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Visitor gopal_123
Visitor
548 Views
Registered: ‎05-11-2018

Need a suggestion in selecting a micro SDIO card to Emulate SDIO host controller IP on Xilinx vcu118 kit

Hi All,

I want to test SDIO IP controller on xilinx vcu118 Emulation board with an Emulation peripheral daughter board ( on which there is micro SD slot to insert SDIO card)

For this, i need micro SDIO card. Can some one please suggest me a Micro SDIO card and where to get that?

 Thanks.

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3 Replies
Moderator
Moderator
453 Views
Registered: ‎11-28-2016

Re: Need a suggestion in selecting a micro SDIO card to Emulate SDIO host controller IP on Xilinx vcu118 kit

Hello @gopal_123,

SDIO is just an electrical interface standard, a slower and older one at that, for interfacing with the Secure Digital memory card format.  Most likely slower and less feature rich SDCards will be able to communicate over an SDIO interface.  You'll need to double check the clock rate, voltages, and basic setup/hold time parameters of the SDIO controller IP against the SDCard device data sheets.  There aren't many parameters so it should be rather quick.

Looking at the VC118 user guide in UG1124 it looks to be a standard 50MHz SD card interface from a Zynq-7000 device. However the SD card is used for the Zynq as part of the system controller. This isn't connected to the XCVU9P so you won't be able to communicate with it.

sd_card.PNG

Here's a link to the latest version of UG1224:
https://www.xilinx.com/support/documentation/boards_and_kits/vcu118/ug1224-vcu118-eval-bd.pdf

Visitor gopal_123
Visitor
373 Views
Registered: ‎05-11-2018

Re: Need a suggestion in selecting a micro SDIO card to Emulate SDIO host controller IP on Xilinx vcu118 kit

Thanks @ryana for your reply.

    Actually there is an micro SD slot on daughter board connecting externally to the xilinx board. We have successfully used this slot for Micro SD card(SanDisk) . Now we need to use same slot for SDIO card because interfacing SDIO or SD cards are electrically and mechanically identical. The problem is I'm not able to find suitable micro SDIO card (ex Wifi, Bluetooth or camera etc). Please suggest me a way to get micro SDIO card, I have tried in some online electronic stores/sites. But not able to get any. One more doubt does interfacing of SD or SDIO cards are electrically and mechanically identical implies that micro SDIO card can be inserted into an micro SD slot?

 

Thanks in advance.

 

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Moderator
Moderator
312 Views
Registered: ‎11-28-2016

Re: Need a suggestion in selecting a micro SDIO card to Emulate SDIO host controller IP on Xilinx vcu118 kit

Hello @gopal_123 ,

Electrically I believe they're all compatible at the lowest speed grades with 3.3V I/O.  My only concern would be if the latest and fastest parts will tolerate the I/O voltage in your design.  Mechanically I don't have the specs in front of me but I would cross check the mechanical specs from some card suppliers.  As for getting parts I wouldn't have any other suggestion than looking online since I'm not familiar with these particular devices.

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