PL-Side: DDR4 Component Memory

ZCU111 Evaluation Board User Guide (UG1271)

Document ID
Release Date
1.3 English

[This Figure, callout 3]

The 4 GB, 64-bit wide DDR4 memory system is comprised of four 512 Mb x 16 SDRAM, U80 and U94-U96.

Manufacturer: Micron              

Part Number: MT40A512M16JY-075E


°8 Gb (512 Mb x 16)               

°1.2V 96-ball TFBGA                   


The ZCU111 XCZU28DR RFSoC PL DDR interface performance is documented in the Zynq UltraScale+ RFSoC Data Sheet (DS926)[Ref 2].

This memory system is connected to PL-side XCZU28DR banks 67, 68, and 69. The DDR4 0.6V VTT termination voltage is supplied from sink-source regulator U81.

The ZCU111 board DDR4 64-bit component memory interface adheres to the constraints guidelines documented in the PCB guidelines for DDR4 section of UltraScale Architecture PCB Design User Guide (UG583) [Ref 4]. The ZCU111 DDR4 component interface is a 40Ω impedance implementation. Other memory interface details are also available in the UltraScale Architecture-Based FPGAs Memory IP LogiCORE IP Product Guide (PG150) [Ref 5]. For more details, see the Micron MTA4ATF51264HZ-2G6E1 data sheet at the Micron website [Ref 15]

The connections between the DDR4 component memories and the XCZU28DR banks are referenced in Xilinx Design Constraints.