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LPC2478 MCI interface with SDHC

Kranthip32

Hi Everyone,

I am using MCB2470U LPC2478 evaluation board. i am trying to interface an 16 GB SDHC card using MCI mode but I am not getting any response from the SDHC card. But the code was working fine for old SD cards. I figured out that the code is only supports below 2.0 version SD cards and not supports for new version SD cards.

So, I am sending the commands which supports the higher version SD cards which are mentioned in flowchart in the SD 2.0 specification document. But still I am not getting any response from the card that I observed it in the Oscilloscope. 

Is the LPC2478 MCI peripheral supports newer version SD cards ? If supports how to proceed further.

Thank you in advance.

Regards

Kranthi