i experiment with the SDHC controller on the K60.
K60 runs with 100 MHz and SDHC controller with maximum speed (50MHz).
I am using a normal sd card (2gb) in 4 bit mode.
My file system is fatfs..
My max. write speed is 10240 Byte in ~ 59ms..
My max. read speed is 10240 Byte in ~12ms.. (withouf fs ~9ms)
That are about 173,5 kByte / s writing and
853,3 kByte / s reading ..
what are your values?
i can't believe that this is the maximum ..