SDIO interface speed from SD card to AHB bus.
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‎2009-02-06 11:05 PM
Posted on February 07, 2009 at 08:05
SDIO interface speed from SD card to AHB bus.
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‎2011-05-17 3:54 AM
Posted on May 17, 2011 at 12:54
Hi, to all.
I have a problem, depends with SDIO interface speed, I'am use a SD card that may work at 6 MBytes per second in read mode, but I see that STM32F give me just a 512 Kbytes in a second. I use 24 MHz SDIO clock, 72 MHz core clock, 4 bit bus mode. In the manual wrote that this MCU can read very fast, but I didn't see it. I spend much time with this trouble. Anybody can tell me, about real speed of SDIO interface? Thank you. [ This message was edited by: vitaliy_sardyko on 27-11-2008 13:31 ]Options
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‎2011-05-17 3:54 AM
Posted on May 17, 2011 at 12:54
my test result are
DMA+4bitBus SDIO mode, use ReadMultiBlocks cmd 16 sectors/ReadMultiBlocks Cmd Speed=4.8 MBytes/sec SD card is 2G Kingston