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Altera_Forum
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9 years ago

Cyclone V HPS eMMC Physical Interface

I'm currently working on designing a new board with a Cyclone V HPS. I would like to use a 16GB eMMC device for storage of the application code, as well as the FPGA configuration. I am looking a...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

If I am not mistaken, the Data Strobe pin is added in in eMMC 5.0 specification for HS400 mode. However, the SD/MMC controller in Cyclone V only supports eMMC 4.41 and up to 25Mbps (yep, that's slow). In this case you should refer to the eMMC handbook to see if there is any mention on what to do when HS400 is not used.