66AK2G12: ECC DDR3 memory chip - physical placement (order) on a PCB

Hello,

We are planning to use 3 x  (x16) memory devices in our design (32bits +4ECC bits).

Is there any specific requirement for ECC memory physical placement on a PCB please (by means ordering)?

Is it OK to place ECC memory chip on a PCB as the firs device or as the last device on a fly by lines?

(I am not able to find any information about ECC memory device physical placement constrains (by means ordering) in a datasheet.)

Thank you.

Regards

Juraj