I have not work with sd cards, but im interested... I just know that some sd cards doesnt support SPI mode, have you check this? If you have some sucess let us know.
Hi MDM .. Did u able to find out the issue with the sd card interface. I am new to PSoC and I am als o facing the same issue with the interface.
The SPI component in PSoC Creator has Slave Select Pin. This can be used to assert the Slave when Data is being written to it or when Data is read from it.
The MISO pin of SPI component should be unsynchronized. This can be done by unchecking the 'Input Synchronized' for the MISO pin of the SPI master.
Let us know if this helped in getting the SPI communication to work.