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Altera_Forum
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9 years ago

Cyclone V sdcard pull-up

Hi All According to Cyclone® V Device Family Pin Connection Guidelines - SDMMC_CMD and SDMMC_D0 should have 10k pull-ups but there is no mention of pull-ups for SDMMC_D1, SDMMC_D2, SDMMC_D3. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Thanks for answering. The reason I ask is that some of our custom boards fails in 4-bit mode, but works in 1-bit mode. Anyone have the same experience?