Skip to main content
vitaliy_sardyko
Associate
February 7, 2009
Question

SDIO interface speed from SD card to AHB bus.

  • February 7, 2009
  • 2 replies
  • 786 views
Posted on February 07, 2009 at 08:05

SDIO interface speed from SD card to AHB bus.

    This topic has been closed for replies.

    2 replies

    seawwh
    Associate II
    May 17, 2011
    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
    Associate
    May 17, 2011
    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 ]