Hello.
There is a problem with writing data to EMIF Flash. I've tested SDRAM, MRAM(non volatile) already, but nor flash is not working. There are 3 writing pulse in the scope when I write only one data. Those 3 pulse are in chip select pulse, it means there are valid writing. It makes problem, because the data pulse is appeared only one at same time with first writing pulse. After that signal, there are zero data pulses with other 2 writing pulses.
I think it is related DQM pins. I checked MRAM(EMIF 2) signals. There are 3 writing signals and CS is enabled at same time. But, DQM signals only enable at first signal. It controls the writing operation. There is no DQM pin my flash memory and operated in 16 bit mode.
I found a few report simillar with it other chips. It is related MPU and changing the type of region to 'STRONGLYORDERED' can solve this problem.. but it is not helpful to me. It cannot access the memory and goes to dataEntry when I change the type of flash memory region(0x6400_0000~0x64FF_FFFF) to STRONGLYORDERED.
Please give some helps..
