sd card availibility

nowwalk 8 days ago

If you look at the auboard 15p schematic, you can see that there is no SD card connector. How can I connect the SD card to the auboard 15p? When I searched, there was no fmc board with an SD card connector, and there is one SD card connector board among the mikro click boards, but it can only be used in SPI mode (data 1 bit). I need an SD card connector that can be used in SDIO (data 4 bit) mode. Is there an SD card connector board that can be connected to the auboard 15p?

0 padudle 1 day ago

That board is non-Zynq so accessing an SD card will be difficult even if you had a slot on the board. If you really want an SD card you should consider any Zynq part. The processor side of that chip has hard IP and OS support to access a file system on the SD.
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0 nowwalk 13 hours ago in reply to padudle

Thank you for your opinion.

I am currently using artix-7 fpga with risc-v soft core and sdio soft ip. As I am currently developing a linux device driver for sdio soft ip, zync fpga with hard ip is not a target.

Since fpga boards with sd card connectors are common, it is sad that there is no sd card connector on the auboard 15p board.
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0 padudle 11 hours ago in reply to nowwalk

That's interesting. There have been times I wanted an SD card interface that would support a simple filesystem on a non-Zynq board.

The AUBoard 15P has a "Mikroe Click Board" expansion connector. I found this microSD click - Breakout board for microSD Card Slot from MIKROE.

I don't know if that supports the 4-bit data interface. (I don't think so.) In any case it would be easy to make a 4-bit version using KiCad.
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