We want to use the AEMIF module to do memory transfers. We have code that works fine on the TMS32DM368ZCE. We can write to the registers and get the expected results. The external chip select strobes when we read from the corresponding memory address. When we transfer the SD card (contains the code) to a TMS32DM368ZCEF chip we can only read 0x00000000's from the AEMIF configuration registers. On 3 seperate boards we replaced the non face detect chip that worked with external memory with the face detect version which doesn not seem to work with external memory. We are using the same SD card code in all of the systems. All other chip features work with the same except for the AEMIF interface.
We are able to use this exact code and it seems to work fine on a LeopardBoard. The Leopardboard has the -F chip on it. We cannot verify the chip select lines are strobing as they aren't broken out, but we can at least read and write to the registers.
All 3 boards were re-worked by taking off the non face detect chip and replacing it with the face detect chip. If it was a manufacturing issue we would have expected for some differences between the 3 re-worked boards, but they all exhibit the same problem and work the same way.
If anyone has any ideas as to what might be causing the problem please respond.
Thanks in advance!
