After this, is up to your design to control them for your specific purpose.