Hello everyone. The 100 pin package does not have all 32 pins of the buss on the Flexbus. I have a project with 8megs of external ram connected to the flex bus. The RAM chip has a 16 bit bus and I have a 16 bit latch on the lower 16 bits of the Flexbus.
As far as I can tell, the signals look OK for a write, but when I try to read, I get the latch signal, R/W signal, and CE signal, but not the OE signal. It always stays high. As far as I can tell, it was enabled by processor expert when I look at the PE code.
I also tried changing the OE pin to a generic IO pin and I am able to toggle the pin in software, so the pin is not shorted.
Anybody have any suggestions?