AnsweredAssumed Answered

sdio initialization

Question asked by sam.sam on May 19, 2012
Latest reply on May 21, 2012 by sam.sam
Hello,
I am trying to use the SD card which is connected via SDIO interface. I am using STM3221G-EVAL evaluation board.

Problem is response of ACMD41 comes with a crc error. I have seen in errata that crc will be detected by SDIO host but even the response command and response1 registers holds weird values. Also if i ignore it and give command 2, i get the same response 
RESPCMD = 0x3f,   RESP1 = 0xff8000, 


order of initialization
pll
nvic,
lcd,
i2c
ethernet,
sdio

i get correct response of command 0 and command 55

Please help, I am stuck on it for quite some time now.
thanks

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