micro SD over SGPIO?

[lpcware]

Content originally posted in LPCWare by tomkulaga on Mon Jan 14 02:56:30 MST 2013
I was wondering if anyone has done it or if it is even feasible to create and micro Sd interface through the SGPIO on the lpc4330?

Tom

[lpcware]

Content originally posted in LPCWare by wmues on Mon Jan 14 03:42:15 MST 2013
MicroSD is the same interface as normal SD. No difference.

You can make an interface with SPI, or use the SD mode.

In SD mode, you will have to check for a leading "0" bit in the responses from the SD card (like a V24).
And: you will have to implement CRC. CRC is calculated per IO line. If you have a 4bit interface, you will need to calculate 4 CRC values.