I have a new XMC-7A200, and an AXM-D01. I am trying to intergtae existing code from an SLX-150 onto thiscombination. I have instantiated a 1MB Block Ram which I mapped into the first 1M of what was DDR3 space, reduceing the DDR3 to 8M starting at the 8M boandary above it, figuring this would allow for the scatter-gather lists to be stored, although most of the DDR3 memory is now inaccessible.
I can read and write data to the card with DMA and CPU read / write.
Now Iam trying to connect signals to the AXM-D01 outputs, but I don't see any outputs on the pin with an oscilloscope.
When I run the example program, reflashing with 7A200_AXMD01.h and write 0xA5A5 to the digital port (selection 2) and 0xA5A5A5A5 to the differntial port (selection 22) I don't see an alternating 10101010 pattern as I switch between pins. Should a write to these ports leave them in a fixed state?
AM I doing something obviuosly wrong?
I am under the gun to get this completed and deliverd, of course, so any help would be appreciated.