Hi Everyone,
I'm planning to connect the H27U1G8F2B (datasheet) to a TMS570, it is controlled by a CFI state machine through 8 I/O pins, as the TMS570 does not have any native support for this I guess the best way to connect the device is the following:
EMIF_DATA[7-0] to I/O[7-0]
EMIF_nWE to WE
EMIF_nOE to RE
GPIO to CE,CLE and ALE
While R/B is connected back to a GPIO as well.
The use of GPIO will keep the CE pin asserted for the full read/write period while the nWE and nOE can function as normal, as long as the process and data written/read is handled correctly there should be no problem. Plus I believe this will be quicker than controlling the device purely by GPIOs.
Obviously this is going to be prototyped first but if there are any glaring errors in thought process please let me know!
Cheers,
Alan