Hi,
I have an asynchronous flash memory connected to the TMS570LS1227 on CE2. When I try to read addresses beyond 32kB (0x60008000) data abort is generated and CE line is not being toggled. When I try to write them, also CE line is not being toggled (but no data abort). Addresses below work fine.
Looking on datasheet of the TMS570LS1227 ( http://www.ti.com/lit/ds/symlink/tms570ls1227.pdf ) page 72 Memory Map I can see, that actual frame size for EMIF Chip Select 2 is 32kB. But the same datasheet on page 86 says that EMIF can work support “3 addressable chip select for asynchronous memories of up to 16MB each”
Moreover the “TMS570LS12x/11x 16/32-Bit RISC Flash Microcontroller Technical Reference Manual” (http://www.ti.com/lit/ug/spnu515a/spnu515a.pdf) on page 107 specifies actual frame size for EMIF Chip Select 2 to be 16MB.
So is EMIF on TMS570LS1227 able to access more than 32kB? I would guess so, because it has exactly enough address lines to access 16MB. If so, could you please have a look on my code and see what I might have been doing wrong.
Many thanks,
