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MCF52259 SD Card 4-Bit Mode?

Question asked by Marc Tapalla on Aug 23, 2010
Latest reply on Aug 30, 2010 by Petr MacHala

I have an SD card fully working with MFS using SPI, but for my application I want to attain the fastest speeds possible with my microSDHC card. So this brings up the question:

 

Is it possible using the MCF52259 to operate the SD card in the 4-bit SD mode?The 4-bit mode is significantly faster than the SPI mode. If it is possible, I am a bit confused as to which pins I would connect the DAT[3:0] and CMD lines of the SD card to.

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