VCU pl-ddr ddr4 controller supported memory parts on zcu104

[mksafavi]

VCU pg252 doc(v1.2) states that the following sodimm memory parts are supported by vcu ddr4 controller in page 117:

X8 (KVR21SE15S8/4)

X16 (MTA4ATF51264HZ-2G6)

and in page 114 :

"RAM bus width selection- can be x8 (zcu104 evaluation board) or x16 (zcu106 evaluation board)"

based on this info, correct me if I'm wrong, it's only possible to use kingstone KVR21SE15S8/4 model on zcu104.

can this parts be substituted with another memory with the same configuration?

in our current setup we use a 8GB hynix-2133 module(512x16) which has the same configuration as MTA4ATF51264HZ-2G6 . but during boot time it freezes when trying to probe vcu decoder.

[watari]

Hi @mksafavi 

Did you refer the following AR ?

https://www.xilinx.com/support/answers/69403.html

And, did you make sure CL, tRCD and tRP on Hynix's memory module ?

Also, did you make sure number of die on a memory chip ?

I guess some parameters are different between certified Micron's module and your current module.

I suggest you to make sure what I point out.

Best regards,

[mksafavi · Accepted solution]

thanks for your reply.

seems like any 4GB 1Rx8 2133 CL 15 ram should work on ZCU104.

we are using hynix HMA451S6AFR8N now and it works fine:

mksafavi [at] avanco.tech