STM32H753 FMC: Can the SDRAM data bits be swapped within their byte lanes?

[chii_nw]

Looking for confirmation that the SDRAM data bits can be swapped within their byte lanes (D15..D8, D7..D0) to reduce the routing complexity. We are using vanilla SDRAM (non-DDR), specifically the ISSI IS42S32800G.

Thanks.

[Tesla DeLorean]

Yes I believe you could do that, you would need to apply the same bit swizzling to the configuration word(s) written to the memory IC.

[chii_nw]

Thanks for the quick reply. I believe the chip configuration (mode register) is written using the address pins alone, but would welcome any input on that as well.