cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
Contributor
Contributor
315 Views
Registered: ‎01-09-2018

DDR4 compatibility with US+ PS

Does anyone know if Micron MT40A2G8 (twin die) type 16Gb  or MT40A1G8 type 8Gb devices are compatible with the PS on the 7EV Us+ FPGAs?

Your DDR4 compatibility list looks like it is over 3 yrs old.  Is there a 2020 updated version somewhere?

 

1 Reply
Moderator
Moderator
218 Views
Registered: ‎06-29-2011

Hi @bmoore 

Please note that Xilinx is JEDEC compliant and supports JEDEC compliant memory variants that conforms to the memory controller conditions that are details in UG1085 for PS DDRC and PG150 for MIG. For PS this is seen in Table 17-1 on 426 in Chapter 17. The list in the GUI's has no bearing on support but is there for customer convenience. The parts in the list are selected based on marketing decisions with regard to market trends and discussions with Micron.

 

So some memory device parts may not be listed or some parts may be listed that have become obsolete and have new recommended parts from Micron and this list not been updated. In this case you should use the custom part option to manually add the desired part and ensure all settings are inputted correctly by referencing the memory device datasheet and JEDEC specification.

 

PG201 Chapter 5 details an example using DDR3 for how to read the datasheet and populating the correct values in the PS DDR GUI. PG201 can be found in Doc Nav or at the following link.

https://www.xilinx.com/support/documentation/ip_documentation/zynq_ultra_ps_e/v3_3/pg201-zynq-ultrascale-plus-processing-system.pdf

 

-------------------------------------------------------------------------
Don’t forget to reply, kudo, and accept as solution.
-------------------------------------------------------------------------

Kind regards,
Gareth