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Altera_Forum
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20 years ago

uClinux MMC SPI Driver

Just to let everyone know, an MMC SPI Driver for Alteras SPI Core (modified) is in the works.. currently, cards can be recognized, read/write, and even partitioned.. but some bugs are being worked ou...
Altera_Forum's avatar
Altera_Forum
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20 years ago

hey hippo,

It's true that reflections are primarily caused by rise/fall times and SSO, but, clock frequency does affect it. If you are running RAM at 10M, reflections won't matter because they will have died down by the time data is sampled; running at 100M is different because the over/undershoot can be sampled instead of the stable data. So that's why I increase clock rates in testing.