We use a external flash and a external SRAM on our own board.
We use the 16-bit bus mode and DATA[16:31] signals.
CS0: 0x20000000 --- 0x20FFFFFF
CS1: 0x21000000 ---- 0x203FFFFF
I make test code as the attachment file, it can't write data to external SRAM and the CS1 have no action.
I don't know if the configuration is right.
Hi, I count point out following example code where you can see how to configure external SRAM. Unfortunatelly it is written for different device, so you will have to port it to MPC5777M. As MPC5777MEVB does not have external SRAM installed on the board, I don't see a need of such example. I believe MPC5777C example could be useful as EBI module is almost the same.
Example MPC5777C External SRAM_test GHS714