SDIO interface speed from SD card to AHB bus.

[vitaliy_sardyko]

Posted on February 07, 2009 at 08:05

SDIO interface speed from SD card to AHB bus.

[seawwh]

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

[vitaliy_sardyko]

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 ]