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Altera_Forum's avatar
Altera_Forum
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20 years ago

Questions about CompactFlash Interface

I downloaded "Compact Flash support for Nios II 5.0" on niosforum website and tried it. But I found it's data transfer rate (read operation) is only 300~400KB/s on my cyclone ep1c20 evaluation bo...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

I just looked at the CF spec on CompactFlash.org and compared it to the class.ptf file made some adjustments to the timing in the class.ptf file but I really didn’t see any major improvements http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/sad.gif what are the Altera recommended timings to run the CF in PIO mode 2 and 3?

Also is there something else in the NIOS that would cause long write time?

Thanks

Steve